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Name	Size	Permission
amba	[ DIR ]	drwxr-xr-x
avf	[ DIR ]	drwxr-xr-x
bcma	[ DIR ]	drwxr-xr-x
byteorder	[ DIR ]	drwxr-xr-x
can	[ DIR ]	drwxr-xr-x
ceph	[ DIR ]	drwxr-xr-x
clk	[ DIR ]	drwxr-xr-x
crush	[ DIR ]	drwxr-xr-x
decompress	[ DIR ]	drwxr-xr-x
dma	[ DIR ]	drwxr-xr-x
dsa	[ DIR ]	drwxr-xr-x
extcon	[ DIR ]	drwxr-xr-x
firmware	[ DIR ]	drwxr-xr-x
fpga	[ DIR ]	drwxr-xr-x
fsl	[ DIR ]	drwxr-xr-x
gpio	[ DIR ]	drwxr-xr-x
greybus	[ DIR ]	drwxr-xr-x
hsi	[ DIR ]	drwxr-xr-x
i3c	[ DIR ]	drwxr-xr-x
iio	[ DIR ]	drwxr-xr-x
input	[ DIR ]	drwxr-xr-x
irqchip	[ DIR ]	drwxr-xr-x
isdn	[ DIR ]	drwxr-xr-x
lockd	[ DIR ]	drwxr-xr-x
mailbox	[ DIR ]	drwxr-xr-x
mdio	[ DIR ]	drwxr-xr-x
mfd	[ DIR ]	drwxr-xr-x
mlx4	[ DIR ]	drwxr-xr-x
mlx5	[ DIR ]	drwxr-xr-x
mmc	[ DIR ]	drwxr-xr-x
mtd	[ DIR ]	drwxr-xr-x
mux	[ DIR ]	drwxr-xr-x
netfilter	[ DIR ]	drwxr-xr-x
netfilter_arp	[ DIR ]	drwxr-xr-x
netfilter_bridge	[ DIR ]	drwxr-xr-x
netfilter_ipv4	[ DIR ]	drwxr-xr-x
netfilter_ipv6	[ DIR ]	drwxr-xr-x
perf	[ DIR ]	drwxr-xr-x
phy	[ DIR ]	drwxr-xr-x
pinctrl	[ DIR ]	drwxr-xr-x
platform_data	[ DIR ]	drwxr-xr-x
power	[ DIR ]	drwxr-xr-x
qed	[ DIR ]	drwxr-xr-x
raid	[ DIR ]	drwxr-xr-x
regulator	[ DIR ]	drwxr-xr-x
remoteproc	[ DIR ]	drwxr-xr-x
reset	[ DIR ]	drwxr-xr-x
rpmsg	[ DIR ]	drwxr-xr-x
rtc	[ DIR ]	drwxr-xr-x
sched	[ DIR ]	drwxr-xr-x
soc	[ DIR ]	drwxr-xr-x
soundwire	[ DIR ]	drwxr-xr-x
spi	[ DIR ]	drwxr-xr-x
ssb	[ DIR ]	drwxr-xr-x
sunrpc	[ DIR ]	drwxr-xr-x
ulpi	[ DIR ]	drwxr-xr-x
unaligned	[ DIR ]	drwxr-xr-x
usb	[ DIR ]	drwxr-xr-x
wimax	[ DIR ]	drwxr-xr-x
8250_pci.h	1.01 KB	-rw-r--r--
a.out.h	354 B	-rw-r--r--
acct.h	2.49 KB	-rw-r--r--
acpi.h	37.08 KB	-rw-r--r--
acpi_dma.h	3.08 KB	-rw-r--r--
acpi_iort.h	2.22 KB	-rw-r--r--
acpi_pmtmr.h	674 B	-rw-r--r--
adb.h	1.79 KB	-rw-r--r--
adfs_fs.h	574 B	-rw-r--r--
adxl.h	310 B	-rw-r--r--
aer.h	1.73 KB	-rw-r--r--
agp_backend.h	3.45 KB	-rw-r--r--
agpgart.h	3.82 KB	-rw-r--r--
ahci-remap.h	607 B	-rw-r--r--
ahci_platform.h	1.54 KB	-rw-r--r--
aio.h	651 B	-rw-r--r--
alarmtimer.h	1.83 KB	-rw-r--r--
alcor_pci.h	8.8 KB	-rw-r--r--
altera_jtaguart.h	379 B	-rw-r--r--
altera_uart.h	397 B	-rw-r--r--
amd-iommu.h	6.45 KB	-rw-r--r--
anon_inodes.h	494 B	-rw-r--r--
apm-emulation.h	1.56 KB	-rw-r--r--
apm_bios.h	2.25 KB	-rw-r--r--
apple-gmux.h	918 B	-rw-r--r--
apple_bl.h	498 B	-rw-r--r--
arch_topology.h	1.64 KB	-rw-r--r--
arm-cci.h	1.36 KB	-rw-r--r--
arm-smccc.h	12.39 KB	-rw-r--r--
arm_sdei.h	2.59 KB	-rw-r--r--
armada-37xx-rwtm-mailbox.h	432 B	-rw-r--r--
ascii85.h	532 B	-rw-r--r--
asn1.h	1.79 KB	-rw-r--r--
asn1_ber_bytecode.h	2.52 KB	-rw-r--r--
asn1_decoder.h	468 B	-rw-r--r--
assoc_array.h	2.88 KB	-rw-r--r--
assoc_array_priv.h	5.3 KB	-rw-r--r--
async.h	4.39 KB	-rw-r--r--
async_tx.h	6.21 KB	-rw-r--r--
ata.h	32.95 KB	-rw-r--r--
ata_platform.h	749 B	-rw-r--r--
atalk.h	4.48 KB	-rw-r--r--
ath9k_platform.h	1.44 KB	-rw-r--r--
atm.h	287 B	-rw-r--r--
atm_suni.h	253 B	-rw-r--r--
atm_tcp.h	511 B	-rw-r--r--
atmdev.h	10.21 KB	-rw-r--r--
atmel-mci.h	1.4 KB	-rw-r--r--
atmel-ssc.h	9.74 KB	-rw-r--r--
atmel_pdc.h	1.26 KB	-rw-r--r--
atomic-fallback.h	52.3 KB	-rw-r--r--
atomic.h	2.2 KB	-rw-r--r--
attribute_container.h	2.47 KB	-rw-r--r--
audit.h	18.23 KB	-rw-r--r--
auto_dev-ioctl.h	296 B	-rw-r--r--
auto_fs.h	278 B	-rw-r--r--
auxvec.h	304 B	-rw-r--r--
average.h	2.42 KB	-rw-r--r--
b1pcmcia.h	666 B	-rw-r--r--
backing-dev-defs.h	9.33 KB	-rw-r--r--
backing-dev.h	13.92 KB	-rw-r--r--
backlight.h	6.37 KB	-rw-r--r--
badblocks.h	2.14 KB	-rw-r--r--
balloon_compaction.h	6.59 KB	-rw-r--r--
bcd.h	559 B	-rw-r--r--
bch.h	2 KB	-rw-r--r--
bcm47xx_nvram.h	1.01 KB	-rw-r--r--
bcm47xx_sprom.h	386 B	-rw-r--r--
bcm47xx_wdt.h	555 B	-rw-r--r--
bcm963xx_nvram.h	2.96 KB	-rw-r--r--
bcm963xx_tag.h	3.6 KB	-rw-r--r--
binfmts.h	5.15 KB	-rw-r--r--
bio.h	20.71 KB	-rw-r--r--
bit_spinlock.h	2.3 KB	-rw-r--r--
bitfield.h	4.89 KB	-rw-r--r--
bitmap.h	18.76 KB	-rw-r--r--
bitops.h	6.99 KB	-rw-r--r--
bitrev.h	2.53 KB	-rw-r--r--
bits.h	883 B	-rw-r--r--
blk-cgroup.h	25.69 KB	-rw-r--r--
blk-mq-pci.h	269 B	-rw-r--r--
blk-mq-rdma.h	273 B	-rw-r--r--
blk-mq-virtio.h	293 B	-rw-r--r--
blk-mq.h	11.4 KB	-rw-r--r--
blk-pm.h	717 B	-rw-r--r--
blk_types.h	13.13 KB	-rw-r--r--
blkdev.h	52.41 KB	-rw-r--r--
blkpg.h	436 B	-rw-r--r--
blktrace_api.h	3.87 KB	-rw-r--r--
blockgroup_lock.h	810 B	-rw-r--r--
bma150.h	1.26 KB	-rw-r--r--
bottom_half.h	803 B	-rw-r--r--
bpf-cgroup.h	13.81 KB	-rw-r--r--
bpf.h	36.68 KB	-rw-r--r--
bpf_lirc.h	698 B	-rw-r--r--
bpf_trace.h	166 B	-rw-r--r--
bpf_types.h	3.15 KB	-rw-r--r--
bpf_verifier.h	15.18 KB	-rw-r--r--
bpfilter.h	728 B	-rw-r--r--
brcmphy.h	10.8 KB	-rw-r--r--
bsearch.h	275 B	-rw-r--r--
bsg-lib.h	1.7 KB	-rw-r--r--
bsg.h	1012 B	-rw-r--r--
btf.h	2.32 KB	-rw-r--r--
btree-128.h	2.67 KB	-rw-r--r--
btree-type.h	3.9 KB	-rw-r--r--
btree.h	6.83 KB	-rw-r--r--
btrfs.h	145 B	-rw-r--r--
buffer_head.h	14.4 KB	-rw-r--r--
bug.h	1.92 KB	-rw-r--r--
build-salt.h	375 B	-rw-r--r--
build_bug.h	2.86 KB	-rw-r--r--
bvec.h	4.72 KB	-rw-r--r--
c2port.h	1.35 KB	-rw-r--r--
cache.h	2.13 KB	-rw-r--r--
cacheinfo.h	3.32 KB	-rw-r--r--
capability.h	7.79 KB	-rw-r--r--
cb710.h	5.36 KB	-rw-r--r--
cciss_ioctl.h	1.03 KB	-rw-r--r--
ccp.h	18.12 KB	-rw-r--r--
cdev.h	845 B	-rw-r--r--
cdrom.h	8.78 KB	-rw-r--r--
cfag12864b.h	1.46 KB	-rw-r--r--
cgroup-defs.h	26.87 KB	-rw-r--r--
cgroup.h	28.89 KB	-rw-r--r--
cgroup_rdma.h	1.18 KB	-rw-r--r--
cgroup_subsys.h	1.17 KB	-rw-r--r--
circ_buf.h	1.09 KB	-rw-r--r--
cleancache.h	3.89 KB	-rw-r--r--
clk-provider.h	40.26 KB	-rw-r--r--
clk.h	31.76 KB	-rw-r--r--
clkdev.h	1.52 KB	-rw-r--r--
clock_cooling.h	1.65 KB	-rw-r--r--
clockchips.h	7.27 KB	-rw-r--r--
clocksource.h	8.56 KB	-rw-r--r--
cm4000_cs.h	199 B	-rw-r--r--
cma.h	1.18 KB	-rw-r--r--
cmdline-parser.h	1.21 KB	-rw-r--r--
cn_proc.h	1.85 KB	-rw-r--r--
cnt32_to_63.h	3.46 KB	-rw-r--r--
coda.h	2.16 KB	-rw-r--r--
compaction.h	7.33 KB	-rw-r--r--
compat.h	31.51 KB	-rw-r--r--
compiler-clang.h	1.35 KB	-rw-r--r--
compiler-gcc.h	4.9 KB	-rw-r--r--
compiler-intel.h	949 B	-rw-r--r--
compiler.h	13.4 KB	-rw-r--r--
compiler_attributes.h	11.54 KB	-rw-r--r--
compiler_types.h	7.44 KB	-rw-r--r--
completion.h	4.05 KB	-rw-r--r--
component.h	4.07 KB	-rw-r--r--
configfs.h	8.56 KB	-rw-r--r--
connector.h	3.8 KB	-rw-r--r--
console.h	7.45 KB	-rw-r--r--
console_struct.h	6.79 KB	-rw-r--r--
consolemap.h	1.04 KB	-rw-r--r--
const.h	157 B	-rw-r--r--
container.h	610 B	-rw-r--r--
context_tracking.h	4.43 KB	-rw-r--r--
context_tracking_state.h	1.39 KB	-rw-r--r--
cordic.h	2.08 KB	-rw-r--r--
coredump.h	797 B	-rw-r--r--
coresight-pmu.h	989 B	-rw-r--r--
coresight-stm.h	152 B	-rw-r--r--
coresight.h	10.2 KB	-rw-r--r--
count_zeros.h	1.42 KB	-rw-r--r--
counter.h	16.86 KB	-rw-r--r--
counter_enum.h	1.43 KB	-rw-r--r--
cper.h	15.64 KB	-rw-r--r--
cpu.h	7.63 KB	-rw-r--r--
cpu_cooling.h	1.72 KB	-rw-r--r--
cpu_pm.h	2.38 KB	-rw-r--r--
cpu_rmap.h	1.68 KB	-rw-r--r--
cpufeature.h	1.71 KB	-rw-r--r--
cpufreq.h	30.02 KB	-rw-r--r--
cpuhotplug.h	12.32 KB	-rw-r--r--
cpuidle.h	9.81 KB	-rw-r--r--
cpuidle_haltpoll.h	312 B	-rw-r--r--
cpumask.h	26.34 KB	-rw-r--r--
cpuset.h	7.29 KB	-rw-r--r--
crash_core.h	3.06 KB	-rw-r--r--
crash_dump.h	4.02 KB	-rw-r--r--
crc-ccitt.h	609 B	-rw-r--r--
crc-itu-t.h	531 B	-rw-r--r--
crc-t10dif.h	453 B	-rw-r--r--
crc16.h	540 B	-rw-r--r--
crc32.h	2.83 KB	-rw-r--r--
crc32c.h	331 B	-rw-r--r--
crc32poly.h	610 B	-rw-r--r--
crc4.h	192 B	-rw-r--r--
crc64.h	280 B	-rw-r--r--
crc7.h	316 B	-rw-r--r--
crc8.h	3.65 KB	-rw-r--r--
cred.h	12.34 KB	-rw-r--r--
crypto.h	63.01 KB	-rw-r--r--
cryptohash.h	319 B	-rw-r--r--
cs5535.h	6.13 KB	-rw-r--r--
ctype.h	1.75 KB	-rw-r--r--
cuda.h	613 B	-rw-r--r--
cyclades.h	10.36 KB	-rw-r--r--
davinci_emac.h	1.05 KB	-rw-r--r--
dax.h	7.21 KB	-rw-r--r--
dca.h	1.88 KB	-rw-r--r--
dcache.h	18.32 KB	-rw-r--r--
dccp.h	10.73 KB	-rw-r--r--
dcookies.h	1.3 KB	-rw-r--r--
debug_locks.h	1.54 KB	-rw-r--r--
debugfs.h	11.28 KB	-rw-r--r--
debugobjects.h	3.89 KB	-rw-r--r--
delay.h	1.88 KB	-rw-r--r--
delayacct.h	5.26 KB	-rw-r--r--
delayed_call.h	709 B	-rw-r--r--
devcoredump.h	2.21 KB	-rw-r--r--
devfreq-event.h	5.82 KB	-rw-r--r--
devfreq.h	13.06 KB	-rw-r--r--
devfreq_cooling.h	3.54 KB	-rw-r--r--
device-mapper.h	17.45 KB	-rw-r--r--
device.h	67.82 KB	-rw-r--r--
device_cgroup.h	1.86 KB	-rw-r--r--
devpts_fs.h	1.13 KB	-rw-r--r--
digsig.h	1.19 KB	-rw-r--r--
dim.h	8.81 KB	-rw-r--r--
dio.h	10.97 KB	-rw-r--r--
dirent.h	216 B	-rw-r--r--
dlm.h	5.86 KB	-rw-r--r--
dlm_plock.h	532 B	-rw-r--r--
dm-bufio.h	4.51 KB	-rw-r--r--
dm-dirty-log.h	3.94 KB	-rw-r--r--
dm-io.h	1.93 KB	-rw-r--r--
dm-kcopyd.h	2.89 KB	-rw-r--r--
dm-region-hash.h	3.11 KB	-rw-r--r--
dm9000.h	987 B	-rw-r--r--
dma-buf.h	14.57 KB	-rw-r--r--
dma-contiguous.h	4.73 KB	-rw-r--r--
dma-debug.h	4.18 KB	-rw-r--r--
dma-direct.h	2.69 KB	-rw-r--r--
dma-direction.h	220 B	-rw-r--r--
dma-fence-array.h	2.14 KB	-rw-r--r--
dma-fence-chain.h	2.04 KB	-rw-r--r--
dma-fence.h	19.71 KB	-rw-r--r--
dma-iommu.h	1.94 KB	-rw-r--r--
dma-mapping.h	29.05 KB	-rw-r--r--
dma-noncoherent.h	3.36 KB	-rw-r--r--
dma-resv.h	9.16 KB	-rw-r--r--
dmaengine.h	45.86 KB	-rw-r--r--
dmapool.h	1.79 KB	-rw-r--r--
dmar.h	7.5 KB	-rw-r--r--
dmi.h	4.07 KB	-rw-r--r--
dnotify.h	1.02 KB	-rw-r--r--
dns_resolver.h	1.36 KB	-rw-r--r--
dqblk_qtree.h	2.19 KB	-rw-r--r--
dqblk_v1.h	327 B	-rw-r--r--
dqblk_v2.h	406 B	-rw-r--r--
drbd.h	10.07 KB	-rw-r--r--
drbd_genl.h	21.49 KB	-rw-r--r--
drbd_genl_api.h	1.77 KB	-rw-r--r--
drbd_limits.h	7.82 KB	-rw-r--r--
ds2782_battery.h	158 B	-rw-r--r--
dtlk.h	3.5 KB	-rw-r--r--
dw_apb_timer.h	1.56 KB	-rw-r--r--
dynamic_debug.h	6.06 KB	-rw-r--r--
dynamic_queue_limits.h	3.7 KB	-rw-r--r--
earlycpio.h	359 B	-rw-r--r--
ecryptfs.h	3.82 KB	-rw-r--r--
edac.h	20.33 KB	-rw-r--r--
edd.h	1.05 KB	-rw-r--r--
eeprom_93cx6.h	2.31 KB	-rw-r--r--
eeprom_93xx46.h	879 B	-rw-r--r--
efi-bgrt.h	644 B	-rw-r--r--
efi.h	53.96 KB	-rw-r--r--
efs_vh.h	1.55 KB	-rw-r--r--
eisa.h	2.96 KB	-rw-r--r--
elevator.h	5.37 KB	-rw-r--r--
elf-fdpic.h	1.98 KB	-rw-r--r--
elf-randomize.h	583 B	-rw-r--r--
elf.h	1.53 KB	-rw-r--r--
elfcore-compat.h	1.23 KB	-rw-r--r--
elfcore.h	2.52 KB	-rw-r--r--
elfnote.h	3.54 KB	-rw-r--r--
enclosure.h	4.02 KB	-rw-r--r--
energy_model.h	6.47 KB	-rw-r--r--
err.h	1.55 KB	-rw-r--r--
errno.h	1.39 KB	-rw-r--r--
error-injection.h	607 B	-rw-r--r--
errqueue.h	524 B	-rw-r--r--
errseq.h	382 B	-rw-r--r--
etherdevice.h	16.97 KB	-rw-r--r--
ethtool.h	17.89 KB	-rw-r--r--
eventfd.h	2.12 KB	-rw-r--r--
eventpoll.h	1.95 KB	-rw-r--r--
evm.h	2.65 KB	-rw-r--r--
export.h	6.16 KB	-rw-r--r--
exportfs.h	7.46 KB	-rw-r--r--
ext2_fs.h	967 B	-rw-r--r--
extable.h	1.06 KB	-rw-r--r--
extcon-provider.h	3.92 KB	-rw-r--r--
extcon.h	10.18 KB	-rw-r--r--
f2fs_fs.h	18.66 KB	-rw-r--r--
f75375s.h	541 B	-rw-r--r--
falloc.h	792 B	-rw-r--r--
fanotify.h	2.66 KB	-rw-r--r--
fault-inject.h	1.93 KB	-rw-r--r--
fb.h	27.82 KB	-rw-r--r--
fbcon.h	2.09 KB	-rw-r--r--
fcdevice.h	774 B	-rw-r--r--
fcntl.h	1.29 KB	-rw-r--r--
fd.h	490 B	-rw-r--r--
fddidevice.h	833 B	-rw-r--r--
fdtable.h	3.34 KB	-rw-r--r--
fec.h	463 B	-rw-r--r--
file.h	2.24 KB	-rw-r--r--
filter.h	33.82 KB	-rw-r--r--
fips.h	303 B	-rw-r--r--
firewire.h	13.4 KB	-rw-r--r--
firmware-map.h	959 B	-rw-r--r--
firmware.h	2.66 KB	-rw-r--r--
fixp-arith.h	3.76 KB	-rw-r--r--
flat.h	2.57 KB	-rw-r--r--
flex_proportions.h	2.81 KB	-rw-r--r--
font.h	1.6 KB	-rw-r--r--
frame.h	1.12 KB	-rw-r--r--
freezer.h	8.67 KB	-rw-r--r--
frontswap.h	3.05 KB	-rw-r--r--
fs.h	118.49 KB	-rw-r--r--
fs_context.h	7.8 KB	-rw-r--r--
fs_enet_pd.h	3.38 KB	-rw-r--r--
fs_parser.h	4.6 KB	-rw-r--r--
fs_pin.h	539 B	-rw-r--r--
fs_stack.h	811 B	-rw-r--r--
fs_struct.h	1.03 KB	-rw-r--r--
fs_types.h	2.02 KB	-rw-r--r--
fs_uart_pd.h	1.49 KB	-rw-r--r--
fscache-cache.h	18.6 KB	-rw-r--r--
fscache.h	28.68 KB	-rw-r--r--
fscrypt.h	25.72 KB	-rw-r--r--
fsi-occ.h	681 B	-rw-r--r--
fsi-sbefifo.h	629 B	-rw-r--r--
fsi.h	2.26 KB	-rw-r--r--
fsl-diu-fb.h	3.87 KB	-rw-r--r--
fsl_devices.h	4.16 KB	-rw-r--r--
fsl_hypervisor.h	2.76 KB	-rw-r--r--
fsl_ifc.h	24.48 KB	-rw-r--r--
fsldma.h	202 B	-rw-r--r--
fsnotify.h	9.45 KB	-rw-r--r--
fsnotify_backend.h	20.3 KB	-rw-r--r--
fsverity.h	5.97 KB	-rw-r--r--
ftrace.h	30.13 KB	-rw-r--r--
ftrace_irq.h	823 B	-rw-r--r--
futex.h	2.44 KB	-rw-r--r--
fwnode.h	4.42 KB	-rw-r--r--
gameport.h	5.42 KB	-rw-r--r--
gcd.h	193 B	-rw-r--r--
genalloc.h	7.67 KB	-rw-r--r--
generic-radix-tree.h	6.36 KB	-rw-r--r--
genetlink.h	1.35 KB	-rw-r--r--
genhd.h	24.04 KB	-rw-r--r--
genl_magic_func.h	11.59 KB	-rw-r--r--
genl_magic_struct.h	7.66 KB	-rw-r--r--
getcpu.h	641 B	-rw-r--r--
gfp.h	23.94 KB	-rw-r--r--
glob.h	256 B	-rw-r--r--
gnss.h	1.56 KB	-rw-r--r--
goldfish.h	738 B	-rw-r--r--
gpio-pxa.h	571 B	-rw-r--r--
gpio.h	5.35 KB	-rw-r--r--
gpio_keys.h	1.74 KB	-rw-r--r--
greybus.h	4.14 KB	-rw-r--r--
hardirq.h	1.95 KB	-rw-r--r--
hash.h	3 KB	-rw-r--r--
hashtable.h	6.63 KB	-rw-r--r--
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hdlcdrv.h	6.32 KB	-rw-r--r--
hdmi.h	12.26 KB	-rw-r--r--
hid-debug.h	1.42 KB	-rw-r--r--
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hid-sensor-hub.h	8.64 KB	-rw-r--r--
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hid.h	36.89 KB	-rw-r--r--
hiddev.h	1.42 KB	-rw-r--r--
hidraw.h	1.12 KB	-rw-r--r--
highmem.h	6.77 KB	-rw-r--r--
highuid.h	3.12 KB	-rw-r--r--
hil.h	18.42 KB	-rw-r--r--
hil_mlc.h	5.13 KB	-rw-r--r--
hippidevice.h	1.03 KB	-rw-r--r--
hmm.h	14.21 KB	-rw-r--r--
host1x.h	8.22 KB	-rw-r--r--
hp_sdc.h	14.02 KB	-rw-r--r--
hpet.h	2.55 KB	-rw-r--r--
hrtimer.h	15.93 KB	-rw-r--r--
hrtimer_defs.h	660 B	-rw-r--r--
htcpld.h	617 B	-rw-r--r--
huge_mm.h	12.06 KB	-rw-r--r--
hugetlb.h	19.64 KB	-rw-r--r--
hugetlb_cgroup.h	2.93 KB	-rw-r--r--
hugetlb_inline.h	374 B	-rw-r--r--
hw_breakpoint.h	4.1 KB	-rw-r--r--
hw_random.h	2.12 KB	-rw-r--r--
hwmon-sysfs.h	2.77 KB	-rw-r--r--
hwmon-vid.h	862 B	-rw-r--r--
hwmon.h	13.31 KB	-rw-r--r--
hwspinlock.h	15.64 KB	-rw-r--r--
hyperv.h	42.44 KB	-rw-r--r--
hypervisor.h	608 B	-rw-r--r--
i2c-algo-bit.h	1.4 KB	-rw-r--r--
i2c-algo-pca.h	2.89 KB	-rw-r--r--
i2c-algo-pcf.h	1.21 KB	-rw-r--r--
i2c-dev.h	371 B	-rw-r--r--
i2c-mux.h	1.63 KB	-rw-r--r--
i2c-pxa.h	438 B	-rw-r--r--
i2c-smbus.h	1.29 KB	-rw-r--r--
i2c.h	36.54 KB	-rw-r--r--
i8042.h	1.99 KB	-rw-r--r--
i8253.h	809 B	-rw-r--r--
icmp.h	652 B	-rw-r--r--
icmpv6.h	2.5 KB	-rw-r--r--
ide.h	46.21 KB	-rw-r--r--
idle_inject.h	832 B	-rw-r--r--
idr.h	9.39 KB	-rw-r--r--
ieee80211.h	107.09 KB	-rw-r--r--
ieee802154.h	11.12 KB	-rw-r--r--
if_arp.h	1.81 KB	-rw-r--r--
if_bridge.h	3.72 KB	-rw-r--r--
if_eql.h	1.07 KB	-rw-r--r--
if_ether.h	1.26 KB	-rw-r--r--
if_fddi.h	3.24 KB	-rw-r--r--
if_frad.h	2.66 KB	-rw-r--r--
if_link.h	592 B	-rw-r--r--
if_ltalk.h	188 B	-rw-r--r--
if_macvlan.h	2.67 KB	-rw-r--r--
if_phonet.h	319 B	-rw-r--r--
if_pppol2tp.h	516 B	-rw-r--r--
if_pppox.h	2.84 KB	-rw-r--r--
if_rmnet.h	1.14 KB	-rw-r--r--
if_tap.h	2.21 KB	-rw-r--r--
if_team.h	7.94 KB	-rw-r--r--
if_tun.h	1.29 KB	-rw-r--r--
if_tunnel.h	409 B	-rw-r--r--
if_vlan.h	20.73 KB	-rw-r--r--
igmp.h	4.44 KB	-rw-r--r--
ihex.h	2.16 KB	-rw-r--r--
ima.h	3.51 KB	-rw-r--r--
imx-media.h	605 B	-rw-r--r--
in.h	2.29 KB	-rw-r--r--
in6.h	1.63 KB	-rw-r--r--
indirect_call_wrapper.h	1.53 KB	-rw-r--r--
inet.h	2.64 KB	-rw-r--r--
inet_diag.h	2.42 KB	-rw-r--r--
inetdevice.h	8.65 KB	-rw-r--r--
init.h	9.55 KB	-rw-r--r--
init_ohci1394_dma.h	196 B	-rw-r--r--
init_task.h	1.37 KB	-rw-r--r--
initrd.h	836 B	-rw-r--r--
inotify.h	713 B	-rw-r--r--
input-polldev.h	2.03 KB	-rw-r--r--
input.h	19.37 KB	-rw-r--r--
integrity.h	1.13 KB	-rw-r--r--
intel-iommu.h	22.91 KB	-rw-r--r--
intel-ish-client-if.h	3.73 KB	-rw-r--r--
intel-pti.h	1.18 KB	-rw-r--r--
intel-svm.h	4.57 KB	-rw-r--r--
intel_rapl.h	4.12 KB	-rw-r--r--
intel_th.h	2.44 KB	-rw-r--r--
interconnect-provider.h	4.09 KB	-rw-r--r--
interconnect.h	1.68 KB	-rw-r--r--
interrupt.h	22.65 KB	-rw-r--r--
interval_tree.h	831 B	-rw-r--r--
interval_tree_generic.h	6.7 KB	-rw-r--r--
io-64-nonatomic-hi-lo.h	2.4 KB	-rw-r--r--
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io-mapping.h	3.77 KB	-rw-r--r--
io-pgtable.h	7.85 KB	-rw-r--r--
io.h	5.3 KB	-rw-r--r--
ioc3.h	3.14 KB	-rw-r--r--
iocontext.h	4.76 KB	-rw-r--r--
iomap.h	7.18 KB	-rw-r--r--
iommu-helper.h	1.07 KB	-rw-r--r--
iommu.h	31.06 KB	-rw-r--r--
iopoll.h	5.32 KB	-rw-r--r--
ioport.h	11.41 KB	-rw-r--r--
ioprio.h	2.41 KB	-rw-r--r--
iova.h	7.09 KB	-rw-r--r--
ip.h	1 KB	-rw-r--r--
ipack.h	8.69 KB	-rw-r--r--
ipc.h	613 B	-rw-r--r--
ipc_namespace.h	4.96 KB	-rw-r--r--
ipmi-fru.h	3.61 KB	-rw-r--r--
ipmi.h	10.85 KB	-rw-r--r--
ipmi_smi.h	7.98 KB	-rw-r--r--
ipv6.h	9.11 KB	-rw-r--r--
ipv6_route.h	372 B	-rw-r--r--
irq.h	40.35 KB	-rw-r--r--
irq_cpustat.h	845 B	-rw-r--r--
irq_poll.h	575 B	-rw-r--r--
irq_sim.h	985 B	-rw-r--r--
irq_work.h	1.34 KB	-rw-r--r--
irqbypass.h	3.45 KB	-rw-r--r--
irqchip.h	1.54 KB	-rw-r--r--
irqdesc.h	8.21 KB	-rw-r--r--
irqdomain.h	20.1 KB	-rw-r--r--
irqflags.h	5.09 KB	-rw-r--r--
irqhandler.h	362 B	-rw-r--r--
irqnr.h	856 B	-rw-r--r--
irqreturn.h	503 B	-rw-r--r--
isa.h	2.12 KB	-rw-r--r--
isapnp.h	3.14 KB	-rw-r--r--
iscsi_boot_sysfs.h	3.71 KB	-rw-r--r--
iscsi_ibft.h	917 B	-rw-r--r--
isicom.h	1.49 KB	-rw-r--r--
iversion.h	12.12 KB	-rw-r--r--
jbd2.h	46.81 KB	-rw-r--r--
jhash.h	4.62 KB	-rw-r--r--
jiffies.h	15.67 KB	-rw-r--r--
journal-head.h	2.87 KB	-rw-r--r--
joystick.h	437 B	-rw-r--r--
jump_label.h	14.94 KB	-rw-r--r--
jump_label_ratelimit.h	2.77 KB	-rw-r--r--
jz4740-adc.h	1023 B	-rw-r--r--
jz4780-nemc.h	976 B	-rw-r--r--
kallsyms.h	4.27 KB	-rw-r--r--
kasan-checks.h	1.18 KB	-rw-r--r--
kasan.h	5.66 KB	-rw-r--r--
kbd_diacr.h	198 B	-rw-r--r--
kbd_kern.h	3.84 KB	-rw-r--r--
kbuild.h	380 B	-rw-r--r--
kconfig.h	2.42 KB	-rw-r--r--
kcore.h	941 B	-rw-r--r--
kcov.h	1.13 KB	-rw-r--r--
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kdev_t.h	1.8 KB	-rw-r--r--
kern_levels.h	1.57 KB	-rw-r--r--
kernel-page-flags.h	505 B	-rw-r--r--
kernel.h	34.31 KB	-rw-r--r--
kernel_stat.h	2.5 KB	-rw-r--r--
kernelcapi.h	4.45 KB	-rw-r--r--
kernfs.h	17.47 KB	-rw-r--r--
kexec.h	11.65 KB	-rw-r--r--
key-type.h	6.45 KB	-rw-r--r--
key.h	15.4 KB	-rw-r--r--
keyboard.h	665 B	-rw-r--r--
keyctl.h	1.25 KB	-rw-r--r--
kfifo.h	24.19 KB	-rw-r--r--
kgdb.h	10.88 KB	-rw-r--r--
khugepaged.h	2.65 KB	-rw-r--r--
klist.h	1.88 KB	-rw-r--r--
kmemleak.h	3.27 KB	-rw-r--r--
kmod.h	1.02 KB	-rw-r--r--
kmsg_dump.h	2.85 KB	-rw-r--r--
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kobject_ns.h	1.89 KB	-rw-r--r--
kprobes.h	13.32 KB	-rw-r--r--
kref.h	3.08 KB	-rw-r--r--
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ksm.h	2.69 KB	-rw-r--r--
kthread.h	6.69 KB	-rw-r--r--
ktime.h	6.71 KB	-rw-r--r--
kvm_host.h	41.15 KB	-rw-r--r--
kvm_irqfd.h	1.99 KB	-rw-r--r--
kvm_para.h	402 B	-rw-r--r--
kvm_types.h	1.05 KB	-rw-r--r--
l2tp.h	261 B	-rw-r--r--
lantiq.h	365 B	-rw-r--r--
lapb.h	1.71 KB	-rw-r--r--
latencytop.h	1.18 KB	-rw-r--r--
lcd.h	3.78 KB	-rw-r--r--
lcm.h	275 B	-rw-r--r--
led-class-flash.h	5.61 KB	-rw-r--r--
led-lm3530.h	3.7 KB	-rw-r--r--
leds-bd2802.h	493 B	-rw-r--r--
leds-lp3944.h	950 B	-rw-r--r--
leds-lp3952.h	2.35 KB	-rw-r--r--
leds-pca9532.h	866 B	-rw-r--r--
leds-regulator.h	1.14 KB	-rw-r--r--
leds-tca6507.h	433 B	-rw-r--r--
leds-ti-lmu-common.h	1.12 KB	-rw-r--r--
leds.h	18.11 KB	-rw-r--r--
leds_pwm.h	407 B	-rw-r--r--
libata.h	65.1 KB	-rw-r--r--
libfdt.h	202 B	-rw-r--r--
libfdt_env.h	491 B	-rw-r--r--
libgcc.h	463 B	-rw-r--r--
libnvdimm.h	9.53 KB	-rw-r--r--
libps2.h	1.89 KB	-rw-r--r--
license.h	374 B	-rw-r--r--
lightnvm.h	14.88 KB	-rw-r--r--
limits.h	1.05 KB	-rw-r--r--
linkage.h	9.11 KB	-rw-r--r--
linkmode.h	1.95 KB	-rw-r--r--
linux_logo.h	1.91 KB	-rw-r--r--
lis3lv02d.h	5 KB	-rw-r--r--
list.h	26.9 KB	-rw-r--r--
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list_lru.h	7.29 KB	-rw-r--r--
list_nulls.h	3.47 KB	-rw-r--r--
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livepatch.h	7.43 KB	-rw-r--r--
llc.h	749 B	-rw-r--r--
llist.h	8.56 KB	-rw-r--r--
lockdep.h	20.23 KB	-rw-r--r--
lockref.h	1.5 KB	-rw-r--r--
log2.h	6.19 KB	-rw-r--r--
logic_pio.h	3.24 KB	-rw-r--r--
lp.h	2.76 KB	-rw-r--r--
lru_cache.h	11.82 KB	-rw-r--r--
lsm_audit.h	2.73 KB	-rw-r--r--
lsm_hooks.h	93.79 KB	-rw-r--r--
lz4.h	26.44 KB	-rw-r--r--
lzo.h	1.55 KB	-rw-r--r--
mISDNdsp.h	1.19 KB	-rw-r--r--
mISDNhw.h	5.39 KB	-rw-r--r--
mISDNif.h	14.91 KB	-rw-r--r--
mailbox_client.h	1.71 KB	-rw-r--r--
mailbox_controller.h	5.7 KB	-rw-r--r--
maple.h	2.71 KB	-rw-r--r--
marvell_phy.h	1.41 KB	-rw-r--r--
math64.h	6.86 KB	-rw-r--r--
max17040_battery.h	328 B	-rw-r--r--
mbcache.h	2.16 KB	-rw-r--r--
mbus.h	3.09 KB	-rw-r--r--
mc146818rtc.h	4.57 KB	-rw-r--r--
mc6821.h	1.18 KB	-rw-r--r--
mcb.h	3.71 KB	-rw-r--r--
mdev.h	5.21 KB	-rw-r--r--
mdio-bitbang.h	1.12 KB	-rw-r--r--
mdio-gpio.h	177 B	-rw-r--r--
mdio-mux.h	1021 B	-rw-r--r--
mdio.h	10.86 KB	-rw-r--r--
mei_cl_bus.h	3.43 KB	-rw-r--r--
mem_encrypt.h	885 B	-rw-r--r--
memblock.h	18.46 KB	-rw-r--r--
memcontrol.h	36.66 KB	-rw-r--r--
memfd.h	365 B	-rw-r--r--
memory.h	4.74 KB	-rw-r--r--
memory_hotplug.h	10.96 KB	-rw-r--r--
mempolicy.h	7.44 KB	-rw-r--r--
mempool.h	3.35 KB	-rw-r--r--
memremap.h	5.36 KB	-rw-r--r--
memstick.h	9.6 KB	-rw-r--r--
mic_bus.h	2.7 KB	-rw-r--r--
micrel_phy.h	1.28 KB	-rw-r--r--
microchipphy.h	2.65 KB	-rw-r--r--
migrate.h	5.96 KB	-rw-r--r--
migrate_mode.h	758 B	-rw-r--r--
mii.h	14.04 KB	-rw-r--r--
miscdevice.h	2.81 KB	-rw-r--r--
mm-arch-hooks.h	533 B	-rw-r--r--
mm.h	92.34 KB	-rw-r--r--
mm_inline.h	3.37 KB	-rw-r--r--
mm_types.h	23.61 KB	-rw-r--r--
mm_types_task.h	2.5 KB	-rw-r--r--
mman.h	3.28 KB	-rw-r--r--
mmap_lock.h	1.06 KB	-rw-r--r--
mmdebug.h	2.32 KB	-rw-r--r--
mmiotrace.h	3.05 KB	-rw-r--r--
mmu_context.h	378 B	-rw-r--r--
mmu_notifier.h	19.84 KB	-rw-r--r--
mmzone.h	41.85 KB	-rw-r--r--
mnt_namespace.h	617 B	-rw-r--r--
mod_devicetable.h	21.91 KB	-rw-r--r--
module.h	24.34 KB	-rw-r--r--
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moduleloader.h	2.87 KB	-rw-r--r--
moduleparam.h	19.53 KB	-rw-r--r--
mount.h	3.64 KB	-rw-r--r--
moxtet.h	2.37 KB	-rw-r--r--
mpage.h	761 B	-rw-r--r--
mpi.h	2.51 KB	-rw-r--r--
mpls.h	394 B	-rw-r--r--
mpls_iptunnel.h	178 B	-rw-r--r--
mroute.h	1.95 KB	-rw-r--r--
mroute6.h	2.39 KB	-rw-r--r--
mroute_base.h	12.03 KB	-rw-r--r--
msdos_fs.h	273 B	-rw-r--r--
msg.h	395 B	-rw-r--r--
msi.h	12.84 KB	-rw-r--r--
mutex.h	6.55 KB	-rw-r--r--
mv643xx.h	51.27 KB	-rw-r--r--
mv643xx_eth.h	1.95 KB	-rw-r--r--
mv643xx_i2c.h	335 B	-rw-r--r--
mvebu-pmsu.h	520 B	-rw-r--r--
mxm-wmi.h	399 B	-rw-r--r--
n_r3964.h	4.06 KB	-rw-r--r--
namei.h	3.34 KB	-rw-r--r--
nd.h	5.52 KB	-rw-r--r--
ndctl.h	674 B	-rw-r--r--
net.h	11.75 KB	-rw-r--r--
netdev_features.h	9.7 KB	-rw-r--r--
netdevice.h	152.29 KB	-rw-r--r--
netfilter.h	13.36 KB	-rw-r--r--
netfilter_bridge.h	2.08 KB	-rw-r--r--
netfilter_defs.h	242 B	-rw-r--r--
netfilter_ingress.h	1.44 KB	-rw-r--r--
netfilter_ipv4.h	1.05 KB	-rw-r--r--
netfilter_ipv6.h	5.85 KB	-rw-r--r--
netlink.h	7.19 KB	-rw-r--r--
netpoll.h	2.69 KB	-rw-r--r--
nfs.h	1.31 KB	-rw-r--r--
nfs3.h	260 B	-rw-r--r--
nfs4.h	17.86 KB	-rw-r--r--
nfs_fs.h	17.2 KB	-rw-r--r--
nfs_fs_i.h	308 B	-rw-r--r--
nfs_fs_sb.h	9.54 KB	-rw-r--r--
nfs_iostat.h	4.18 KB	-rw-r--r--
nfs_page.h	6.38 KB	-rw-r--r--
nfs_xdr.h	40.17 KB	-rw-r--r--
nfsacl.h	1.15 KB	-rw-r--r--
nl802154.h	3.85 KB	-rw-r--r--
nls.h	3.09 KB	-rw-r--r--
nmi.h	6.86 KB	-rw-r--r--
node.h	4.69 KB	-rw-r--r--
nodemask.h	17.1 KB	-rw-r--r--
nospec.h	2.21 KB	-rw-r--r--
notifier.h	8.21 KB	-rw-r--r--
ns_common.h	235 B	-rw-r--r--
nsc_gpio.h	1.42 KB	-rw-r--r--
nsproxy.h	2.48 KB	-rw-r--r--
ntb.h	52.43 KB	-rw-r--r--
ntb_transport.h	3.8 KB	-rw-r--r--
nubus.h	5.54 KB	-rw-r--r--
numa.h	292 B	-rw-r--r--
nvme-fc-driver.h	37.18 KB	-rw-r--r--
nvme-fc.h	9.69 KB	-rw-r--r--
nvme-rdma.h	2.04 KB	-rw-r--r--
nvme-tcp.h	4.42 KB	-rw-r--r--
nvme.h	33.32 KB	-rw-r--r--
nvmem-consumer.h	5.8 KB	-rw-r--r--
nvmem-provider.h	3.88 KB	-rw-r--r--
nvram.h	3.47 KB	-rw-r--r--
objagg.h	1.94 KB	-rw-r--r--
of.h	42.38 KB	-rw-r--r--
of_address.h	4.47 KB	-rw-r--r--
of_clk.h	795 B	-rw-r--r--
of_device.h	2.99 KB	-rw-r--r--
of_dma.h	2.3 KB	-rw-r--r--
of_fdt.h	3.69 KB	-rw-r--r--
of_gpio.h	3.96 KB	-rw-r--r--
of_graph.h	3.41 KB	-rw-r--r--
of_iommu.h	821 B	-rw-r--r--
of_irq.h	3.62 KB	-rw-r--r--
of_mdio.h	2.98 KB	-rw-r--r--
of_net.h	720 B	-rw-r--r--
of_pci.h	935 B	-rw-r--r--
of_pdt.h	1.14 KB	-rw-r--r--
of_platform.h	3.88 KB	-rw-r--r--
of_reserved_mem.h	2.15 KB	-rw-r--r--
oid_registry.h	4.44 KB	-rw-r--r--
olpc-ec.h	1.95 KB	-rw-r--r--
omap-dma.h	10.47 KB	-rw-r--r--
omap-gpmc.h	2.73 KB	-rw-r--r--
omap-iommu.h	880 B	-rw-r--r--
omap-mailbox.h	689 B	-rw-r--r--
omapfb.h	576 B	-rw-r--r--
once.h	2.79 KB	-rw-r--r--
oom.h	3.26 KB	-rw-r--r--
openvswitch.h	403 B	-rw-r--r--
oprofile.h	6.1 KB	-rw-r--r--
osq_lock.h	1.04 KB	-rw-r--r--
overflow.h	11.25 KB	-rw-r--r--
packing.h	1.78 KB	-rw-r--r--
padata.h	6.35 KB	-rw-r--r--
page-flags-layout.h	3.28 KB	-rw-r--r--
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page-isolation.h	1.65 KB	-rw-r--r--
page_counter.h	1.94 KB	-rw-r--r--
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page_idle.h	2.62 KB	-rw-r--r--
page_owner.h	2.29 KB	-rw-r--r--
page_ref.h	4.99 KB	-rw-r--r--
pageblock-flags.h	2.72 KB	-rw-r--r--
pagemap.h	18.76 KB	-rw-r--r--
pagevec.h	2.34 KB	-rw-r--r--
pagewalk.h	2.39 KB	-rw-r--r--
parman.h	2.87 KB	-rw-r--r--
parport.h	17.84 KB	-rw-r--r--
parport_pc.h	6.56 KB	-rw-r--r--
parser.h	1.04 KB	-rw-r--r--
pata_arasan_cf_data.h	1.22 KB	-rw-r--r--
patchkey.h	757 B	-rw-r--r--
path.h	572 B	-rw-r--r--
pch_dma.h	408 B	-rw-r--r--
pci-acpi.h	3.48 KB	-rw-r--r--
pci-ats.h	1.52 KB	-rw-r--r--
pci-dma-compat.h	3.66 KB	-rw-r--r--
pci-ecam.h	2.19 KB	-rw-r--r--
pci-ep-cfs.h	951 B	-rw-r--r--
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pci-p2pdma.h	3.95 KB	-rw-r--r--
pci.h	86.42 KB	-rw-r--r--
pci_hotplug.h	4.25 KB	-rw-r--r--
pci_ids.h	121.45 KB	-rw-r--r--
pda_power.h	1005 B	-rw-r--r--
pe.h	15.05 KB	-rw-r--r--
percpu-defs.h	18.12 KB	-rw-r--r--
percpu-refcount.h	10.46 KB	-rw-r--r--
percpu-rwsem.h	3.93 KB	-rw-r--r--
percpu.h	4.65 KB	-rw-r--r--
percpu_counter.h	4.27 KB	-rw-r--r--
perf_event.h	42.54 KB	-rw-r--r--
perf_regs.h	1.13 KB	-rw-r--r--
personality.h	393 B	-rw-r--r--
pfn.h	666 B	-rw-r--r--
pfn_t.h	3.21 KB	-rw-r--r--
phonet.h	537 B	-rw-r--r--
phy.h	40.59 KB	-rw-r--r--
phy_fixed.h	1.77 KB	-rw-r--r--
phy_led_triggers.h	1.01 KB	-rw-r--r--
phylink.h	10.47 KB	-rw-r--r--
pid.h	5.85 KB	-rw-r--r--
pid_namespace.h	2.33 KB	-rw-r--r--
pim.h	2.67 KB	-rw-r--r--
pipe_fs_i.h	6.17 KB	-rw-r--r--
pkeys.h	1016 B	-rw-r--r--
pktcdvd.h	5.87 KB	-rw-r--r--
pl320-ipc.h	209 B	-rw-r--r--
pl353-smc.h	739 B	-rw-r--r--
platform_device.h	13.05 KB	-rw-r--r--
plist.h	8.66 KB	-rw-r--r--
pm-trace.h	940 B	-rw-r--r--
pm.h	33.27 KB	-rw-r--r--
pm2301_charger.h	1.09 KB	-rw-r--r--
pm_clock.h	2.45 KB	-rw-r--r--
pm_domain.h	11.74 KB	-rw-r--r--
pm_opp.h	11.41 KB	-rw-r--r--
pm_qos.h	9.83 KB	-rw-r--r--
pm_runtime.h	9.56 KB	-rw-r--r--
pm_wakeirq.h	1.48 KB	-rw-r--r--
pm_wakeup.h	5.74 KB	-rw-r--r--
pmbus.h	970 B	-rw-r--r--
pmu.h	2.44 KB	-rw-r--r--
pnfs_osd_xdr.h	9.27 KB	-rw-r--r--
pnp.h	14.89 KB	-rw-r--r--
poison.h	2.56 KB	-rw-r--r--
poll.h	4.01 KB	-rw-r--r--
posix-clock.h	3.91 KB	-rw-r--r--
posix-timers.h	6.31 KB	-rw-r--r--
posix_acl.h	3.09 KB	-rw-r--r--
posix_acl_xattr.h	1.58 KB	-rw-r--r--
power_supply.h	16.06 KB	-rw-r--r--
powercap.h	12.04 KB	-rw-r--r--
ppp-comp.h	2.95 KB	-rw-r--r--
ppp_channel.h	2.87 KB	-rw-r--r--
ppp_defs.h	305 B	-rw-r--r--
pps-gpio.h	395 B	-rw-r--r--
pps_kernel.h	2.9 KB	-rw-r--r--
pr.h	566 B	-rw-r--r--
prandom.h	3.38 KB	-rw-r--r--
preempt.h	10 KB	-rw-r--r--
prefetch.h	1.7 KB	-rw-r--r--
prime_numbers.h	1.35 KB	-rw-r--r--
printk.h	15.92 KB	-rw-r--r--
proc_fs.h	6.58 KB	-rw-r--r--
proc_ns.h	2.6 KB	-rw-r--r--
processor.h	1.84 KB	-rw-r--r--
profile.h	2.68 KB	-rw-r--r--
projid.h	2.22 KB	-rw-r--r--
property.h	14.29 KB	-rw-r--r--
psci.h	1.48 KB	-rw-r--r--
pseudo_fs.h	355 B	-rw-r--r--
psi.h	1.53 KB	-rw-r--r--
psi_types.h	3.53 KB	-rw-r--r--
psp-sev.h	17.04 KB	-rw-r--r--
pstore.h	7.28 KB	-rw-r--r--
pstore_ram.h	3.81 KB	-rw-r--r--
pti.h	240 B	-rw-r--r--
ptp_classify.h	2.33 KB	-rw-r--r--
ptp_clock_kernel.h	9.01 KB	-rw-r--r--
ptr_ring.h	16.27 KB	-rw-r--r--
ptrace.h	14.65 KB	-rw-r--r--
purgatory.h	589 B	-rw-r--r--
pvclock_gtod.h	548 B	-rw-r--r--
pwm.h	16.08 KB	-rw-r--r--
pwm_backlight.h	802 B	-rw-r--r--
pxa168_eth.h	728 B	-rw-r--r--
pxa2xx_ssp.h	9.85 KB	-rw-r--r--
qcom-geni-se.h	12.21 KB	-rw-r--r--
qcom_scm.h	4.09 KB	-rw-r--r--
qnx6_fs.h	3.27 KB	-rw-r--r--
quota.h	18.7 KB	-rw-r--r--
quotaops.h	10.37 KB	-rw-r--r--
radix-tree.h	15.61 KB	-rw-r--r--
raid_class.h	2 KB	-rw-r--r--
ramfs.h	659 B	-rw-r--r--
random.h	3.98 KB	-rw-r--r--
range.h	651 B	-rw-r--r--
ras.h	1.18 KB	-rw-r--r--
ratelimit.h	2.81 KB	-rw-r--r--
rational.h	639 B	-rw-r--r--
rbtree.h	5.09 KB	-rw-r--r--
rbtree_augmented.h	9.6 KB	-rw-r--r--
rbtree_latch.h	6.64 KB	-rw-r--r--
rcu_node_tree.h	3.7 KB	-rw-r--r--
rcu_segcblist.h	2.77 KB	-rw-r--r--
rcu_sync.h	1.46 KB	-rw-r--r--
rculist.h	25.42 KB	-rw-r--r--
rculist_bl.h	4.36 KB	-rw-r--r--
rculist_nulls.h	6.17 KB	-rw-r--r--
rcupdate.h	34.54 KB	-rw-r--r--
rcupdate_wait.h	897 B	-rw-r--r--
rcutiny.h	2.58 KB	-rw-r--r--
rcutree.h	1.93 KB	-rw-r--r--
rcuwait.h	1.23 KB	-rw-r--r--
reboot-mode.h	600 B	-rw-r--r--
reboot.h	2.11 KB	-rw-r--r--
reciprocal_div.h	3.28 KB	-rw-r--r--
refcount.h	10.3 KB	-rw-r--r--
regmap.h	52.3 KB	-rw-r--r--
regset.h	14.92 KB	-rw-r--r--
relay.h	8.84 KB	-rw-r--r--
remoteproc.h	22.07 KB	-rw-r--r--
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resource.h	339 B	-rw-r--r--
resource_ext.h	1.83 KB	-rw-r--r--
restart_block.h	1.09 KB	-rw-r--r--
rfkill.h	9.86 KB	-rw-r--r--
rhashtable-types.h	3.45 KB	-rw-r--r--
rhashtable.h	37.82 KB	-rw-r--r--
ring_buffer.h	7.24 KB	-rw-r--r--
rio.h	19.02 KB	-rw-r--r--
rio_drv.h	14.5 KB	-rw-r--r--
rio_ids.h	1.08 KB	-rw-r--r--
rio_regs.h	19.07 KB	-rw-r--r--
rmap.h	9.08 KB	-rw-r--r--
rmi.h	12.02 KB	-rw-r--r--
rndis.h	16.86 KB	-rw-r--r--
rodata_test.h	394 B	-rw-r--r--
root_dev.h	619 B	-rw-r--r--
rpmsg.h	7.3 KB	-rw-r--r--
rslib.h	3.67 KB	-rw-r--r--
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rtmutex.h	3.47 KB	-rw-r--r--
rtnetlink.h	4.46 KB	-rw-r--r--
rtsx_common.h	890 B	-rw-r--r--
rtsx_pci.h	39.6 KB	-rw-r--r--
rtsx_usb.h	15.38 KB	-rw-r--r--
rwlock.h	4.35 KB	-rw-r--r--
rwlock_api_smp.h	7.67 KB	-rw-r--r--
rwlock_types.h	1.12 KB	-rw-r--r--
rwsem.h	6.4 KB	-rw-r--r--
s3c_adc_battery.h	971 B	-rw-r--r--
sbitmap.h	16.52 KB	-rw-r--r--
scatterlist.h	16.16 KB	-rw-r--r--
scc.h	2.84 KB	-rw-r--r--
sched.h	55.47 KB	-rw-r--r--
sched_clock.h	520 B	-rw-r--r--
scif.h	58.87 KB	-rw-r--r--
scmi_protocol.h	10.44 KB	-rw-r--r--
scpi_protocol.h	2.04 KB	-rw-r--r--
screen_info.h	191 B	-rw-r--r--
sctp.h	21.99 KB	-rw-r--r--
scx200.h	1.82 KB	-rw-r--r--
scx200_gpio.h	2.38 KB	-rw-r--r--
sdb.h	4.17 KB	-rw-r--r--
sdla.h	6.69 KB	-rw-r--r--
seccomp.h	2.94 KB	-rw-r--r--
securebits.h	239 B	-rw-r--r--
security.h	51.54 KB	-rw-r--r--
sed-opal.h	1.62 KB	-rw-r--r--
seg6.h	121 B	-rw-r--r--
seg6_genl.h	136 B	-rw-r--r--
seg6_hmac.h	136 B	-rw-r--r--
seg6_iptunnel.h	148 B	-rw-r--r--
seg6_local.h	100 B	-rw-r--r--
selection.h	1.74 KB	-rw-r--r--
sem.h	599 B	-rw-r--r--
semaphore.h	1.35 KB	-rw-r--r--
seq_buf.h	3.15 KB	-rw-r--r--
seq_file.h	7.43 KB	-rw-r--r--
seq_file_net.h	730 B	-rw-r--r--
seqlock.h	16.46 KB	-rw-r--r--
seqno-fence.h	3.57 KB	-rw-r--r--
serdev.h	9.45 KB	-rw-r--r--
serial.h	630 B	-rw-r--r--
serial_8250.h	6 KB	-rw-r--r--
serial_bcm63xx.h	4.73 KB	-rw-r--r--
serial_core.h	19.48 KB	-rw-r--r--
serial_max3100.h	1.19 KB	-rw-r--r--
serial_pnx8xxx.h	1.96 KB	-rw-r--r--
serial_s3c.h	8.58 KB	-rw-r--r--
serial_sci.h	1.6 KB	-rw-r--r--
serio.h	4.28 KB	-rw-r--r--
set_memory.h	1.24 KB	-rw-r--r--
sfi.h	5.75 KB	-rw-r--r--
sfi_acpi.h	3.39 KB	-rw-r--r--
sfp.h	14.11 KB	-rw-r--r--
sh_clk.h	5.96 KB	-rw-r--r--
sh_dma.h	3.47 KB	-rw-r--r--
sh_eth.h	369 B	-rw-r--r--
sh_intc.h	3.59 KB	-rw-r--r--
sh_timer.h	172 B	-rw-r--r--
shdma-base.h	4.27 KB	-rw-r--r--
shm.h	968 B	-rw-r--r--
shmem_fs.h	5.15 KB	-rw-r--r--
shrinker.h	3.21 KB	-rw-r--r--
signal.h	12.94 KB	-rw-r--r--
signal_types.h	1.21 KB	-rw-r--r--
signalfd.h	817 B	-rw-r--r--
siox.h	2.26 KB	-rw-r--r--
siphash.h	5.59 KB	-rw-r--r--
sirfsoc_dma.h	162 B	-rw-r--r--
sizes.h	1.16 KB	-rw-r--r--
skb_array.h	5.18 KB	-rw-r--r--
skbuff.h	129.45 KB	-rw-r--r--
skmsg.h	11.52 KB	-rw-r--r--
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slab_def.h	2.88 KB	-rw-r--r--
slimbus.h	6.93 KB	-rw-r--r--
slub_def.h	5.56 KB	-rw-r--r--
sm501-regs.h	11.62 KB	-rw-r--r--
sm501.h	4.02 KB	-rw-r--r--
smc911x.h	294 B	-rw-r--r--
smc91x.h	1.57 KB	-rw-r--r--
smp.h	5.98 KB	-rw-r--r--
smpboot.h	1.68 KB	-rw-r--r--
smsc911x.h	1.63 KB	-rw-r--r--
smscphy.h	1.25 KB	-rw-r--r--
sock_diag.h	2.16 KB	-rw-r--r--
socket.h	13.61 KB	-rw-r--r--
sonet.h	469 B	-rw-r--r--
sony-laptop.h	1.41 KB	-rw-r--r--
sonypi.h	1.71 KB	-rw-r--r--
sort.h	420 B	-rw-r--r--
sound.h	685 B	-rw-r--r--
soundcard.h	1.59 KB	-rw-r--r--
spinlock.h	13.44 KB	-rw-r--r--
spinlock_api_smp.h	5.4 KB	-rw-r--r--
spinlock_api_up.h	3.31 KB	-rw-r--r--
spinlock_types.h	1.99 KB	-rw-r--r--
spinlock_types_up.h	726 B	-rw-r--r--
spinlock_up.h	2.16 KB	-rw-r--r--
splice.h	3.01 KB	-rw-r--r--
spmi.h	5.55 KB	-rw-r--r--
sram.h	844 B	-rw-r--r--
srcu.h	6.57 KB	-rw-r--r--
srcutiny.h	2.59 KB	-rw-r--r--
srcutree.h	4.87 KB	-rw-r--r--
ssbi.h	726 B	-rw-r--r--
stackdepot.h	539 B	-rw-r--r--
stackleak.h	909 B	-rw-r--r--
stackprotector.h	321 B	-rw-r--r--
stacktrace.h	3.42 KB	-rw-r--r--
start_kernel.h	415 B	-rw-r--r--
stat.h	1.18 KB	-rw-r--r--
statfs.h	1.4 KB	-rw-r--r--
static_key.h	30 B	-rw-r--r--
stddef.h	1.24 KB	-rw-r--r--
stm.h	4.35 KB	-rw-r--r--
stmmac.h	4.79 KB	-rw-r--r--
stmp3xxx_rtc_wdt.h	331 B	-rw-r--r--
stmp_device.h	412 B	-rw-r--r--
stop_machine.h	4.74 KB	-rw-r--r--
string.h	16.59 KB	-rw-r--r--
string_helpers.h	2.53 KB	-rw-r--r--
stringhash.h	2.65 KB	-rw-r--r--
stringify.h	341 B	-rw-r--r--
sungem_phy.h	3.94 KB	-rw-r--r--
sunserialcore.h	1.08 KB	-rw-r--r--
sunxi-rsb.h	2.89 KB	-rw-r--r--
superhyway.h	2.81 KB	-rw-r--r--
suspend.h	20.62 KB	-rw-r--r--
svga.h	3.75 KB	-rw-r--r--
sw842.h	328 B	-rw-r--r--
swab.h	569 B	-rw-r--r--
swait.h	10.04 KB	-rw-r--r--
swap.h	21.37 KB	-rw-r--r--
swap_cgroup.h	971 B	-rw-r--r--
swap_slots.h	840 B	-rw-r--r--
swapfile.h	556 B	-rw-r--r--
swapops.h	8.56 KB	-rw-r--r--
swiotlb.h	3 KB	-rw-r--r--
switchtec.h	8.33 KB	-rw-r--r--
sxgbe_platform.h	1.2 KB	-rw-r--r--
sync_core.h	581 B	-rw-r--r--
sync_file.h	1.57 KB	-rw-r--r--
synclink.h	989 B	-rw-r--r--
sys.h	960 B	-rw-r--r--
sys_soc.h	1.21 KB	-rw-r--r--
syscalls.h	55.6 KB	-rw-r--r--
syscore_ops.h	633 B	-rw-r--r--
sysctl.h	7.78 KB	-rw-r--r--
sysfs.h	17.13 KB	-rw-r--r--
syslog.h	1.24 KB	-rw-r--r--
sysrq.h	1.79 KB	-rw-r--r--
sysv_fs.h	9.03 KB	-rw-r--r--
t10-pi.h	1.5 KB	-rw-r--r--
task_io_accounting.h	1.13 KB	-rw-r--r--
task_io_accounting_ops.h	2.55 KB	-rw-r--r--
task_work.h	617 B	-rw-r--r--
taskstats_kern.h	957 B	-rw-r--r--
tboot.h	3.38 KB	-rw-r--r--
tc.h	3.45 KB	-rw-r--r--
tca6416_keypad.h	701 B	-rw-r--r--
tcp.h	16.11 KB	-rw-r--r--
tee_drv.h	18.2 KB	-rw-r--r--
textsearch.h	4.73 KB	-rw-r--r--
textsearch_fsm.h	1.19 KB	-rw-r--r--
tfrc.h	1.68 KB	-rw-r--r--
thermal.h	19.34 KB	-rw-r--r--
thread_info.h	4.44 KB	-rw-r--r--
threads.h	1.28 KB	-rw-r--r--
thunderbolt.h	19.24 KB	-rw-r--r--
ti-emif-sram.h	5.15 KB	-rw-r--r--
ti_wilink_st.h	13.46 KB	-rw-r--r--
tick.h	9.41 KB	-rw-r--r--
tifm.h	4.66 KB	-rw-r--r--
timb_dma.h	1.17 KB	-rw-r--r--
timb_gpio.h	717 B	-rw-r--r--
time.h	3.75 KB	-rw-r--r--
time32.h	5.76 KB	-rw-r--r--
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timecounter.h	4.14 KB	-rw-r--r--
timekeeper_internal.h	5.33 KB	-rw-r--r--
timekeeping.h	7.18 KB	-rw-r--r--
timekeeping32.h	920 B	-rw-r--r--
timer.h	7.54 KB	-rw-r--r--
timerfd.h	508 B	-rw-r--r--
timeriomem-rng.h	432 B	-rw-r--r--
timerqueue.h	1.4 KB	-rw-r--r--
timex.h	6.7 KB	-rw-r--r--
tnum.h	2.95 KB	-rw-r--r--
topology.h	5.55 KB	-rw-r--r--
torture.h	3.21 KB	-rw-r--r--
toshiba.h	460 B	-rw-r--r--
tpm.h	5.48 KB	-rw-r--r--
tpm_command.h	847 B	-rw-r--r--
tpm_eventlog.h	6.53 KB	-rw-r--r--
trace.h	964 B	-rw-r--r--
trace_clock.h	667 B	-rw-r--r--
trace_events.h	20.52 KB	-rw-r--r--
trace_seq.h	3.74 KB	-rw-r--r--
tracefs.h	1.05 KB	-rw-r--r--
tracehook.h	7.25 KB	-rw-r--r--
tracepoint-defs.h	1.03 KB	-rw-r--r--
tracepoint.h	17.97 KB	-rw-r--r--
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ts-nbus.h	532 B	-rw-r--r--
tsacct_kern.h	1.2 KB	-rw-r--r--
tty.h	28.04 KB	-rw-r--r--
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tty_flip.h	1.62 KB	-rw-r--r--
tty_ldisc.h	7.96 KB	-rw-r--r--
typecheck.h	624 B	-rw-r--r--
types.h	5.41 KB	-rw-r--r--
u64_stats_sync.h	5.17 KB	-rw-r--r--
uaccess.h	13.08 KB	-rw-r--r--
ucb1400.h	4.12 KB	-rw-r--r--
ucs2_string.h	662 B	-rw-r--r--
udp.h	4.22 KB	-rw-r--r--
uidgid.h	4.07 KB	-rw-r--r--
uio.h	8.55 KB	-rw-r--r--
uio_driver.h	4.1 KB	-rw-r--r--
umh.h	2.26 KB	-rw-r--r--
unicode.h	946 B	-rw-r--r--
units.h	2.18 KB	-rw-r--r--
uprobes.h	6 KB	-rw-r--r--
usb.h	77.19 KB	-rw-r--r--
usb_usual.h	3.58 KB	-rw-r--r--
usbdevice_fs.h	2.18 KB	-rw-r--r--
user-return-notifier.h	1.18 KB	-rw-r--r--
user.h	22 B	-rw-r--r--
user_namespace.h	4.65 KB	-rw-r--r--
userfaultfd_k.h	3.69 KB	-rw-r--r--
util_macros.h	1.17 KB	-rw-r--r--
uts.h	388 B	-rw-r--r--
utsname.h	1.79 KB	-rw-r--r--
uuid.h	1.99 KB	-rw-r--r--
vbox_utils.h	1.69 KB	-rw-r--r--
verification.h	1.75 KB	-rw-r--r--
vermagic.h	1.13 KB	-rw-r--r--
vexpress.h	1.06 KB	-rw-r--r--
vfio.h	6.29 KB	-rw-r--r--
vfs.h	116 B	-rw-r--r--
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Code Editor : usb.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_USB_H
#define __LINUX_USB_H

#include <linux/mod_devicetable.h>
#include <linux/usb/ch9.h>

#define USB_MAJOR			180
#define USB_DEVICE_MAJOR		189

#ifdef __KERNEL__

#include <linux/errno.h>        /* for -ENODEV */
#include <linux/delay.h>	/* for mdelay() */
#include <linux/interrupt.h>	/* for in_interrupt() */
#include <linux/list.h>		/* for struct list_head */
#include <linux/kref.h>		/* for struct kref */
#include <linux/device.h>	/* for struct device */
#include <linux/fs.h>		/* for struct file_operations */
#include <linux/completion.h>	/* for struct completion */
#include <linux/sched.h>	/* for current && schedule_timeout */
#include <linux/mutex.h>	/* for struct mutex */
#include <linux/pm_runtime.h>	/* for runtime PM */

struct usb_device;
struct usb_driver;
struct wusb_dev;

/*-------------------------------------------------------------------------*/

/*
 * Host-side wrappers for standard USB descriptors ... these are parsed
 * from the data provided by devices.  Parsing turns them from a flat
 * sequence of descriptors into a hierarchy:
 *
 *  - devices have one (usually) or more configs;
 *  - configs have one (often) or more interfaces;
 *  - interfaces have one (usually) or more settings;
 *  - each interface setting has zero or (usually) more endpoints.
 *  - a SuperSpeed endpoint has a companion descriptor
 *
 * And there might be other descriptors mixed in with those.
 *
 * Devices may also have class-specific or vendor-specific descriptors.
 */

struct ep_device;

/**
 * struct usb_host_endpoint - host-side endpoint descriptor and queue
 * @desc: descriptor for this endpoint, wMaxPacketSize in native byteorder
 * @ss_ep_comp: SuperSpeed companion descriptor for this endpoint
 * @ssp_isoc_ep_comp: SuperSpeedPlus isoc companion descriptor for this endpoint
 * @urb_list: urbs queued to this endpoint; maintained by usbcore
 * @hcpriv: for use by HCD; typically holds hardware dma queue head (QH)
 *	with one or more transfer descriptors (TDs) per urb
 * @ep_dev: ep_device for sysfs info
 * @extra: descriptors following this endpoint in the configuration
 * @extralen: how many bytes of "extra" are valid
 * @enabled: URBs may be submitted to this endpoint
 * @streams: number of USB-3 streams allocated on the endpoint
 *
 * USB requests are always queued to a given endpoint, identified by a
 * descriptor within an active interface in a given USB configuration.
 */
struct usb_host_endpoint {
	struct usb_endpoint_descriptor		desc;
	struct usb_ss_ep_comp_descriptor	ss_ep_comp;
	struct usb_ssp_isoc_ep_comp_descriptor	ssp_isoc_ep_comp;
	struct list_head		urb_list;
	void				*hcpriv;
	struct ep_device		*ep_dev;	/* For sysfs info */

unsigned char *extra;   /* Extra descriptors */
	int extralen;
	int enabled;
	int streams;
};

/* host-side wrapper for one interface setting's parsed descriptors */
struct usb_host_interface {
	struct usb_interface_descriptor	desc;

int extralen;
	unsigned char *extra;   /* Extra descriptors */

/* array of desc.bNumEndpoints endpoints associated with this
	 * interface setting.  these will be in no particular order.
	 */
	struct usb_host_endpoint *endpoint;

char *string;		/* iInterface string, if present */
};

enum usb_interface_condition {
	USB_INTERFACE_UNBOUND = 0,
	USB_INTERFACE_BINDING,
	USB_INTERFACE_BOUND,
	USB_INTERFACE_UNBINDING,
};

int __must_check
usb_find_common_endpoints(struct usb_host_interface *alt,
		struct usb_endpoint_descriptor **bulk_in,
		struct usb_endpoint_descriptor **bulk_out,
		struct usb_endpoint_descriptor **int_in,
		struct usb_endpoint_descriptor **int_out);

int __must_check
usb_find_common_endpoints_reverse(struct usb_host_interface *alt,
		struct usb_endpoint_descriptor **bulk_in,
		struct usb_endpoint_descriptor **bulk_out,
		struct usb_endpoint_descriptor **int_in,
		struct usb_endpoint_descriptor **int_out);

static inline int __must_check
usb_find_bulk_in_endpoint(struct usb_host_interface *alt,
		struct usb_endpoint_descriptor **bulk_in)
{
	return usb_find_common_endpoints(alt, bulk_in, NULL, NULL, NULL);
}

static inline int __must_check
usb_find_bulk_out_endpoint(struct usb_host_interface *alt,
		struct usb_endpoint_descriptor **bulk_out)
{
	return usb_find_common_endpoints(alt, NULL, bulk_out, NULL, NULL);
}

static inline int __must_check
usb_find_int_in_endpoint(struct usb_host_interface *alt,
		struct usb_endpoint_descriptor **int_in)
{
	return usb_find_common_endpoints(alt, NULL, NULL, int_in, NULL);
}

static inline int __must_check
usb_find_int_out_endpoint(struct usb_host_interface *alt,
		struct usb_endpoint_descriptor **int_out)
{
	return usb_find_common_endpoints(alt, NULL, NULL, NULL, int_out);
}

static inline int __must_check
usb_find_last_bulk_in_endpoint(struct usb_host_interface *alt,
		struct usb_endpoint_descriptor **bulk_in)
{
	return usb_find_common_endpoints_reverse(alt, bulk_in, NULL, NULL, NULL);
}

static inline int __must_check
usb_find_last_bulk_out_endpoint(struct usb_host_interface *alt,
		struct usb_endpoint_descriptor **bulk_out)
{
	return usb_find_common_endpoints_reverse(alt, NULL, bulk_out, NULL, NULL);
}

static inline int __must_check
usb_find_last_int_in_endpoint(struct usb_host_interface *alt,
		struct usb_endpoint_descriptor **int_in)
{
	return usb_find_common_endpoints_reverse(alt, NULL, NULL, int_in, NULL);
}

static inline int __must_check
usb_find_last_int_out_endpoint(struct usb_host_interface *alt,
		struct usb_endpoint_descriptor **int_out)
{
	return usb_find_common_endpoints_reverse(alt, NULL, NULL, NULL, int_out);
}

/**
 * struct usb_interface - what usb device drivers talk to
 * @altsetting: array of interface structures, one for each alternate
 *	setting that may be selected.  Each one includes a set of
 *	endpoint configurations.  They will be in no particular order.
 * @cur_altsetting: the current altsetting.
 * @num_altsetting: number of altsettings defined.
 * @intf_assoc: interface association descriptor
 * @minor: the minor number assigned to this interface, if this
 *	interface is bound to a driver that uses the USB major number.
 *	If this interface does not use the USB major, this field should
 *	be unused.  The driver should set this value in the probe()
 *	function of the driver, after it has been assigned a minor
 *	number from the USB core by calling usb_register_dev().
 * @condition: binding state of the interface: not bound, binding
 *	(in probe()), bound to a driver, or unbinding (in disconnect())
 * @sysfs_files_created: sysfs attributes exist
 * @ep_devs_created: endpoint child pseudo-devices exist
 * @unregistering: flag set when the interface is being unregistered
 * @needs_remote_wakeup: flag set when the driver requires remote-wakeup
 *	capability during autosuspend.
 * @needs_altsetting0: flag set when a set-interface request for altsetting 0
 *	has been deferred.
 * @needs_binding: flag set when the driver should be re-probed or unbound
 *	following a reset or suspend operation it doesn't support.
 * @authorized: This allows to (de)authorize individual interfaces instead
 *	a whole device in contrast to the device authorization.
 * @dev: driver model's view of this device
 * @usb_dev: if an interface is bound to the USB major, this will point
 *	to the sysfs representation for that device.
 * @reset_ws: Used for scheduling resets from atomic context.
 * @resetting_device: USB core reset the device, so use alt setting 0 as
 *	current; needs bandwidth alloc after reset.
 *
 * USB device drivers attach to interfaces on a physical device.  Each
 * interface encapsulates a single high level function, such as feeding
 * an audio stream to a speaker or reporting a change in a volume control.
 * Many USB devices only have one interface.  The protocol used to talk to
 * an interface's endpoints can be defined in a usb "class" specification,
 * or by a product's vendor.  The (default) control endpoint is part of
 * every interface, but is never listed among the interface's descriptors.
 *
 * The driver that is bound to the interface can use standard driver model
 * calls such as dev_get_drvdata() on the dev member of this structure.
 *
 * Each interface may have alternate settings.  The initial configuration
 * of a device sets altsetting 0, but the device driver can change
 * that setting using usb_set_interface().  Alternate settings are often
 * used to control the use of periodic endpoints, such as by having
 * different endpoints use different amounts of reserved USB bandwidth.
 * All standards-conformant USB devices that use isochronous endpoints
 * will use them in non-default settings.
 *
 * The USB specification says that alternate setting numbers must run from
 * 0 to one less than the total number of alternate settings.  But some
 * devices manage to mess this up, and the structures aren't necessarily
 * stored in numerical order anyhow.  Use usb_altnum_to_altsetting() to
 * look up an alternate setting in the altsetting array based on its number.
 */
struct usb_interface {
	/* array of alternate settings for this interface,
	 * stored in no particular order */
	struct usb_host_interface *altsetting;

struct usb_host_interface *cur_altsetting;	/* the currently
					 * active alternate setting */
	unsigned num_altsetting;	/* number of alternate settings */

/* If there is an interface association descriptor then it will list
	 * the associated interfaces */
	struct usb_interface_assoc_descriptor *intf_assoc;

int minor;			/* minor number this interface is
					 * bound to */
	enum usb_interface_condition condition;		/* state of binding */
	unsigned sysfs_files_created:1;	/* the sysfs attributes exist */
	unsigned ep_devs_created:1;	/* endpoint "devices" exist */
	unsigned unregistering:1;	/* unregistration is in progress */
	unsigned needs_remote_wakeup:1;	/* driver requires remote wakeup */
	unsigned needs_altsetting0:1;	/* switch to altsetting 0 is pending */
	unsigned needs_binding:1;	/* needs delayed unbind/rebind */
	unsigned resetting_device:1;	/* true: bandwidth alloc after reset */
	unsigned authorized:1;		/* used for interface authorization */

struct device dev;		/* interface specific device info */
	struct device *usb_dev;
	struct work_struct reset_ws;	/* for resets in atomic context */
};
#define	to_usb_interface(d) container_of(d, struct usb_interface, dev)

static inline void *usb_get_intfdata(struct usb_interface *intf)
{
	return dev_get_drvdata(&intf->dev);
}

static inline void usb_set_intfdata(struct usb_interface *intf, void *data)
{
	dev_set_drvdata(&intf->dev, data);
}

struct usb_interface *usb_get_intf(struct usb_interface *intf);
void usb_put_intf(struct usb_interface *intf);

/* Hard limit */
#define USB_MAXENDPOINTS	30
/* this maximum is arbitrary */
#define USB_MAXINTERFACES	32
#define USB_MAXIADS		(USB_MAXINTERFACES/2)

bool usb_check_bulk_endpoints(
		const struct usb_interface *intf, const u8 *ep_addrs);
bool usb_check_int_endpoints(
		const struct usb_interface *intf, const u8 *ep_addrs);

/*
 * USB Resume Timer: Every Host controller driver should drive the resume
 * signalling on the bus for the amount of time defined by this macro.
 *
 * That way we will have a 'stable' behavior among all HCDs supported by Linux.
 *
 * Note that the USB Specification states we should drive resume for *at least*
 * 20 ms, but it doesn't give an upper bound. This creates two possible
 * situations which we want to avoid:
 *
 * (a) sometimes an msleep(20) might expire slightly before 20 ms, which causes
 * us to fail USB Electrical Tests, thus failing Certification
 *
 * (b) Some (many) devices actually need more than 20 ms of resume signalling,
 * and while we can argue that's against the USB Specification, we don't have
 * control over which devices a certification laboratory will be using for
 * certification. If CertLab uses a device which was tested against Windows and
 * that happens to have relaxed resume signalling rules, we might fall into
 * situations where we fail interoperability and electrical tests.
 *
 * In order to avoid both conditions, we're using a 40 ms resume timeout, which
 * should cope with both LPJ calibration errors and devices not following every
 * detail of the USB Specification.
 */
#define USB_RESUME_TIMEOUT	40 /* ms */

/**
 * struct usb_interface_cache - long-term representation of a device interface
 * @num_altsetting: number of altsettings defined.
 * @ref: reference counter.
 * @altsetting: variable-length array of interface structures, one for
 *	each alternate setting that may be selected.  Each one includes a
 *	set of endpoint configurations.  They will be in no particular order.
 *
 * These structures persist for the lifetime of a usb_device, unlike
 * struct usb_interface (which persists only as long as its configuration
 * is installed).  The altsetting arrays can be accessed through these
 * structures at any time, permitting comparison of configurations and
 * providing support for the /sys/kernel/debug/usb/devices pseudo-file.
 */
struct usb_interface_cache {
	unsigned num_altsetting;	/* number of alternate settings */
	struct kref ref;		/* reference counter */

/* variable-length array of alternate settings for this interface,
	 * stored in no particular order */
	struct usb_host_interface altsetting[0];
};
#define	ref_to_usb_interface_cache(r) \
		container_of(r, struct usb_interface_cache, ref)
#define	altsetting_to_usb_interface_cache(a) \
		container_of(a, struct usb_interface_cache, altsetting[0])

/**
 * struct usb_host_config - representation of a device's configuration
 * @desc: the device's configuration descriptor.
 * @string: pointer to the cached version of the iConfiguration string, if
 *	present for this configuration.
 * @intf_assoc: list of any interface association descriptors in this config
 * @interface: array of pointers to usb_interface structures, one for each
 *	interface in the configuration.  The number of interfaces is stored
 *	in desc.bNumInterfaces.  These pointers are valid only while the
 *	the configuration is active.
 * @intf_cache: array of pointers to usb_interface_cache structures, one
 *	for each interface in the configuration.  These structures exist
 *	for the entire life of the device.
 * @extra: pointer to buffer containing all extra descriptors associated
 *	with this configuration (those preceding the first interface
 *	descriptor).
 * @extralen: length of the extra descriptors buffer.
 *
 * USB devices may have multiple configurations, but only one can be active
 * at any time.  Each encapsulates a different operational environment;
 * for example, a dual-speed device would have separate configurations for
 * full-speed and high-speed operation.  The number of configurations
 * available is stored in the device descriptor as bNumConfigurations.
 *
 * A configuration can contain multiple interfaces.  Each corresponds to
 * a different function of the USB device, and all are available whenever
 * the configuration is active.  The USB standard says that interfaces
 * are supposed to be numbered from 0 to desc.bNumInterfaces-1, but a lot
 * of devices get this wrong.  In addition, the interface array is not
 * guaranteed to be sorted in numerical order.  Use usb_ifnum_to_if() to
 * look up an interface entry based on its number.
 *
 * Device drivers should not attempt to activate configurations.  The choice
 * of which configuration to install is a policy decision based on such
 * considerations as available power, functionality provided, and the user's
 * desires (expressed through userspace tools).  However, drivers can call
 * usb_reset_configuration() to reinitialize the current configuration and
 * all its interfaces.
 */
struct usb_host_config {
	struct usb_config_descriptor	desc;

char *string;		/* iConfiguration string, if present */

/* List of any Interface Association Descriptors in this
	 * configuration. */
	struct usb_interface_assoc_descriptor *intf_assoc[USB_MAXIADS];

/* the interfaces associated with this configuration,
	 * stored in no particular order */
	struct usb_interface *interface[USB_MAXINTERFACES];

/* Interface information available even when this is not the
	 * active configuration */
	struct usb_interface_cache *intf_cache[USB_MAXINTERFACES];

unsigned char *extra;   /* Extra descriptors */
	int extralen;
};

/* USB2.0 and USB3.0 device BOS descriptor set */
struct usb_host_bos {
	struct usb_bos_descriptor	*desc;

/* wireless cap descriptor is handled by wusb */
	struct usb_ext_cap_descriptor	*ext_cap;
	struct usb_ss_cap_descriptor	*ss_cap;
	struct usb_ssp_cap_descriptor	*ssp_cap;
	struct usb_ss_container_id_descriptor	*ss_id;
	struct usb_ptm_cap_descriptor	*ptm_cap;
};

int __usb_get_extra_descriptor(char *buffer, unsigned size,
	unsigned char type, void **ptr, size_t min);
#define usb_get_extra_descriptor(ifpoint, type, ptr) \
				__usb_get_extra_descriptor((ifpoint)->extra, \
				(ifpoint)->extralen, \
				type, (void **)ptr, sizeof(**(ptr)))

/* ----------------------------------------------------------------------- */

/* USB device number allocation bitmap */
struct usb_devmap {
	unsigned long devicemap[128 / (8*sizeof(unsigned long))];
};

/*
 * Allocated per bus (tree of devices) we have:
 */
struct usb_bus {
	struct device *controller;	/* host/master side hardware */
	struct device *sysdev;		/* as seen from firmware or bus */
	int busnum;			/* Bus number (in order of reg) */
	const char *bus_name;		/* stable id (PCI slot_name etc) */
	u8 uses_pio_for_control;	/*
					 * Does the host controller use PIO
					 * for control transfers?
					 */
	u8 otg_port;			/* 0, or number of OTG/HNP port */
	unsigned is_b_host:1;		/* true during some HNP roleswitches */
	unsigned b_hnp_enable:1;	/* OTG: did A-Host enable HNP? */
	unsigned no_stop_on_short:1;    /*
					 * Quirk: some controllers don't stop
					 * the ep queue on a short transfer
					 * with the URB_SHORT_NOT_OK flag set.
					 */
	unsigned no_sg_constraint:1;	/* no sg constraint */
	unsigned sg_tablesize;		/* 0 or largest number of sg list entries */

int devnum_next;		/* Next open device number in
					 * round-robin allocation */
	struct mutex devnum_next_mutex; /* devnum_next mutex */

struct usb_devmap devmap;	/* device address allocation map */
	struct usb_device *root_hub;	/* Root hub */
	struct usb_bus *hs_companion;	/* Companion EHCI bus, if any */

int bandwidth_allocated;	/* on this bus: how much of the time
					 * reserved for periodic (intr/iso)
					 * requests is used, on average?
					 * Units: microseconds/frame.
					 * Limits: Full/low speed reserve 90%,
					 * while high speed reserves 80%.
					 */
	int bandwidth_int_reqs;		/* number of Interrupt requests */
	int bandwidth_isoc_reqs;	/* number of Isoc. requests */

unsigned resuming_ports;	/* bit array: resuming root-hub ports */

#if defined(CONFIG_USB_MON) || defined(CONFIG_USB_MON_MODULE)
	struct mon_bus *mon_bus;	/* non-null when associated */
	int monitored;			/* non-zero when monitored */
#endif
};

struct usb_dev_state;

/* ----------------------------------------------------------------------- */

struct usb_tt;

enum usb_device_removable {
	USB_DEVICE_REMOVABLE_UNKNOWN = 0,
	USB_DEVICE_REMOVABLE,
	USB_DEVICE_FIXED,
};

enum usb_port_connect_type {
	USB_PORT_CONNECT_TYPE_UNKNOWN = 0,
	USB_PORT_CONNECT_TYPE_HOT_PLUG,
	USB_PORT_CONNECT_TYPE_HARD_WIRED,
	USB_PORT_NOT_USED,
};

/*
 * USB port quirks.
 */

/* For the given port, prefer the old (faster) enumeration scheme. */
#define USB_PORT_QUIRK_OLD_SCHEME	BIT(0)

/* Decrease TRSTRCY to 10ms during device enumeration. */
#define USB_PORT_QUIRK_FAST_ENUM	BIT(1)

/*
 * USB 2.0 Link Power Management (LPM) parameters.
 */
struct usb2_lpm_parameters {
	/* Best effort service latency indicate how long the host will drive
	 * resume on an exit from L1.
	 */
	unsigned int besl;

/* Timeout value in microseconds for the L1 inactivity (LPM) timer.
	 * When the timer counts to zero, the parent hub will initiate a LPM
	 * transition to L1.
	 */
	int timeout;
};

/*
 * USB 3.0 Link Power Management (LPM) parameters.
 *
 * PEL and SEL are USB 3.0 Link PM latencies for device-initiated LPM exit.
 * MEL is the USB 3.0 Link PM latency for host-initiated LPM exit.
 * All three are stored in nanoseconds.
 */
struct usb3_lpm_parameters {
	/*
	 * Maximum exit latency (MEL) for the host to send a packet to the
	 * device (either a Ping for isoc endpoints, or a data packet for
	 * interrupt endpoints), the hubs to decode the packet, and for all hubs
	 * in the path to transition the links to U0.
	 */
	unsigned int mel;
	/*
	 * Maximum exit latency for a device-initiated LPM transition to bring
	 * all links into U0.  Abbreviated as "PEL" in section 9.4.12 of the USB
	 * 3.0 spec, with no explanation of what "P" stands for.  "Path"?
	 */
	unsigned int pel;

/*
	 * The System Exit Latency (SEL) includes PEL, and three other
	 * latencies.  After a device initiates a U0 transition, it will take
	 * some time from when the device sends the ERDY to when it will finally
	 * receive the data packet.  Basically, SEL should be the worse-case
	 * latency from when a device starts initiating a U0 transition to when
	 * it will get data.
	 */
	unsigned int sel;
	/*
	 * The idle timeout value that is currently programmed into the parent
	 * hub for this device.  When the timer counts to zero, the parent hub
	 * will initiate an LPM transition to either U1 or U2.
	 */
	int timeout;
};

/**
 * struct usb_device - kernel's representation of a USB device
 * @devnum: device number; address on a USB bus
 * @devpath: device ID string for use in messages (e.g., /port/...)
 * @route: tree topology hex string for use with xHCI
 * @state: device state: configured, not attached, etc.
 * @speed: device speed: high/full/low (or error)
 * @rx_lanes: number of rx lanes in use, USB 3.2 adds dual-lane support
 * @tx_lanes: number of tx lanes in use, USB 3.2 adds dual-lane support
 * @tt: Transaction Translator info; used with low/full speed dev, highspeed hub
 * @ttport: device port on that tt hub
 * @toggle: one bit for each endpoint, with ([0] = IN, [1] = OUT) endpoints
 * @parent: our hub, unless we're the root
 * @bus: bus we're part of
 * @ep0: endpoint 0 data (default control pipe)
 * @dev: generic device interface
 * @descriptor: USB device descriptor
 * @bos: USB device BOS descriptor set
 * @config: all of the device's configs
 * @actconfig: the active configuration
 * @ep_in: array of IN endpoints
 * @ep_out: array of OUT endpoints
 * @rawdescriptors: raw descriptors for each config
 * @bus_mA: Current available from the bus
 * @portnum: parent port number (origin 1)
 * @level: number of USB hub ancestors
 * @devaddr: device address, XHCI: assigned by HW, others: same as devnum
 * @can_submit: URBs may be submitted
 * @persist_enabled:  USB_PERSIST enabled for this device
 * @reset_in_progress: the device is being reset
 * @have_langid: whether string_langid is valid
 * @authorized: policy has said we can use it;
 *	(user space) policy determines if we authorize this device to be
 *	used or not. By default, wired USB devices are authorized.
 *	WUSB devices are not, until we authorize them from user space.
 *	FIXME -- complete doc
 * @authenticated: Crypto authentication passed
 * @wusb: device is Wireless USB
 * @lpm_capable: device supports LPM
 * @usb2_hw_lpm_capable: device can perform USB2 hardware LPM
 * @usb2_hw_lpm_besl_capable: device can perform USB2 hardware BESL LPM
 * @usb2_hw_lpm_enabled: USB2 hardware LPM is enabled
 * @usb2_hw_lpm_allowed: Userspace allows USB 2.0 LPM to be enabled
 * @usb3_lpm_u1_enabled: USB3 hardware U1 LPM enabled
 * @usb3_lpm_u2_enabled: USB3 hardware U2 LPM enabled
 * @string_langid: language ID for strings
 * @product: iProduct string, if present (static)
 * @manufacturer: iManufacturer string, if present (static)
 * @serial: iSerialNumber string, if present (static)
 * @filelist: usbfs files that are open to this device
 * @maxchild: number of ports if hub
 * @quirks: quirks of the whole device
 * @urbnum: number of URBs submitted for the whole device
 * @active_duration: total time device is not suspended
 * @connect_time: time device was first connected
 * @do_remote_wakeup:  remote wakeup should be enabled
 * @reset_resume: needs reset instead of resume
 * @port_is_suspended: the upstream port is suspended (L2 or U3)
 * @wusb_dev: if this is a Wireless USB device, link to the WUSB
 *	specific data for the device.
 * @slot_id: Slot ID assigned by xHCI
 * @removable: Device can be physically removed from this port
 * @l1_params: best effor service latency for USB2 L1 LPM state, and L1 timeout.
 * @u1_params: exit latencies for USB3 U1 LPM state, and hub-initiated timeout.
 * @u2_params: exit latencies for USB3 U2 LPM state, and hub-initiated timeout.
 * @lpm_disable_count: Ref count used by usb_disable_lpm() and usb_enable_lpm()
 *	to keep track of the number of functions that require USB 3.0 Link Power
 *	Management to be disabled for this usb_device.  This count should only
 *	be manipulated by those functions, with the bandwidth_mutex is held.
 * @hub_delay: cached value consisting of:
 *		parent->hub_delay + wHubDelay + tTPTransmissionDelay (40ns)
 *
 *	Will be used as wValue for SetIsochDelay requests.
 *
 * Notes:
 * Usbcore drivers should not set usbdev->state directly.  Instead use
 * usb_set_device_state().
 */
struct usb_device {
	int		devnum;
	char		devpath[16];
	u32		route;
	enum usb_device_state	state;
	enum usb_device_speed	speed;
	unsigned int		rx_lanes;
	unsigned int		tx_lanes;

struct usb_tt	*tt;
	int		ttport;

unsigned int toggle[2];

struct usb_device *parent;
	struct usb_bus *bus;
	struct usb_host_endpoint ep0;

struct device dev;

struct usb_device_descriptor descriptor;
	struct usb_host_bos *bos;
	struct usb_host_config *config;

struct usb_host_config *actconfig;
	struct usb_host_endpoint *ep_in[16];
	struct usb_host_endpoint *ep_out[16];

char **rawdescriptors;

unsigned short bus_mA;
	u8 portnum;
	u8 level;
	u8 devaddr;

unsigned can_submit:1;
	unsigned persist_enabled:1;
	unsigned reset_in_progress:1;
	unsigned have_langid:1;
	unsigned authorized:1;
	unsigned authenticated:1;
	unsigned wusb:1;
	unsigned lpm_capable:1;
	unsigned usb2_hw_lpm_capable:1;
	unsigned usb2_hw_lpm_besl_capable:1;
	unsigned usb2_hw_lpm_enabled:1;
	unsigned usb2_hw_lpm_allowed:1;
	unsigned usb3_lpm_u1_enabled:1;
	unsigned usb3_lpm_u2_enabled:1;
	int string_langid;

/* static strings from the device */
	char *product;
	char *manufacturer;
	char *serial;

struct list_head filelist;

int maxchild;

u32 quirks;
	atomic_t urbnum;

unsigned long active_duration;

#ifdef CONFIG_PM
	unsigned long connect_time;

unsigned do_remote_wakeup:1;
	unsigned reset_resume:1;
	unsigned port_is_suspended:1;
#endif
	struct wusb_dev *wusb_dev;
	int slot_id;
	enum usb_device_removable removable;
	struct usb2_lpm_parameters l1_params;
	struct usb3_lpm_parameters u1_params;
	struct usb3_lpm_parameters u2_params;
	unsigned lpm_disable_count;

u16 hub_delay;
};
#define	to_usb_device(d) container_of(d, struct usb_device, dev)

static inline struct usb_device *interface_to_usbdev(struct usb_interface *intf)
{
	return to_usb_device(intf->dev.parent);
}

extern struct usb_device *usb_get_dev(struct usb_device *dev);
extern void usb_put_dev(struct usb_device *dev);
extern struct usb_device *usb_hub_find_child(struct usb_device *hdev,
	int port1);

/**
 * usb_hub_for_each_child - iterate over all child devices on the hub
 * @hdev:  USB device belonging to the usb hub
 * @port1: portnum associated with child device
 * @child: child device pointer
 */
#define usb_hub_for_each_child(hdev, port1, child) \
	for (port1 = 1,	child =	usb_hub_find_child(hdev, port1); \
			port1 <= hdev->maxchild; \
			child = usb_hub_find_child(hdev, ++port1)) \
		if (!child) continue; else

/* USB device locking */
#define usb_lock_device(udev)			device_lock(&(udev)->dev)
#define usb_unlock_device(udev)			device_unlock(&(udev)->dev)
#define usb_lock_device_interruptible(udev)	device_lock_interruptible(&(udev)->dev)
#define usb_trylock_device(udev)		device_trylock(&(udev)->dev)
extern int usb_lock_device_for_reset(struct usb_device *udev,
				     const struct usb_interface *iface);

/* USB port reset for device reinitialization */
extern int usb_reset_device(struct usb_device *dev);
extern void usb_queue_reset_device(struct usb_interface *dev);

#ifdef CONFIG_ACPI
extern int usb_acpi_set_power_state(struct usb_device *hdev, int index,
	bool enable);
extern bool usb_acpi_power_manageable(struct usb_device *hdev, int index);
extern int usb_acpi_port_lpm_incapable(struct usb_device *hdev, int index);
#else
static inline int usb_acpi_set_power_state(struct usb_device *hdev, int index,
	bool enable) { return 0; }
static inline bool usb_acpi_power_manageable(struct usb_device *hdev, int index)
	{ return true; }
static inline int usb_acpi_port_lpm_incapable(struct usb_device *hdev, int index)
	{ return 0; }
#endif

/* USB autosuspend and autoresume */
#ifdef CONFIG_PM
extern void usb_enable_autosuspend(struct usb_device *udev);
extern void usb_disable_autosuspend(struct usb_device *udev);

extern int usb_autopm_get_interface(struct usb_interface *intf);
extern void usb_autopm_put_interface(struct usb_interface *intf);
extern int usb_autopm_get_interface_async(struct usb_interface *intf);
extern void usb_autopm_put_interface_async(struct usb_interface *intf);
extern void usb_autopm_get_interface_no_resume(struct usb_interface *intf);
extern void usb_autopm_put_interface_no_suspend(struct usb_interface *intf);

static inline void usb_mark_last_busy(struct usb_device *udev)
{
	pm_runtime_mark_last_busy(&udev->dev);
}

#else

static inline int usb_enable_autosuspend(struct usb_device *udev)
{ return 0; }
static inline int usb_disable_autosuspend(struct usb_device *udev)
{ return 0; }

static inline int usb_autopm_get_interface(struct usb_interface *intf)
{ return 0; }
static inline int usb_autopm_get_interface_async(struct usb_interface *intf)
{ return 0; }

static inline void usb_autopm_put_interface(struct usb_interface *intf)
{ }
static inline void usb_autopm_put_interface_async(struct usb_interface *intf)
{ }
static inline void usb_autopm_get_interface_no_resume(
		struct usb_interface *intf)
{ }
static inline void usb_autopm_put_interface_no_suspend(
		struct usb_interface *intf)
{ }
static inline void usb_mark_last_busy(struct usb_device *udev)
{ }
#endif

extern int usb_disable_lpm(struct usb_device *udev);
extern void usb_enable_lpm(struct usb_device *udev);
/* Same as above, but these functions lock/unlock the bandwidth_mutex. */
extern int usb_unlocked_disable_lpm(struct usb_device *udev);
extern void usb_unlocked_enable_lpm(struct usb_device *udev);

extern int usb_disable_ltm(struct usb_device *udev);
extern void usb_enable_ltm(struct usb_device *udev);

static inline bool usb_device_supports_ltm(struct usb_device *udev)
{
	if (udev->speed < USB_SPEED_SUPER || !udev->bos || !udev->bos->ss_cap)
		return false;
	return udev->bos->ss_cap->bmAttributes & USB_LTM_SUPPORT;
}

static inline bool usb_device_no_sg_constraint(struct usb_device *udev)
{
	return udev && udev->bus && udev->bus->no_sg_constraint;
}

/*-------------------------------------------------------------------------*/

/* for drivers using iso endpoints */
extern int usb_get_current_frame_number(struct usb_device *usb_dev);

/* Sets up a group of bulk endpoints to support multiple stream IDs. */
extern int usb_alloc_streams(struct usb_interface *interface,
		struct usb_host_endpoint **eps, unsigned int num_eps,
		unsigned int num_streams, gfp_t mem_flags);

/* Reverts a group of bulk endpoints back to not using stream IDs. */
extern int usb_free_streams(struct usb_interface *interface,
		struct usb_host_endpoint **eps, unsigned int num_eps,
		gfp_t mem_flags);

/* used these for multi-interface device registration */
extern int usb_driver_claim_interface(struct usb_driver *driver,
			struct usb_interface *iface, void *priv);

/**
 * usb_interface_claimed - returns true iff an interface is claimed
 * @iface: the interface being checked
 *
 * Return: %true (nonzero) iff the interface is claimed, else %false
 * (zero).
 *
 * Note:
 * Callers must own the driver model's usb bus readlock.  So driver
 * probe() entries don't need extra locking, but other call contexts
 * may need to explicitly claim that lock.
 *
 */
static inline int usb_interface_claimed(struct usb_interface *iface)
{
	return (iface->dev.driver != NULL);
}

extern void usb_driver_release_interface(struct usb_driver *driver,
			struct usb_interface *iface);
const struct usb_device_id *usb_match_id(struct usb_interface *interface,
					 const struct usb_device_id *id);
extern int usb_match_one_id(struct usb_interface *interface,
			    const struct usb_device_id *id);

extern int usb_for_each_dev(void *data, int (*fn)(struct usb_device *, void *));
extern struct usb_interface *usb_find_interface(struct usb_driver *drv,
		int minor);
extern struct usb_interface *usb_ifnum_to_if(const struct usb_device *dev,
		unsigned ifnum);
extern struct usb_host_interface *usb_altnum_to_altsetting(
		const struct usb_interface *intf, unsigned int altnum);
extern struct usb_host_interface *usb_find_alt_setting(
		struct usb_host_config *config,
		unsigned int iface_num,
		unsigned int alt_num);

/* port claiming functions */
int usb_hub_claim_port(struct usb_device *hdev, unsigned port1,
		struct usb_dev_state *owner);
int usb_hub_release_port(struct usb_device *hdev, unsigned port1,
		struct usb_dev_state *owner);

/**
 * usb_make_path - returns stable device path in the usb tree
 * @dev: the device whose path is being constructed
 * @buf: where to put the string
 * @size: how big is "buf"?
 *
 * Return: Length of the string (> 0) or negative if size was too small.
 *
 * Note:
 * This identifier is intended to be "stable", reflecting physical paths in
 * hardware such as physical bus addresses for host controllers or ports on
 * USB hubs.  That makes it stay the same until systems are physically
 * reconfigured, by re-cabling a tree of USB devices or by moving USB host
 * controllers.  Adding and removing devices, including virtual root hubs
 * in host controller driver modules, does not change these path identifiers;
 * neither does rebooting or re-enumerating.  These are more useful identifiers
 * than changeable ("unstable") ones like bus numbers or device addresses.
 *
 * With a partial exception for devices connected to USB 2.0 root hubs, these
 * identifiers are also predictable.  So long as the device tree isn't changed,
 * plugging any USB device into a given hub port always gives it the same path.
 * Because of the use of "companion" controllers, devices connected to ports on
 * USB 2.0 root hubs (EHCI host controllers) will get one path ID if they are
 * high speed, and a different one if they are full or low speed.
 */
static inline int usb_make_path(struct usb_device *dev, char *buf, size_t size)
{
	int actual;
	actual = snprintf(buf, size, "usb-%s-%s", dev->bus->bus_name,
			  dev->devpath);
	return (actual >= (int)size) ? -1 : actual;
}

/*-------------------------------------------------------------------------*/

#define USB_DEVICE_ID_MATCH_DEVICE \
		(USB_DEVICE_ID_MATCH_VENDOR | USB_DEVICE_ID_MATCH_PRODUCT)
#define USB_DEVICE_ID_MATCH_DEV_RANGE \
		(USB_DEVICE_ID_MATCH_DEV_LO | USB_DEVICE_ID_MATCH_DEV_HI)
#define USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION \
		(USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_DEV_RANGE)
#define USB_DEVICE_ID_MATCH_DEV_INFO \
		(USB_DEVICE_ID_MATCH_DEV_CLASS | \
		USB_DEVICE_ID_MATCH_DEV_SUBCLASS | \
		USB_DEVICE_ID_MATCH_DEV_PROTOCOL)
#define USB_DEVICE_ID_MATCH_INT_INFO \
		(USB_DEVICE_ID_MATCH_INT_CLASS | \
		USB_DEVICE_ID_MATCH_INT_SUBCLASS | \
		USB_DEVICE_ID_MATCH_INT_PROTOCOL)

/**
 * USB_DEVICE - macro used to describe a specific usb device
 * @vend: the 16 bit USB Vendor ID
 * @prod: the 16 bit USB Product ID
 *
 * This macro is used to create a struct usb_device_id that matches a
 * specific device.
 */
#define USB_DEVICE(vend, prod) \
	.match_flags = USB_DEVICE_ID_MATCH_DEVICE, \
	.idVendor = (vend), \
	.idProduct = (prod)
/**
 * USB_DEVICE_VER - describe a specific usb device with a version range
 * @vend: the 16 bit USB Vendor ID
 * @prod: the 16 bit USB Product ID
 * @lo: the bcdDevice_lo value
 * @hi: the bcdDevice_hi value
 *
 * This macro is used to create a struct usb_device_id that matches a
 * specific device, with a version range.
 */
#define USB_DEVICE_VER(vend, prod, lo, hi) \
	.match_flags = USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION, \
	.idVendor = (vend), \
	.idProduct = (prod), \
	.bcdDevice_lo = (lo), \
	.bcdDevice_hi = (hi)

/**
 * USB_DEVICE_INTERFACE_CLASS - describe a usb device with a specific interface class
 * @vend: the 16 bit USB Vendor ID
 * @prod: the 16 bit USB Product ID
 * @cl: bInterfaceClass value
 *
 * This macro is used to create a struct usb_device_id that matches a
 * specific interface class of devices.
 */
#define USB_DEVICE_INTERFACE_CLASS(vend, prod, cl) \
	.match_flags = USB_DEVICE_ID_MATCH_DEVICE | \
		       USB_DEVICE_ID_MATCH_INT_CLASS, \
	.idVendor = (vend), \
	.idProduct = (prod), \
	.bInterfaceClass = (cl)

/**
 * USB_DEVICE_INTERFACE_PROTOCOL - describe a usb device with a specific interface protocol
 * @vend: the 16 bit USB Vendor ID
 * @prod: the 16 bit USB Product ID
 * @pr: bInterfaceProtocol value
 *
 * This macro is used to create a struct usb_device_id that matches a
 * specific interface protocol of devices.
 */
#define USB_DEVICE_INTERFACE_PROTOCOL(vend, prod, pr) \
	.match_flags = USB_DEVICE_ID_MATCH_DEVICE | \
		       USB_DEVICE_ID_MATCH_INT_PROTOCOL, \
	.idVendor = (vend), \
	.idProduct = (prod), \
	.bInterfaceProtocol = (pr)

/**
 * USB_DEVICE_INTERFACE_NUMBER - describe a usb device with a specific interface number
 * @vend: the 16 bit USB Vendor ID
 * @prod: the 16 bit USB Product ID
 * @num: bInterfaceNumber value
 *
 * This macro is used to create a struct usb_device_id that matches a
 * specific interface number of devices.
 */
#define USB_DEVICE_INTERFACE_NUMBER(vend, prod, num) \
	.match_flags = USB_DEVICE_ID_MATCH_DEVICE | \
		       USB_DEVICE_ID_MATCH_INT_NUMBER, \
	.idVendor = (vend), \
	.idProduct = (prod), \
	.bInterfaceNumber = (num)

/**
 * USB_DEVICE_INFO - macro used to describe a class of usb devices
 * @cl: bDeviceClass value
 * @sc: bDeviceSubClass value
 * @pr: bDeviceProtocol value
 *
 * This macro is used to create a struct usb_device_id that matches a
 * specific class of devices.
 */
#define USB_DEVICE_INFO(cl, sc, pr) \
	.match_flags = USB_DEVICE_ID_MATCH_DEV_INFO, \
	.bDeviceClass = (cl), \
	.bDeviceSubClass = (sc), \
	.bDeviceProtocol = (pr)

/**
 * USB_INTERFACE_INFO - macro used to describe a class of usb interfaces
 * @cl: bInterfaceClass value
 * @sc: bInterfaceSubClass value
 * @pr: bInterfaceProtocol value
 *
 * This macro is used to create a struct usb_device_id that matches a
 * specific class of interfaces.
 */
#define USB_INTERFACE_INFO(cl, sc, pr) \
	.match_flags = USB_DEVICE_ID_MATCH_INT_INFO, \
	.bInterfaceClass = (cl), \
	.bInterfaceSubClass = (sc), \
	.bInterfaceProtocol = (pr)

/**
 * USB_DEVICE_AND_INTERFACE_INFO - describe a specific usb device with a class of usb interfaces
 * @vend: the 16 bit USB Vendor ID
 * @prod: the 16 bit USB Product ID
 * @cl: bInterfaceClass value
 * @sc: bInterfaceSubClass value
 * @pr: bInterfaceProtocol value
 *
 * This macro is used to create a struct usb_device_id that matches a
 * specific device with a specific class of interfaces.
 *
 * This is especially useful when explicitly matching devices that have
 * vendor specific bDeviceClass values, but standards-compliant interfaces.
 */
#define USB_DEVICE_AND_INTERFACE_INFO(vend, prod, cl, sc, pr) \
	.match_flags = USB_DEVICE_ID_MATCH_INT_INFO \
		| USB_DEVICE_ID_MATCH_DEVICE, \
	.idVendor = (vend), \
	.idProduct = (prod), \
	.bInterfaceClass = (cl), \
	.bInterfaceSubClass = (sc), \
	.bInterfaceProtocol = (pr)

/**
 * USB_VENDOR_AND_INTERFACE_INFO - describe a specific usb vendor with a class of usb interfaces
 * @vend: the 16 bit USB Vendor ID
 * @cl: bInterfaceClass value
 * @sc: bInterfaceSubClass value
 * @pr: bInterfaceProtocol value
 *
 * This macro is used to create a struct usb_device_id that matches a
 * specific vendor with a specific class of interfaces.
 *
 * This is especially useful when explicitly matching devices that have
 * vendor specific bDeviceClass values, but standards-compliant interfaces.
 */
#define USB_VENDOR_AND_INTERFACE_INFO(vend, cl, sc, pr) \
	.match_flags = USB_DEVICE_ID_MATCH_INT_INFO \
		| USB_DEVICE_ID_MATCH_VENDOR, \
	.idVendor = (vend), \
	.bInterfaceClass = (cl), \
	.bInterfaceSubClass = (sc), \
	.bInterfaceProtocol = (pr)

/* ----------------------------------------------------------------------- */

/* Stuff for dynamic usb ids */
struct usb_dynids {
	spinlock_t lock;
	struct list_head list;
};

struct usb_dynid {
	struct list_head node;
	struct usb_device_id id;
};

extern ssize_t usb_store_new_id(struct usb_dynids *dynids,
				const struct usb_device_id *id_table,
				struct device_driver *driver,
				const char *buf, size_t count);

extern ssize_t usb_show_dynids(struct usb_dynids *dynids, char *buf);

/**
 * struct usbdrv_wrap - wrapper for driver-model structure
 * @driver: The driver-model core driver structure.
 * @for_devices: Non-zero for device drivers, 0 for interface drivers.
 */
struct usbdrv_wrap {
	struct device_driver driver;
	int for_devices;
};

/**
 * struct usb_driver - identifies USB interface driver to usbcore
 * @name: The driver name should be unique among USB drivers,
 *	and should normally be the same as the module name.
 * @probe: Called to see if the driver is willing to manage a particular
 *	interface on a device.  If it is, probe returns zero and uses
 *	usb_set_intfdata() to associate driver-specific data with the
 *	interface.  It may also use usb_set_interface() to specify the
 *	appropriate altsetting.  If unwilling to manage the interface,
 *	return -ENODEV, if genuine IO errors occurred, an appropriate
 *	negative errno value.
 * @disconnect: Called when the interface is no longer accessible, usually
 *	because its device has been (or is being) disconnected or the
 *	driver module is being unloaded.
 * @unlocked_ioctl: Used for drivers that want to talk to userspace through
 *	the "usbfs" filesystem.  This lets devices provide ways to
 *	expose information to user space regardless of where they
 *	do (or don't) show up otherwise in the filesystem.
 * @suspend: Called when the device is going to be suspended by the
 *	system either from system sleep or runtime suspend context. The
 *	return value will be ignored in system sleep context, so do NOT
 *	try to continue using the device if suspend fails in this case.
 *	Instead, let the resume or reset-resume routine recover from
 *	the failure.
 * @resume: Called when the device is being resumed by the system.
 * @reset_resume: Called when the suspended device has been reset instead
 *	of being resumed.
 * @pre_reset: Called by usb_reset_device() when the device is about to be
 *	reset.  This routine must not return until the driver has no active
 *	URBs for the device, and no more URBs may be submitted until the
 *	post_reset method is called.
 * @post_reset: Called by usb_reset_device() after the device
 *	has been reset
 * @id_table: USB drivers use ID table to support hotplugging.
 *	Export this with MODULE_DEVICE_TABLE(usb,...).  This must be set
 *	or your driver's probe function will never get called.
 * @dev_groups: Attributes attached to the device that will be created once it
 *	is bound to the driver.
 * @dynids: used internally to hold the list of dynamically added device
 *	ids for this driver.
 * @drvwrap: Driver-model core structure wrapper.
 * @no_dynamic_id: if set to 1, the USB core will not allow dynamic ids to be
 *	added to this driver by preventing the sysfs file from being created.
 * @supports_autosuspend: if set to 0, the USB core will not allow autosuspend
 *	for interfaces bound to this driver.
 * @soft_unbind: if set to 1, the USB core will not kill URBs and disable
 *	endpoints before calling the driver's disconnect method.
 * @disable_hub_initiated_lpm: if set to 1, the USB core will not allow hubs
 *	to initiate lower power link state transitions when an idle timeout
 *	occurs.  Device-initiated USB 3.0 link PM will still be allowed.
 *
 * USB interface drivers must provide a name, probe() and disconnect()
 * methods, and an id_table.  Other driver fields are optional.
 *
 * The id_table is used in hotplugging.  It holds a set of descriptors,
 * and specialized data may be associated with each entry.  That table
 * is used by both user and kernel mode hotplugging support.
 *
 * The probe() and disconnect() methods are called in a context where
 * they can sleep, but they should avoid abusing the privilege.  Most
 * work to connect to a device should be done when the device is opened,
 * and undone at the last close.  The disconnect code needs to address
 * concurrency issues with respect to open() and close() methods, as
 * well as forcing all pending I/O requests to complete (by unlinking
 * them as necessary, and blocking until the unlinks complete).
 */
struct usb_driver {
	const char *name;

int (*probe) (struct usb_interface *intf,
		      const struct usb_device_id *id);

void (*disconnect) (struct usb_interface *intf);

int (*unlocked_ioctl) (struct usb_interface *intf, unsigned int code,
			void *buf);

int (*suspend) (struct usb_interface *intf, pm_message_t message);
	int (*resume) (struct usb_interface *intf);
	int (*reset_resume)(struct usb_interface *intf);

int (*pre_reset)(struct usb_interface *intf);
	int (*post_reset)(struct usb_interface *intf);

const struct usb_device_id *id_table;
	const struct attribute_group **dev_groups;

struct usb_dynids dynids;
	struct usbdrv_wrap drvwrap;
	unsigned int no_dynamic_id:1;
	unsigned int supports_autosuspend:1;
	unsigned int disable_hub_initiated_lpm:1;
	unsigned int soft_unbind:1;
};
#define	to_usb_driver(d) container_of(d, struct usb_driver, drvwrap.driver)

/**
 * struct usb_device_driver - identifies USB device driver to usbcore
 * @name: The driver name should be unique among USB drivers,
 *	and should normally be the same as the module name.
 * @probe: Called to see if the driver is willing to manage a particular
 *	device.  If it is, probe returns zero and uses dev_set_drvdata()
 *	to associate driver-specific data with the device.  If unwilling
 *	to manage the device, return a negative errno value.
 * @disconnect: Called when the device is no longer accessible, usually
 *	because it has been (or is being) disconnected or the driver's
 *	module is being unloaded.
 * @suspend: Called when the device is going to be suspended by the system.
 * @resume: Called when the device is being resumed by the system.
 * @dev_groups: Attributes attached to the device that will be created once it
 *	is bound to the driver.
 * @drvwrap: Driver-model core structure wrapper.
 * @supports_autosuspend: if set to 0, the USB core will not allow autosuspend
 *	for devices bound to this driver.
 *
 * USB drivers must provide all the fields listed above except drvwrap.
 */
struct usb_device_driver {
	const char *name;

int (*probe) (struct usb_device *udev);
	void (*disconnect) (struct usb_device *udev);

int (*suspend) (struct usb_device *udev, pm_message_t message);
	int (*resume) (struct usb_device *udev, pm_message_t message);
	const struct attribute_group **dev_groups;
	struct usbdrv_wrap drvwrap;
	unsigned int supports_autosuspend:1;
};
#define	to_usb_device_driver(d) container_of(d, struct usb_device_driver, \
		drvwrap.driver)

extern struct bus_type usb_bus_type;

/**
 * struct usb_class_driver - identifies a USB driver that wants to use the USB major number
 * @name: the usb class device name for this driver.  Will show up in sysfs.
 * @devnode: Callback to provide a naming hint for a possible
 *	device node to create.
 * @fops: pointer to the struct file_operations of this driver.
 * @minor_base: the start of the minor range for this driver.
 *
 * This structure is used for the usb_register_dev() and
 * usb_deregister_dev() functions, to consolidate a number of the
 * parameters used for them.
 */
struct usb_class_driver {
	char *name;
	char *(*devnode)(struct device *dev, umode_t *mode);
	const struct file_operations *fops;
	int minor_base;
};

/*
 * use these in module_init()/module_exit()
 * and don't forget MODULE_DEVICE_TABLE(usb, ...)
 */
extern int usb_register_driver(struct usb_driver *, struct module *,
			       const char *);

/* use a define to avoid include chaining to get THIS_MODULE & friends */
#define usb_register(driver) \
	usb_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)

extern void usb_deregister(struct usb_driver *);

/**
 * module_usb_driver() - Helper macro for registering a USB driver
 * @__usb_driver: usb_driver struct
 *
 * Helper macro for USB drivers which do not do anything special in module
 * init/exit. This eliminates a lot of boilerplate. Each module may only
 * use this macro once, and calling it replaces module_init() and module_exit()
 */
#define module_usb_driver(__usb_driver) \
	module_driver(__usb_driver, usb_register, \
		       usb_deregister)

extern int usb_register_device_driver(struct usb_device_driver *,
			struct module *);
extern void usb_deregister_device_driver(struct usb_device_driver *);

extern int usb_register_dev(struct usb_interface *intf,
			    struct usb_class_driver *class_driver);
extern void usb_deregister_dev(struct usb_interface *intf,
			       struct usb_class_driver *class_driver);

extern int usb_disabled(void);

/* ----------------------------------------------------------------------- */

/*
 * URB support, for asynchronous request completions
 */

/*
 * urb->transfer_flags:
 *
 * Note: URB_DIR_IN/OUT is automatically set in usb_submit_urb().
 */
#define URB_SHORT_NOT_OK	0x0001	/* report short reads as errors */
#define URB_ISO_ASAP		0x0002	/* iso-only; use the first unexpired
					 * slot in the schedule */
#define URB_NO_TRANSFER_DMA_MAP	0x0004	/* urb->transfer_dma valid on submit */
#define URB_ZERO_PACKET		0x0040	/* Finish bulk OUT with short packet */
#define URB_NO_INTERRUPT	0x0080	/* HINT: no non-error interrupt
					 * needed */
#define URB_FREE_BUFFER		0x0100	/* Free transfer buffer with the URB */

/* The following flags are used internally by usbcore and HCDs */
#define URB_DIR_IN		0x0200	/* Transfer from device to host */
#define URB_DIR_OUT		0
#define URB_DIR_MASK		URB_DIR_IN

#define URB_DMA_MAP_SINGLE	0x00010000	/* Non-scatter-gather mapping */
#define URB_DMA_MAP_PAGE	0x00020000	/* HCD-unsupported S-G */
#define URB_DMA_MAP_SG		0x00040000	/* HCD-supported S-G */
#define URB_MAP_LOCAL		0x00080000	/* HCD-local-memory mapping */
#define URB_SETUP_MAP_SINGLE	0x00100000	/* Setup packet DMA mapped */
#define URB_SETUP_MAP_LOCAL	0x00200000	/* HCD-local setup packet */
#define URB_DMA_SG_COMBINED	0x00400000	/* S-G entries were combined */
#define URB_ALIGNED_TEMP_BUFFER	0x00800000	/* Temp buffer was alloc'd */

struct usb_iso_packet_descriptor {
	unsigned int offset;
	unsigned int length;		/* expected length */
	unsigned int actual_length;
	int status;
};

struct urb;

struct usb_anchor {
	struct list_head urb_list;
	wait_queue_head_t wait;
	spinlock_t lock;
	atomic_t suspend_wakeups;
	unsigned int poisoned:1;
};

static inline void init_usb_anchor(struct usb_anchor *anchor)
{
	memset(anchor, 0, sizeof(*anchor));
	INIT_LIST_HEAD(&anchor->urb_list);
	init_waitqueue_head(&anchor->wait);
	spin_lock_init(&anchor->lock);
}

typedef void (*usb_complete_t)(struct urb *);

/**
 * struct urb - USB Request Block
 * @urb_list: For use by current owner of the URB.
 * @anchor_list: membership in the list of an anchor
 * @anchor: to anchor URBs to a common mooring
 * @ep: Points to the endpoint's data structure.  Will eventually
 *	replace @pipe.
 * @pipe: Holds endpoint number, direction, type, and more.
 *	Create these values with the eight macros available;
 *	usb_{snd,rcv}TYPEpipe(dev,endpoint), where the TYPE is "ctrl"
 *	(control), "bulk", "int" (interrupt), or "iso" (isochronous).
 *	For example usb_sndbulkpipe() or usb_rcvintpipe().  Endpoint
 *	numbers range from zero to fifteen.  Note that "in" endpoint two
 *	is a different endpoint (and pipe) from "out" endpoint two.
 *	The current configuration controls the existence, type, and
 *	maximum packet size of any given endpoint.
 * @stream_id: the endpoint's stream ID for bulk streams
 * @dev: Identifies the USB device to perform the request.
 * @status: This is read in non-iso completion functions to get the
 *	status of the particular request.  ISO requests only use it
 *	to tell whether the URB was unlinked; detailed status for
 *	each frame is in the fields of the iso_frame-desc.
 * @transfer_flags: A variety of flags may be used to affect how URB
 *	submission, unlinking, or operation are handled.  Different
 *	kinds of URB can use different flags.
 * @transfer_buffer:  This identifies the buffer to (or from) which the I/O
 *	request will be performed unless URB_NO_TRANSFER_DMA_MAP is set
 *	(however, do not leave garbage in transfer_buffer even then).
 *	This buffer must be suitable for DMA; allocate it with
 *	kmalloc() or equivalent.  For transfers to "in" endpoints, contents
 *	of this buffer will be modified.  This buffer is used for the data
 *	stage of control transfers.
 * @transfer_dma: When transfer_flags includes URB_NO_TRANSFER_DMA_MAP,
 *	the device driver is saying that it provided this DMA address,
 *	which the host controller driver should use in preference to the
 *	transfer_buffer.
 * @sg: scatter gather buffer list, the buffer size of each element in
 * 	the list (except the last) must be divisible by the endpoint's
 * 	max packet size if no_sg_constraint isn't set in 'struct usb_bus'
 * @num_mapped_sgs: (internal) number of mapped sg entries
 * @num_sgs: number of entries in the sg list
 * @transfer_buffer_length: How big is transfer_buffer.  The transfer may
 *	be broken up into chunks according to the current maximum packet
 *	size for the endpoint, which is a function of the configuration
 *	and is encoded in the pipe.  When the length is zero, neither
 *	transfer_buffer nor transfer_dma is used.
 * @actual_length: This is read in non-iso completion functions, and
 *	it tells how many bytes (out of transfer_buffer_length) were
 *	transferred.  It will normally be the same as requested, unless
 *	either an error was reported or a short read was performed.
 *	The URB_SHORT_NOT_OK transfer flag may be used to make such
 *	short reads be reported as errors.
 * @setup_packet: Only used for control transfers, this points to eight bytes
 *	of setup data.  Control transfers always start by sending this data
 *	to the device.  Then transfer_buffer is read or written, if needed.
 * @setup_dma: DMA pointer for the setup packet.  The caller must not use
 *	this field; setup_packet must point to a valid buffer.
 * @start_frame: Returns the initial frame for isochronous transfers.
 * @number_of_packets: Lists the number of ISO transfer buffers.
 * @interval: Specifies the polling interval for interrupt or isochronous
 *	transfers.  The units are frames (milliseconds) for full and low
 *	speed devices, and microframes (1/8 millisecond) for highspeed
 *	and SuperSpeed devices.
 * @error_count: Returns the number of ISO transfers that reported errors.
 * @context: For use in completion functions.  This normally points to
 *	request-specific driver context.
 * @complete: Completion handler. This URB is passed as the parameter to the
 *	completion function.  The completion function may then do what
 *	it likes with the URB, including resubmitting or freeing it.
 * @iso_frame_desc: Used to provide arrays of ISO transfer buffers and to
 *	collect the transfer status for each buffer.
 *
 * This structure identifies USB transfer requests.  URBs must be allocated by
 * calling usb_alloc_urb() and freed with a call to usb_free_urb().
 * Initialization may be done using various usb_fill_*_urb() functions.  URBs
 * are submitted using usb_submit_urb(), and pending requests may be canceled
 * using usb_unlink_urb() or usb_kill_urb().
 *
 * Data Transfer Buffers:
 *
 * Normally drivers provide I/O buffers allocated with kmalloc() or otherwise
 * taken from the general page pool.  That is provided by transfer_buffer
 * (control requests also use setup_packet), and host controller drivers
 * perform a dma mapping (and unmapping) for each buffer transferred.  Those
 * mapping operations can be expensive on some platforms (perhaps using a dma
 * bounce buffer or talking to an IOMMU),
 * although they're cheap on commodity x86 and ppc hardware.
 *
 * Alternatively, drivers may pass the URB_NO_TRANSFER_DMA_MAP transfer flag,
 * which tells the host controller driver that no such mapping is needed for
 * the transfer_buffer since
 * the device driver is DMA-aware.  For example, a device driver might
 * allocate a DMA buffer with usb_alloc_coherent() or call usb_buffer_map().
 * When this transfer flag is provided, host controller drivers will
 * attempt to use the dma address found in the transfer_dma
 * field rather than determining a dma address themselves.
 *
 * Note that transfer_buffer must still be set if the controller
 * does not support DMA (as indicated by hcd_uses_dma()) and when talking
 * to root hub. If you have to trasfer between highmem zone and the device
 * on such controller, create a bounce buffer or bail out with an error.
 * If transfer_buffer cannot be set (is in highmem) and the controller is DMA
 * capable, assign NULL to it, so that usbmon knows not to use the value.
 * The setup_packet must always be set, so it cannot be located in highmem.
 *
 * Initialization:
 *
 * All URBs submitted must initialize the dev, pipe, transfer_flags (may be
 * zero), and complete fields.  All URBs must also initialize
 * transfer_buffer and transfer_buffer_length.  They may provide the
 * URB_SHORT_NOT_OK transfer flag, indicating that short reads are
 * to be treated as errors; that flag is invalid for write requests.
 *
 * Bulk URBs may
 * use the URB_ZERO_PACKET transfer flag, indicating that bulk OUT transfers
 * should always terminate with a short packet, even if it means adding an
 * extra zero length packet.
 *
 * Control URBs must provide a valid pointer in the setup_packet field.
 * Unlike the transfer_buffer, the setup_packet may not be mapped for DMA
 * beforehand.
 *
 * Interrupt URBs must provide an interval, saying how often (in milliseconds
 * or, for highspeed devices, 125 microsecond units)
 * to poll for transfers.  After the URB has been submitted, the interval
 * field reflects how the transfer was actually scheduled.
 * The polling interval may be more frequent than requested.
 * For example, some controllers have a maximum interval of 32 milliseconds,
 * while others support intervals of up to 1024 milliseconds.
 * Isochronous URBs also have transfer intervals.  (Note that for isochronous
 * endpoints, as well as high speed interrupt endpoints, the encoding of
 * the transfer interval in the endpoint descriptor is logarithmic.
 * Device drivers must convert that value to linear units themselves.)
 *
 * If an isochronous endpoint queue isn't already running, the host
 * controller will schedule a new URB to start as soon as bandwidth
 * utilization allows.  If the queue is running then a new URB will be
 * scheduled to start in the first transfer slot following the end of the
 * preceding URB, if that slot has not already expired.  If the slot has
 * expired (which can happen when IRQ delivery is delayed for a long time),
 * the scheduling behavior depends on the URB_ISO_ASAP flag.  If the flag
 * is clear then the URB will be scheduled to start in the expired slot,
 * implying that some of its packets will not be transferred; if the flag
 * is set then the URB will be scheduled in the first unexpired slot,
 * breaking the queue's synchronization.  Upon URB completion, the
 * start_frame field will be set to the (micro)frame number in which the
 * transfer was scheduled.  Ranges for frame counter values are HC-specific
 * and can go from as low as 256 to as high as 65536 frames.
 *
 * Isochronous URBs have a different data transfer model, in part because
 * the quality of service is only "best effort".  Callers provide specially
 * allocated URBs, with number_of_packets worth of iso_frame_desc structures
 * at the end.  Each such packet is an individual ISO transfer.  Isochronous
 * URBs are normally queued, submitted by drivers to arrange that
 * transfers are at least double buffered, and then explicitly resubmitted
 * in completion handlers, so
 * that data (such as audio or video) streams at as constant a rate as the
 * host controller scheduler can support.
 *
 * Completion Callbacks:
 *
 * The completion callback is made in_interrupt(), and one of the first
 * things that a completion handler should do is check the status field.
 * The status field is provided for all URBs.  It is used to report
 * unlinked URBs, and status for all non-ISO transfers.  It should not
 * be examined before the URB is returned to the completion handler.
 *
 * The context field is normally used to link URBs back to the relevant
 * driver or request state.
 *
 * When the completion callback is invoked for non-isochronous URBs, the
 * actual_length field tells how many bytes were transferred.  This field
 * is updated even when the URB terminated with an error or was unlinked.
 *
 * ISO transfer status is reported in the status and actual_length fields
 * of the iso_frame_desc array, and the number of errors is reported in
 * error_count.  Completion callbacks for ISO transfers will normally
 * (re)submit URBs to ensure a constant transfer rate.
 *
 * Note that even fields marked "public" should not be touched by the driver
 * when the urb is owned by the hcd, that is, since the call to
 * usb_submit_urb() till the entry into the completion routine.
 */
struct urb {
	/* private: usb core and host controller only fields in the urb */
	struct kref kref;		/* reference count of the URB */
	int unlinked;			/* unlink error code */
	void *hcpriv;			/* private data for host controller */
	atomic_t use_count;		/* concurrent submissions counter */
	atomic_t reject;		/* submissions will fail */

/* public: documented fields in the urb that can be used by drivers */
	struct list_head urb_list;	/* list head for use by the urb's
					 * current owner */
	struct list_head anchor_list;	/* the URB may be anchored */
	struct usb_anchor *anchor;
	struct usb_device *dev;		/* (in) pointer to associated device */
	struct usb_host_endpoint *ep;	/* (internal) pointer to endpoint */
	unsigned int pipe;		/* (in) pipe information */
	unsigned int stream_id;		/* (in) stream ID */
	int status;			/* (return) non-ISO status */
	unsigned int transfer_flags;	/* (in) URB_SHORT_NOT_OK | ...*/
	void *transfer_buffer;		/* (in) associated data buffer */
	dma_addr_t transfer_dma;	/* (in) dma addr for transfer_buffer */
	struct scatterlist *sg;		/* (in) scatter gather buffer list */
	int num_mapped_sgs;		/* (internal) mapped sg entries */
	int num_sgs;			/* (in) number of entries in the sg list */
	u32 transfer_buffer_length;	/* (in) data buffer length */
	u32 actual_length;		/* (return) actual transfer length */
	unsigned char *setup_packet;	/* (in) setup packet (control only) */
	dma_addr_t setup_dma;		/* (in) dma addr for setup_packet */
	int start_frame;		/* (modify) start frame (ISO) */
	int number_of_packets;		/* (in) number of ISO packets */
	int interval;			/* (modify) transfer interval
					 * (INT/ISO) */
	int error_count;		/* (return) number of ISO errors */
	void *context;			/* (in) context for completion */
	usb_complete_t complete;	/* (in) completion routine */
	struct usb_iso_packet_descriptor iso_frame_desc[0];
					/* (in) ISO ONLY */
};

/* ----------------------------------------------------------------------- */

/**
 * usb_fill_control_urb - initializes a control urb
 * @urb: pointer to the urb to initialize.
 * @dev: pointer to the struct usb_device for this urb.
 * @pipe: the endpoint pipe
 * @setup_packet: pointer to the setup_packet buffer
 * @transfer_buffer: pointer to the transfer buffer
 * @buffer_length: length of the transfer buffer
 * @complete_fn: pointer to the usb_complete_t function
 * @context: what to set the urb context to.
 *
 * Initializes a control urb with the proper information needed to submit
 * it to a device.
 */
static inline void usb_fill_control_urb(struct urb *urb,
					struct usb_device *dev,
					unsigned int pipe,
					unsigned char *setup_packet,
					void *transfer_buffer,
					int buffer_length,
					usb_complete_t complete_fn,
					void *context)
{
	urb->dev = dev;
	urb->pipe = pipe;
	urb->setup_packet = setup_packet;
	urb->transfer_buffer = transfer_buffer;
	urb->transfer_buffer_length = buffer_length;
	urb->complete = complete_fn;
	urb->context = context;
}

/**
 * usb_fill_bulk_urb - macro to help initialize a bulk urb
 * @urb: pointer to the urb to initialize.
 * @dev: pointer to the struct usb_device for this urb.
 * @pipe: the endpoint pipe
 * @transfer_buffer: pointer to the transfer buffer
 * @buffer_length: length of the transfer buffer
 * @complete_fn: pointer to the usb_complete_t function
 * @context: what to set the urb context to.
 *
 * Initializes a bulk urb with the proper information needed to submit it
 * to a device.
 */
static inline void usb_fill_bulk_urb(struct urb *urb,
				     struct usb_device *dev,
				     unsigned int pipe,
				     void *transfer_buffer,
				     int buffer_length,
				     usb_complete_t complete_fn,
				     void *context)
{
	urb->dev = dev;
	urb->pipe = pipe;
	urb->transfer_buffer = transfer_buffer;
	urb->transfer_buffer_length = buffer_length;
	urb->complete = complete_fn;
	urb->context = context;
}

/**
 * usb_fill_int_urb - macro to help initialize a interrupt urb
 * @urb: pointer to the urb to initialize.
 * @dev: pointer to the struct usb_device for this urb.
 * @pipe: the endpoint pipe
 * @transfer_buffer: pointer to the transfer buffer
 * @buffer_length: length of the transfer buffer
 * @complete_fn: pointer to the usb_complete_t function
 * @context: what to set the urb context to.
 * @interval: what to set the urb interval to, encoded like
 *	the endpoint descriptor's bInterval value.
 *
 * Initializes a interrupt urb with the proper information needed to submit
 * it to a device.
 *
 * Note that High Speed and SuperSpeed(+) interrupt endpoints use a logarithmic
 * encoding of the endpoint interval, and express polling intervals in
 * microframes (eight per millisecond) rather than in frames (one per
 * millisecond).
 *
 * Wireless USB also uses the logarithmic encoding, but specifies it in units of
 * 128us instead of 125us.  For Wireless USB devices, the interval is passed
 * through to the host controller, rather than being translated into microframe
 * units.
 */
static inline void usb_fill_int_urb(struct urb *urb,
				    struct usb_device *dev,
				    unsigned int pipe,
				    void *transfer_buffer,
				    int buffer_length,
				    usb_complete_t complete_fn,
				    void *context,
				    int interval)
{
	urb->dev = dev;
	urb->pipe = pipe;
	urb->transfer_buffer = transfer_buffer;
	urb->transfer_buffer_length = buffer_length;
	urb->complete = complete_fn;
	urb->context = context;

if (dev->speed == USB_SPEED_HIGH || dev->speed >= USB_SPEED_SUPER) {
		/* make sure interval is within allowed range */
		interval = clamp(interval, 1, 16);

urb->interval = 1 << (interval - 1);
	} else {
		urb->interval = interval;
	}

urb->start_frame = -1;
}

extern void usb_init_urb(struct urb *urb);
extern struct urb *usb_alloc_urb(int iso_packets, gfp_t mem_flags);
extern void usb_free_urb(struct urb *urb);
#define usb_put_urb usb_free_urb
extern struct urb *usb_get_urb(struct urb *urb);
extern int usb_submit_urb(struct urb *urb, gfp_t mem_flags);
extern int usb_unlink_urb(struct urb *urb);
extern void usb_kill_urb(struct urb *urb);
extern void usb_poison_urb(struct urb *urb);
extern void usb_unpoison_urb(struct urb *urb);
extern void usb_block_urb(struct urb *urb);
extern void usb_kill_anchored_urbs(struct usb_anchor *anchor);
extern void usb_poison_anchored_urbs(struct usb_anchor *anchor);
extern void usb_unpoison_anchored_urbs(struct usb_anchor *anchor);
extern void usb_unlink_anchored_urbs(struct usb_anchor *anchor);
extern void usb_anchor_suspend_wakeups(struct usb_anchor *anchor);
extern void usb_anchor_resume_wakeups(struct usb_anchor *anchor);
extern void usb_anchor_urb(struct urb *urb, struct usb_anchor *anchor);
extern void usb_unanchor_urb(struct urb *urb);
extern int usb_wait_anchor_empty_timeout(struct usb_anchor *anchor,
					 unsigned int timeout);
extern struct urb *usb_get_from_anchor(struct usb_anchor *anchor);
extern void usb_scuttle_anchored_urbs(struct usb_anchor *anchor);
extern int usb_anchor_empty(struct usb_anchor *anchor);

#define usb_unblock_urb	usb_unpoison_urb

/**
 * usb_urb_dir_in - check if an URB describes an IN transfer
 * @urb: URB to be checked
 *
 * Return: 1 if @urb describes an IN transfer (device-to-host),
 * otherwise 0.
 */
static inline int usb_urb_dir_in(struct urb *urb)
{
	return (urb->transfer_flags & URB_DIR_MASK) == URB_DIR_IN;
}

/**
 * usb_urb_dir_out - check if an URB describes an OUT transfer
 * @urb: URB to be checked
 *
 * Return: 1 if @urb describes an OUT transfer (host-to-device),
 * otherwise 0.
 */
static inline int usb_urb_dir_out(struct urb *urb)
{
	return (urb->transfer_flags & URB_DIR_MASK) == URB_DIR_OUT;
}

int usb_pipe_type_check(struct usb_device *dev, unsigned int pipe);
int usb_urb_ep_type_check(const struct urb *urb);

void *usb_alloc_coherent(struct usb_device *dev, size_t size,
	gfp_t mem_flags, dma_addr_t *dma);
void usb_free_coherent(struct usb_device *dev, size_t size,
	void *addr, dma_addr_t dma);

#if 0
struct urb *usb_buffer_map(struct urb *urb);
void usb_buffer_dmasync(struct urb *urb);
void usb_buffer_unmap(struct urb *urb);
#endif

struct scatterlist;
int usb_buffer_map_sg(const struct usb_device *dev, int is_in,
		      struct scatterlist *sg, int nents);
#if 0
void usb_buffer_dmasync_sg(const struct usb_device *dev, int is_in,
			   struct scatterlist *sg, int n_hw_ents);
#endif
void usb_buffer_unmap_sg(const struct usb_device *dev, int is_in,
			 struct scatterlist *sg, int n_hw_ents);

/*-------------------------------------------------------------------*
 *                         SYNCHRONOUS CALL SUPPORT                  *
 *-------------------------------------------------------------------*/

extern int usb_control_msg(struct usb_device *dev, unsigned int pipe,
	__u8 request, __u8 requesttype, __u16 value, __u16 index,
	void *data, __u16 size, int timeout);
extern int usb_interrupt_msg(struct usb_device *usb_dev, unsigned int pipe,
	void *data, int len, int *actual_length, int timeout);
extern int usb_bulk_msg(struct usb_device *usb_dev, unsigned int pipe,
	void *data, int len, int *actual_length,
	int timeout);

/* wrappers around usb_control_msg() for the most common standard requests */
int usb_control_msg_send(struct usb_device *dev, __u8 endpoint, __u8 request,
			 __u8 requesttype, __u16 value, __u16 index,
			 const void *data, __u16 size, int timeout,
			 gfp_t memflags);
int usb_control_msg_recv(struct usb_device *dev, __u8 endpoint, __u8 request,
			 __u8 requesttype, __u16 value, __u16 index,
			 void *data, __u16 size, int timeout,
			 gfp_t memflags);
extern int usb_get_descriptor(struct usb_device *dev, unsigned char desctype,
	unsigned char descindex, void *buf, int size);
extern int usb_get_status(struct usb_device *dev,
	int recip, int type, int target, void *data);

static inline int usb_get_std_status(struct usb_device *dev,
	int recip, int target, void *data)
{
	return usb_get_status(dev, recip, USB_STATUS_TYPE_STANDARD, target,
		data);
}

static inline int usb_get_ptm_status(struct usb_device *dev, void *data)
{
	return usb_get_status(dev, USB_RECIP_DEVICE, USB_STATUS_TYPE_PTM,
		0, data);
}

extern int usb_string(struct usb_device *dev, int index,
	char *buf, size_t size);

/* wrappers that also update important state inside usbcore */
extern int usb_clear_halt(struct usb_device *dev, int pipe);
extern int usb_reset_configuration(struct usb_device *dev);
extern int usb_set_interface(struct usb_device *dev, int ifnum, int alternate);
extern void usb_reset_endpoint(struct usb_device *dev, unsigned int epaddr);

/* this request isn't really synchronous, but it belongs with the others */
extern int usb_driver_set_configuration(struct usb_device *udev, int config);

/* choose and set configuration for device */
extern int usb_choose_configuration(struct usb_device *udev);
extern int usb_set_configuration(struct usb_device *dev, int configuration);

/*
 * timeouts, in milliseconds, used for sending/receiving control messages
 * they typically complete within a few frames (msec) after they're issued
 * USB identifies 5 second timeouts, maybe more in a few cases, and a few
 * slow devices (like some MGE Ellipse UPSes) actually push that limit.
 */
#define USB_CTRL_GET_TIMEOUT	5000
#define USB_CTRL_SET_TIMEOUT	5000

/**
 * struct usb_sg_request - support for scatter/gather I/O
 * @status: zero indicates success, else negative errno
 * @bytes: counts bytes transferred.
 *
 * These requests are initialized using usb_sg_init(), and then are used
 * as request handles passed to usb_sg_wait() or usb_sg_cancel().  Most
 * members of the request object aren't for driver access.
 *
 * The status and bytecount values are valid only after usb_sg_wait()
 * returns.  If the status is zero, then the bytecount matches the total
 * from the request.
 *
 * After an error completion, drivers may need to clear a halt condition
 * on the endpoint.
 */
struct usb_sg_request {
	int			status;
	size_t			bytes;

/* private:
	 * members below are private to usbcore,
	 * and are not provided for driver access!
	 */
	spinlock_t		lock;

struct usb_device	*dev;
	int			pipe;

int			entries;
	struct urb		**urbs;

int			count;
	struct completion	complete;
};

int usb_sg_init(
	struct usb_sg_request	*io,
	struct usb_device	*dev,
	unsigned		pipe,
	unsigned		period,
	struct scatterlist	*sg,
	int			nents,
	size_t			length,
	gfp_t			mem_flags
);
void usb_sg_cancel(struct usb_sg_request *io);
void usb_sg_wait(struct usb_sg_request *io);

/* ----------------------------------------------------------------------- */

/*
 * For various legacy reasons, Linux has a small cookie that's paired with
 * a struct usb_device to identify an endpoint queue.  Queue characteristics
 * are defined by the endpoint's descriptor.  This cookie is called a "pipe",
 * an unsigned int encoded as:
 *
 *  - direction:	bit 7		(0 = Host-to-Device [Out],
 *					 1 = Device-to-Host [In] ...
 *					like endpoint bEndpointAddress)
 *  - device address:	bits 8-14       ... bit positions known to uhci-hcd
 *  - endpoint:		bits 15-18      ... bit positions known to uhci-hcd
 *  - pipe type:	bits 30-31	(00 = isochronous, 01 = interrupt,
 *					 10 = control, 11 = bulk)
 *
 * Given the device address and endpoint descriptor, pipes are redundant.
 */

/* NOTE:  these are not the standard USB_ENDPOINT_XFER_* values!! */
/* (yet ... they're the values used by usbfs) */
#define PIPE_ISOCHRONOUS		0
#define PIPE_INTERRUPT			1
#define PIPE_CONTROL			2
#define PIPE_BULK			3

#define usb_pipein(pipe)	((pipe) & USB_DIR_IN)
#define usb_pipeout(pipe)	(!usb_pipein(pipe))

#define usb_pipedevice(pipe)	(((pipe) >> 8) & 0x7f)
#define usb_pipeendpoint(pipe)	(((pipe) >> 15) & 0xf)

#define usb_pipetype(pipe)	(((pipe) >> 30) & 3)
#define usb_pipeisoc(pipe)	(usb_pipetype((pipe)) == PIPE_ISOCHRONOUS)
#define usb_pipeint(pipe)	(usb_pipetype((pipe)) == PIPE_INTERRUPT)
#define usb_pipecontrol(pipe)	(usb_pipetype((pipe)) == PIPE_CONTROL)
#define usb_pipebulk(pipe)	(usb_pipetype((pipe)) == PIPE_BULK)

static inline unsigned int __create_pipe(struct usb_device *dev,
		unsigned int endpoint)
{
	return (dev->devnum << 8) | (endpoint << 15);
}

/* Create various pipes... */
#define usb_sndctrlpipe(dev, endpoint)	\
	((PIPE_CONTROL << 30) | __create_pipe(dev, endpoint))
#define usb_rcvctrlpipe(dev, endpoint)	\
	((PIPE_CONTROL << 30) | __create_pipe(dev, endpoint) | USB_DIR_IN)
#define usb_sndisocpipe(dev, endpoint)	\
	((PIPE_ISOCHRONOUS << 30) | __create_pipe(dev, endpoint))
#define usb_rcvisocpipe(dev, endpoint)	\
	((PIPE_ISOCHRONOUS << 30) | __create_pipe(dev, endpoint) | USB_DIR_IN)
#define usb_sndbulkpipe(dev, endpoint)	\
	((PIPE_BULK << 30) | __create_pipe(dev, endpoint))
#define usb_rcvbulkpipe(dev, endpoint)	\
	((PIPE_BULK << 30) | __create_pipe(dev, endpoint) | USB_DIR_IN)
#define usb_sndintpipe(dev, endpoint)	\
	((PIPE_INTERRUPT << 30) | __create_pipe(dev, endpoint))
#define usb_rcvintpipe(dev, endpoint)	\
	((PIPE_INTERRUPT << 30) | __create_pipe(dev, endpoint) | USB_DIR_IN)

static inline struct usb_host_endpoint *
usb_pipe_endpoint(struct usb_device *dev, unsigned int pipe)
{
	struct usb_host_endpoint **eps;
	eps = usb_pipein(pipe) ? dev->ep_in : dev->ep_out;
	return eps[usb_pipeendpoint(pipe)];
}

/*-------------------------------------------------------------------------*/

static inline __u16
usb_maxpacket(struct usb_device *udev, int pipe, int is_out)
{
	struct usb_host_endpoint	*ep;
	unsigned			epnum = usb_pipeendpoint(pipe);

if (is_out) {
		WARN_ON(usb_pipein(pipe));
		ep = udev->ep_out[epnum];
	} else {
		WARN_ON(usb_pipeout(pipe));
		ep = udev->ep_in[epnum];
	}
	if (!ep)
		return 0;

/* NOTE:  only 0x07ff bits are for packet size... */
	return usb_endpoint_maxp(&ep->desc);
}

/* ----------------------------------------------------------------------- */

/* translate USB error codes to codes user space understands */
static inline int usb_translate_errors(int error_code)
{
	switch (error_code) {
	case 0:
	case -ENOMEM:
	case -ENODEV:
	case -EOPNOTSUPP:
		return error_code;
	default:
		return -EIO;
	}
}

/* Events from the usb core */
#define USB_DEVICE_ADD		0x0001
#define USB_DEVICE_REMOVE	0x0002
#define USB_BUS_ADD		0x0003
#define USB_BUS_REMOVE		0x0004
extern void usb_register_notify(struct notifier_block *nb);
extern void usb_unregister_notify(struct notifier_block *nb);

/* debugfs stuff */
extern struct dentry *usb_debug_root;

/* LED triggers */
enum usb_led_event {
	USB_LED_EVENT_HOST = 0,
	USB_LED_EVENT_GADGET = 1,
};

#ifdef CONFIG_USB_LED_TRIG
extern void usb_led_activity(enum usb_led_event ev);
#else
static inline void usb_led_activity(enum usb_led_event ev) {}
#endif

#endif  /* __KERNEL__ */

#endif

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Code Editor : usb.h