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linux-uconsole/drivers
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David Herrmann c12e46fb71 HID: uhid: implement feature requests 
HID standard allows sending a feature request to the device which is
answered by an HID report. uhid implements this by sending a UHID_FEATURE
event to user-space which then must answer with UHID_FEATURE_ANSWER. If it
doesn't do this in a timely manner, the request is discarded silently.

We serialize the feature requests, that is, there is always only a single
active feature-request sent to user-space, other requests have to wait.
HIDP and USB-HID do it the same way.

Because we discard feature-requests silently, we must make sure to match
a response to the corresponding request. We use sequence-IDs for this so
user-space must copy the ID from the request into the answer.
Feature-answers are ignored if they do not contain the same ID as the
currently pending feature request.

Internally, we must make sure that feature-requests are synchronized with
UHID_DESTROY and close() events. We must not dead-lock when closing the
HID device, either, so we have to use separate locks.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-08-16 12:44:29 -07:00
..
accessibility
acpi ACPICA: Fix to allow region arguments to reference other scopes 2012-04-22 16:21:43 -07:00
amba
ata libata: skip old error history when counting probe trials 2012-05-07 08:56:39 -07:00
atm
auxdisplay
base Merge linux-stable 3.0.28 into android-3.0 2012-04-19 15:20:03 -07:00
bcma
block cciss: Fix scsi tape io with more than 255 scatter gather elements 2012-04-22 16:21:24 -07:00
bluetooth Bluetooth: Add support for Atheros [04ca:3005] 2012-04-27 09:51:09 -07:00
cdrom cdrom: use copy_to_user() without the underscores 2012-02-29 16:34:35 -08:00
char Merge commit 'v3.0.8' into android-3.0 2011-10-27 15:01:19 -07:00
clk
clocksource
connector
cpufreq cpufreq: interactive: restart above_hispeed_delay at each hispeed load 2012-05-10 23:35:45 -07:00
cpuidle
crypto crypto: mv_cesa - fix final callback not ignoring input data 2012-03-12 10:32:56 -07:00
dca
dio
dma dmaengine: at_hdmac: remove clear-on-read in atc_dostart() 2012-05-07 08:56:33 -07:00
edac
eisa
firewire firewire: ohci: fix too-early completion of IR multichannel buffers 2012-04-02 09:27:13 -07:00
firmware efivars: Improve variable validation 2012-05-07 08:56:38 -07:00
gpio gpio/pca953x: Fix warning of enabled interrupts in handler 2012-02-20 12:48:11 -08:00
gpu Merge commit 'v3.0.31' into android-3.0 2012-05-08 11:36:40 -07:00
hid HID: uhid: implement feature requests 2012-08-16 12:44:29 -07:00
hwmon hwmon: (coretemp) fix oops on cpu unplug 2012-05-07 08:56:39 -07:00
hwspinlock hwspinlock/core: use a mutex to protect the radix tree 2011-11-11 09:36:31 -08:00
i2c i2c: pnx: Disable clk in suspend 2012-05-07 08:56:39 -07:00
ide block: add and use scsi_blk_cmd_ioctl 2012-01-25 17:24:54 -08:00
idle intel_idle: fix API misuse 2012-01-25 17:24:56 -08:00
ieee802154
infiniband IB/iser: Post initial receive buffers before sending the final login request 2012-04-02 09:27:10 -07:00
input Merge linux-stable 3.0.28 into android-3.0 2012-04-19 15:20:03 -07:00
isdn
leds Merge linux-stable 3.0.28 into android-3.0 2012-04-19 15:20:03 -07:00
lguest
macintosh
mca
md md/bitmap: prevent bitmap_daemon_work running while initialising bitmap 2012-04-22 16:21:44 -07:00
media media: rc-core: set mode for winbond-cir 2012-04-27 09:51:06 -07:00
memstick
message
mfd mfd: Clear twl6030 IRQ status register only once 2012-04-13 08:14:08 -07:00
misc Merge commit 'v3.0.30' into android-3.0 2012-04-30 15:36:56 -07:00
mmc mmc: Make sure host is disabled on suspend 2012-08-16 11:27:59 -07:00
mtd Merge linux-stable 3.0.28 into android-3.0 2012-04-19 15:20:03 -07:00
net net: wireless: bcm4329: Remove obsolete files 2012-08-13 14:03:29 -07:00
nfc
nubus
of
oprofile oprofile: Fix uninitialized memory access when writing to writing to oprofilefs 2012-01-06 14:13:51 -08:00
parisc
parport
pci PCI: Add quirk for still enabled interrupts on Intel Sandy Bridge GPUs 2012-04-27 09:51:08 -07:00
pcmcia pcmcia: fix socket refcount decrementing on each resume 2012-02-13 11:06:10 -08:00
platform acer-wmi: No wifi rfkill on Sony machines 2012-04-13 08:14:08 -07:00
pnp PNPACPI: Fix device ref leaking in acpi_pnp_match 2012-04-13 08:14:05 -07:00
power Merge linux-stable 3.0.28 into android-3.0 2012-04-19 15:20:03 -07:00
pps
ps3
ptp ptp: Fix clock_getres() implementation 2011-12-21 12:57:36 -08:00
rapidio
regulator regulator: Fix setting selector in tps6524x set_voltage function 2012-03-19 08:57:58 -07:00
rtc Merge commit 'v3.0.30' into android-3.0 2012-04-30 15:36:56 -07:00
s390 compat: Re-add missing asm/compat.h include to fix compile breakage on s390 2012-03-19 08:57:59 -07:00
sbus
scsi SCSI: libsas: fix false positive 'device attached' conditions 2012-05-07 08:56:37 -07:00
sfi
sh
sn
spi spi: Fix device unregistration when unregistering the bus master 2012-04-27 09:51:09 -07:00
ssb ssb: fix init regression with SoCs 2012-01-06 14:13:48 -08:00
staging Merge commit 'v3.0.31' into android-3.0 2012-05-08 11:36:40 -07:00
switch switch: add timestamps to switch driver 2012-04-02 16:33:57 -07:00
target target: Fix 16-bit target ports for SET TARGET PORT GROUPS emulation 2012-04-02 09:27:12 -07:00
tc
telephony
thermal
tty Merge commit 'v3.0.30' into android-3.0 2012-04-30 15:36:56 -07:00
uio
usb USB: gadget: f_audio_source: Fix error handling and increase packet size 2012-08-02 15:23:27 -07:00
uwb uwb: fix error handling 2012-04-27 09:51:06 -07:00
vhost
video Merge commit 'v3.0.30' into android-3.0 2012-04-30 15:36:56 -07:00
virtio virtio-pci: fix use after free 2011-11-21 14:31:14 -08:00
vlynq
w1 drivers/power/ds2780_battery.c: add a nolock function to w1 interface 2011-11-11 09:36:32 -08:00
watchdog watchdog: hpwdt: clean up set_memory_x call for 32 bit 2012-03-12 10:32:40 -07:00
xen xen/xenbus: Add quirk to deal with misconfigured backends. 2012-04-27 09:51:05 -07:00
zorro zorro: Defer device_register() until all devices have been identified 2011-10-03 11:40:57 -07:00
Kconfig
Makefile