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ff479731c3
linux/drivers
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Jason Gerecke ff479731c3 HID: wacom: generic: Treat serial number and related fields as unsigned 
The HID descriptors for most Wacom devices oddly declare the serial
number and other related fields as signed integers. When these numbers
are ingested by the HID subsystem, they are automatically sign-extended
into 32-bit integers. We treat the fields as unsigned elsewhere in the
kernel and userspace, however, so this sign-extension causes problems.
In particular, the sign-extended tool ID sent to userspace as ABS_MISC
does not properly match unsigned IDs used by xf86-input-wacom and libwacom.

We introduce a function 'wacom_s32tou' that can undo the automatic sign
extension performed by 'hid_snto32'. We call this function when processing
the serial number and related fields to ensure that we are dealing with
and reporting the unsigned form. We opt to use this method rather than
adding a descriptor fixup in 'wacom_hid_usage_quirk' since it should be
more robust in the face of future devices.

Ref: https://github.com/linuxwacom/input-wacom/issues/134
Fixes: f85c9dc678 ("HID: wacom: generic: Support tool ID and additional tool types")
CC: <stable@vger.kernel.org> # v4.10+
Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Reviewed-by: Aaron Armstrong Skomra <aaron.skomra@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2019-11-06 21:37:29 +01:00
..
accessibility
acpi libnvdimm for 5.4 2019-09-21 10:55:29 -07:00
amba ARM updates for 5.4-rc1: 2019-09-22 09:39:09 -07:00
android
ata for-5.4/libata-2019-09-15 2019-09-17 16:54:40 -07:00
atm
auxdisplay It's a somewhat calmer cycle for docs this time, as the churn of the mass 2019-09-17 16:22:26 -07:00
base Merge branch 'work.mount2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-09-19 10:06:57 -07:00
bcma bcma: make arrays pwr_info_offset and sprom_sizes static const, shrinks object size 2019-09-13 16:44:49 +03:00
block for-5.4/block-2019-09-16 2019-09-17 16:57:47 -07:00
bluetooth Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-09-15 14:17:27 +02:00
bus ARM: SoC: late updates for v5.4 2019-09-20 15:53:02 -07:00
cdrom
char Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-09-23 09:31:42 -07:00
clk Main MIPS changes for v5.4: 2019-09-22 09:30:30 -07:00
clocksource Main MIPS changes for v5.4: 2019-09-22 09:30:30 -07:00
connector
counter
cpufreq Power management updates for 5.4-rc1 2019-09-17 19:15:14 -07:00
cpuidle Power management updates for 5.4-rc1 2019-09-17 19:15:14 -07:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-09-23 09:31:42 -07:00
dax
dca
devfreq
dio
dma Main MIPS changes for v5.4: 2019-09-22 09:30:30 -07:00
dma-buf
edac ARM updates for 5.4-rc1: 2019-09-22 09:39:09 -07:00
eisa
extcon chrome platform changes for v5.4 2019-09-19 14:14:28 -07:00
firewire
firmware firmware: bcm47xx_nvram: _really_ correct size_t printf format 2019-09-22 11:31:15 -07:00
fpga Char/Misc driver patches for 5.4-rc1 2019-09-18 11:14:31 -07:00
fsi
gnss
gpio This is the bulk of pin control changes for the v5.4 kernel 2019-09-19 14:19:33 -07:00
gpu hmm related patches for 5.4 2019-09-21 10:07:42 -07:00
greybus
hid HID: wacom: generic: Treat serial number and related fields as unsigned 2019-11-06 21:37:29 +01:00
hsi HSI changes for the 5.4 series 2019-09-22 12:02:21 -07:00
hv Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-09-17 12:35:15 -07:00
hwmon Main MIPS changes for v5.4: 2019-09-22 09:30:30 -07:00
hwspinlock
hwtracing Char/Misc driver patches for 5.4-rc1 2019-09-18 11:14:31 -07:00
i2c chrome platform changes for v5.4 2019-09-19 14:14:28 -07:00
i3c
ide
idle
iio chrome platform changes for v5.4 2019-09-19 14:14:28 -07:00
infiniband RDMA subsystem updates for 5.4 2019-09-21 10:26:24 -07:00
input chrome platform changes for v5.4 2019-09-19 14:14:28 -07:00
interconnect
iommu Devicetree updates for v5.4: 2019-09-19 13:48:37 -07:00
ipack
irqchip Main MIPS changes for v5.4: 2019-09-22 09:30:30 -07:00
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-09-15 14:17:27 +02:00
leds leds: lm3532: Fix optional led-max-microamp prop error handling 2019-09-12 20:45:52 +02:00
lightnvm lightnvm: print error when target is not found 2019-09-05 13:17:01 -06:00
macintosh
mailbox mailbox: qcom-apcs: fix max_register value 2019-09-17 00:54:29 -05:00
mcb
md - crypto and DM crypt advances that allow the crypto API to reclaim 2019-09-21 10:40:37 -07:00
media chrome platform changes for v5.4 2019-09-19 14:14:28 -07:00
memory
memstick ms_block: fix spelling mistake "randomally" -> "randomly" 2019-09-11 16:11:01 +02:00
message
mfd Main MIPS changes for v5.4: 2019-09-22 09:30:30 -07:00
misc hmm related patches for 5.4 2019-09-21 10:07:42 -07:00
mmc dma-mapping updates for 5.4: 2019-09-19 13:27:23 -07:00
mtd Main MIPS changes for v5.4: 2019-09-22 09:30:30 -07:00
mux
net RDMA subsystem updates for 5.4 2019-09-21 10:26:24 -07:00
nfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-09-15 14:17:27 +02:00
ntb
nubus
nvdimm libnvdimm for 5.4 2019-09-21 10:55:29 -07:00
nvme for-5.4/block-2019-09-16 2019-09-17 16:57:47 -07:00
nvmem Char/Misc driver patches for 5.4-rc1 2019-09-18 11:14:31 -07:00
of Devicetree updates for v5.4: 2019-09-19 13:48:37 -07:00
opp
oprofile
parisc dma-mapping updates for 5.4: 2019-09-19 13:27:23 -07:00
parport Char/Misc driver patches for 5.4-rc1 2019-09-18 11:14:31 -07:00
pci powerpc updates for 5.4 2019-09-20 11:48:06 -07:00
pcmcia
perf
phy power supply and reset changes for the v5.4 series 2019-09-22 12:04:59 -07:00
pinctrl This is the bulk of pin control changes for the v5.4 kernel 2019-09-19 14:19:33 -07:00
platform chrome platform changes for v5.4 2019-09-19 14:14:28 -07:00
pnp
power power supply and reset changes for the v5.4 series 2019-09-22 12:04:59 -07:00
powercap Power management updates for 5.4-rc1 2019-09-17 19:15:14 -07:00
pps
ps3
ptp PTP: introduce new versions of IOCTLs 2019-09-13 15:57:02 +02:00
pwm chrome platform changes for v5.4 2019-09-19 14:14:28 -07:00
rapidio
ras
regulator LED updates for 5.4-rc1 2019-09-17 18:40:42 -07:00
remoteproc remoteproc updates for v5.4 2019-09-22 10:55:08 -07:00
reset
rpmsg rpmsg: glink-smem: Name the edge based on parent remoteproc 2019-09-17 15:33:31 -07:00
rtc RTC for 5.4 2019-09-22 11:05:43 -07:00
s390 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 2019-09-18 12:34:53 -07:00
sbus
scsi SCSI misc on 20190919 2019-09-21 10:50:15 -07:00
sfi
sh
siox
slimbus
soc ARM: SoC driver updates for v5.4 2019-09-16 15:52:38 -07:00
soundwire soundwire updates for v5.4-rc1 2019-09-22 10:52:23 -07:00
spi LED updates for 5.4-rc1 2019-09-17 18:40:42 -07:00
spmi
ssb ssb: make array pwr_info_offset static const, makes object smaller 2019-09-13 17:23:18 +03:00
staging Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 2019-09-18 12:34:53 -07:00
target SCSI misc on 20190919 2019-09-21 10:50:15 -07:00
tc
tee
thermal Merge branch 'pm-cpufreq' 2019-09-17 09:44:29 +02:00
thunderbolt
tty TTY/Serial driver changes for 5.4-rc1 2019-09-18 10:50:47 -07:00
uio Char/Misc driver patches for 5.4-rc1 2019-09-18 11:14:31 -07:00
usb Modules updates for v5.4 2019-09-22 10:34:46 -07:00
vfio VFIO updates for v5.4-rc1 2019-09-20 15:06:13 -07:00
vhost Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-09-15 14:17:27 +02:00
video Main MIPS changes for v5.4: 2019-09-22 09:30:30 -07:00
virt
virtio virtio_ring: fix unmap of indirect descriptors 2019-09-09 10:43:15 -04:00
visorbus
vlynq
vme
w1
watchdog ARM: SoC platform updates for v5.4 2019-09-16 15:48:14 -07:00
xen dma-mapping updates for 5.4: 2019-09-19 13:27:23 -07:00
zorro
Kconfig Staging/IIO driver patches for 5.4-rc1 2019-09-18 11:05:34 -07:00
Makefile Staging/IIO driver patches for 5.4-rc1 2019-09-18 11:05:34 -07:00