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df03e9bd6d
linux/drivers
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Jason Gerecke df03e9bd6d HID: wacom: Ignore the confidence flag when a touch is removed 
AES hardware may internally re-classify a contact that it thought was
intentional as a palm. Intentional contacts are reported as "down" with
the confidence bit set. When this re-classification occurs, however, the
state transitions to "up" with the confidence bit cleared. This kind of
transition appears to be legal according to Microsoft docs, but we do
not handle it correctly. Because the confidence bit is clear, we don't
call `wacom_wac_finger_slot` and update userspace. This causes hung
touches that confuse userspace and interfere with pen arbitration.

This commit adds a special case to ignore the confidence flag if a contact
is reported as removed. This ensures we do not leave a hung touch if one
of these re-classification events occured. Ideally we'd have some way to
also let userspace know that the touch has been re-classified as a palm
and needs to be canceled, but that's not possible right now :)

Link: https://github.com/linuxwacom/input-wacom/issues/288
Fixes: 7fb0413baa (HID: wacom: Use "Confidence" flag to prevent reporting invalid contacts)
CC: stable@vger.kernel.org
Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Reviewed-by: Ping Cheng <ping.cheng@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2022-01-21 15:10:02 +01:00
..
accessibility
acpi Power management updates for 5.17-rc1 2022-01-10 20:34:00 -08:00
amba
android binder: fix async_free_space accounting for empty parcels 2021-12-21 11:07:34 +01:00
ata libata: if T_LENGTH is zero, dma direction should be DMA_NONE 2021-12-17 09:32:13 +09:00
atm
auxdisplay auxdisplay: charlcd: checking for pointer reference before dereferencing 2021-11-24 11:46:52 +01:00
base Device properties framework updates for 5.17-rc1 2022-01-10 20:48:19 -08:00
bcma pci-v5.16-changes 2021-11-06 14:36:12 -07:00
block xen/blkfront: harden blkfront against event channel storms 2021-12-16 08:24:08 +01:00
bluetooth Bluetooth: btqca: sequential validation 2022-01-07 08:32:55 +01:00
bus ARM: SoC driver updates for v5.17 2022-01-10 08:13:52 -08:00
cdrom for-5.16/cdrom-2021-10-29 2021-11-01 10:09:14 -07:00
char Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2022-01-11 10:21:35 -08:00
clk drm for 5.17-rc1 2022-01-10 12:58:46 -08:00
clocksource clocksource/drivers/arm_arch_timer: Force inlining of erratum_set_next_event_generic() 2021-12-10 17:47:00 +01:00
comedi comedi: dt9812: fix DMA buffers on stack 2021-10-30 10:54:47 +02:00
connector
counter counter: Fix use-after-free race condition for events_queue_size write 2021-10-21 13:02:47 +02:00
cpufreq cpufreq: amd-pstate: Fix Kconfig dependencies for AMD P-State 2022-01-06 18:31:33 +01:00
cpuidle cpuidle: use default_groups in kobj_type 2022-01-05 18:31:17 +01:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2022-01-11 10:21:35 -08:00
cxl cxl for v5.16 2021-11-08 11:49:48 -08:00
dax
dca
devfreq PM / devfreq: Reduce log severity for informative message 2021-12-16 11:29:54 +09:00
dio
dma dmaengine: st_fdma: fix MODULE_ALIAS 2021-12-13 13:18:48 +05:30
dma-buf Linux 5.16-rc5 2021-12-14 10:24:28 +01:00
edac - Add support for version 3 of the Synopsys DDR controller to synopsys_edac 2022-01-10 11:45:23 -08:00
eisa
extcon extcon: usbc-tusb320: Add support for TUSB320L 2021-10-27 14:13:39 +09:00
firewire SCSI misc on 20211105 2021-11-05 08:42:02 -07:00
firmware ARM: SoC driver updates for v5.17 2022-01-10 08:13:52 -08:00
fpga
fsi fsi: sbefifo: Use interruptible mutex locking 2021-10-22 09:54:33 +10:30
gnss
gpio gpio: gpio-aspeed-sgpio: Fix wrong hwirq base in irq handler 2022-01-03 10:50:12 +01:00
gpu Revert "drm/amd/display: Fix for otg synchronization logic" 2022-01-10 18:50:10 -08:00
greybus
hid HID: wacom: Ignore the confidence flag when a touch is removed 2022-01-21 15:10:02 +01:00
hsi HSI changes for the 5.16 series 2021-11-04 13:56:55 -07:00
hv random: remove unused irq_flags argument from add_interrupt_randomness() 2022-01-07 00:25:25 +01:00
hwmon hwmon: (nzxt-smart2) make array detect_fans_report static const 2022-01-09 17:10:58 -08:00
hwspinlock
hwtracing coresight: trbe: Work around write to out of range 2021-10-27 11:46:01 -06:00
i2c ACPI updates for 5.17-rc1 2022-01-10 20:26:56 -08:00
i3c
idle
iio iio: trigger: stm32-timer: fix MODULE_ALIAS 2021-12-04 15:37:02 +00:00
infiniband Networking changes for 5.17. 2022-01-10 19:06:09 -08:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2022-01-09 10:49:12 -08:00
interconnect
iommu s390/pci: use physical addresses in DMA tables 2021-12-06 14:42:26 +01:00
ipack
irqchip irqchip/irq-bcm7120-l2: Add put_device() after of_find_device_by_node() 2021-12-10 13:23:13 +00:00
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-12-30 12:12:12 -08:00
leds
macintosh Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
mailbox mailbox: imx: support i.MX8ULP S4 MU 2021-10-29 23:03:09 -05:00
mcb
md block-5.16-2022-01-07 2022-01-07 13:28:20 -08:00
media media: ipu3-cio2: Add support for instantiating i2c-clients for VCMs 2021-12-16 20:58:56 +01:00
memory ARM: SoC driver updates for v5.17 2022-01-10 08:13:52 -08:00
memstick
message pci-v5.16-changes 2021-11-06 14:36:12 -07:00
mfd chrome platform changes for 5.16 2021-11-10 11:36:43 -08:00
misc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-12-16 16:13:19 -08:00
mmc Power management updates for 5.17-rc1 2022-01-10 20:34:00 -08:00
most most: fix control-message timeouts 2021-10-26 19:12:01 +02:00
mtd ARM: SoC driver updates for v5.17 2022-01-10 08:13:52 -08:00
mux mux: add support for delay after muxing 2021-10-21 20:02:42 +01:00
net Power management updates for 5.17-rc1 2022-01-10 20:34:00 -08:00
nfc nfc: st21nfca: remove redundant assignment to variable i 2021-12-30 17:26:58 -08:00
ntb
nubus
nvdimm libnvdimm for v5.16 2021-11-10 10:56:02 -08:00
nvme nvmet-tcp: fix possible list corruption for unexpected command failure 2021-12-08 16:36:58 +01:00
nvmem
of Merge drm/drm-next into drm-misc-next 2021-12-16 14:48:27 +01:00
opp
parisc
parport
pci Device properties framework updates for 5.17-rc1 2022-01-10 20:48:19 -08:00
pcmcia pcmcia: hide the MAC address helpers if !NET 2021-11-22 14:02:52 +00:00
perf drivers: perf: marvell_cn10k: fix an IS_ERR() vs NULL check 2022-01-04 13:58:17 +00:00
phy Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-12-16 16:13:19 -08:00
pinctrl SoC: Add support for StarFive JH7100 RISC-V SoC 2022-01-10 08:32:37 -08:00
platform media updates for v5.17-rc1 2022-01-10 18:55:43 -08:00
pnp
power power: reset: ltc2952: Fix use of floating point literals 2021-11-16 15:22:39 +01:00
powercap Merge back earlier power capping changes for v5.17 2021-12-27 16:51:12 +01:00
pps
ps3
ptp net: fix SOF_TIMESTAMPING_BIND_PHC to work with multiple sockets 2022-01-06 12:18:08 +00:00
pwm drm for 5.17-rc1 2022-01-10 12:58:46 -08:00
rapidio rapidio: avoid bogus __alloc_size warning 2021-11-06 13:30:33 -07:00
ras RAS/CEC: Remove a repeated 'an' in a comment 2021-12-11 11:55:27 +01:00
regulator - Remove Drivers 2021-11-08 12:07:52 -08:00
remoteproc
reset SoC: Add support for StarFive JH7100 RISC-V SoC 2022-01-10 08:32:37 -08:00
rpmsg remoteproc updates for v5.16 2021-11-10 09:07:26 -08:00
rtc RTC for 5.16 2021-11-12 11:44:31 -08:00
s390 Networking changes for 5.17. 2022-01-10 19:06:09 -08:00
sbus
scsi SCSI fixes on 20211231 2021-12-31 09:22:25 -08:00
sh
siox
slimbus
soc ARM: SoC devicetree changes for v5.17 2022-01-10 08:24:40 -08:00
soundwire soundwire: qcom: add debugfs entry for soundwire register dump 2021-10-20 20:54:59 +05:30
spi ARM: SoC driver updates for v5.17 2022-01-10 08:13:52 -08:00
spmi
ssb
staging Device properties framework updates for 5.17-rc1 2022-01-10 20:48:19 -08:00
target scsi: target: configfs: Delete unnecessary checks for NULL 2021-11-18 23:07:02 -05:00
tc
tee ARM: SoC driver updates for v5.17 2022-01-10 08:13:52 -08:00
thermal Thermal control updates for 5.17-rc1 2022-01-10 20:43:54 -08:00
thunderbolt thunderbolt: Changes for v5.16 merge window 2021-10-25 13:17:29 +02:00
tty ACPI updates for 5.17-rc1 2022-01-10 20:26:56 -08:00
uio Drivers: hv: vmbus: Mark vmbus ring buffer visible to host in Isolation VM 2021-10-28 11:22:23 +00:00
usb ARM: SoC driver updates for v5.17 2022-01-10 08:13:52 -08:00
vdpa vdpa: Consider device id larger than 31 2021-12-08 15:41:50 -05:00
vfio vfio/pci: Fix OpRegion read 2021-11-30 11:41:49 -07:00
vhost vdpa: check that offsets are within bounds 2021-12-08 14:53:15 -05:00
video drm for 5.17-rc1 2022-01-10 12:58:46 -08:00
virt nitro_enclaves: Use get_user_pages_unlocked() call to handle mmap assert 2021-12-21 11:08:19 +01:00
virtio virtio_ring: Fix querying of maximum DMA mapping size for virtio device 2021-12-08 15:04:06 -05:00
visorbus
vlynq
vme
w1
watchdog linux-watchdog 5.16-rc1 tag 2021-11-10 09:41:22 -08:00
xen xen/console: harden hvc_xen against event channel storms 2021-12-16 08:24:08 +01:00
zorro
Kconfig
Makefile virtio: always enter drivers/virtio/ 2021-12-08 14:53:15 -05:00