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linux-stable/drivers/hid
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Jason Gerecke 546e41ac99 HID: wacom: Reset expected and received contact counts at the same time 
These two values go hand-in-hand and must be valid for the driver to
behave correctly. We are currently lazy about updating the values and
rely on the "expected" code flow to take care of making sure they're
valid at the point they're needed. The "expected" flow changed somewhat
with commit f8b6a74719 ("HID: wacom: generic: Support multiple tools
per report"), however. This led to problems with the DTH-2452 due (in
part) to *all* contacts being fully processed -- even those past the
expected contact count. Specifically, the received count gets reset to
0 once all expected fingers are processed, but not the expected count.
The rest of the contacts in the report are then *also* processed since
now the driver thinks we've only processed 0 of N expected contacts.

Later commits such as 7fb0413baa (HID: wacom: Use "Confidence" flag to
prevent reporting invalid contacts) worked around the DTH-2452 issue by
skipping the invalid contacts at the end of the report, but this is not
a complete fix. The confidence flag cannot be relied on when a contact
is removed (see the following patch), and dealing with that condition
re-introduces the DTH-2452 issue unless we also address this contact
count laziness. By resetting expected and received counts at the same
time we ensure the driver understands that there are 0 more contacts
expected in the report. Similarly, we also make sure to reset the
received count if for some reason we're out of sync in the pre-report
phase.

Link: https://github.com/linuxwacom/input-wacom/issues/288
Fixes: f8b6a74719 ("HID: wacom: generic: Support multiple tools per report")
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
..
amd-sfh-hid Merge branch 'for-5.16/amd-sfh' into for-linus 2021-11-05 12:08:34 +01:00
i2c-hid Merge branch 'for-5.17/i2c-hid' into for-linus 2022-01-10 09:56:27 +01:00
intel-ish-hid HID: intel-ish-hid: ishtp-fw-loader: Fix a kernel-doc formatting issue 2022-01-06 15:39:43 +01:00
surface-hid HID: add suspend/resume helpers 2021-12-02 15:42:46 +01:00
usbhid HID: add suspend/resume helpers 2021-12-02 15:42:46 +01:00
hid-a4tech.c HID: a4tech: use A4_2WHEEL_MOUSE_HACK_B8 for A4TECH NB-95 2021-05-05 14:29:13 +02:00
hid-accutouch.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-alps.c Merge branch 'for-5.13/warnings' into for-linus 2021-04-29 21:47:22 +02:00
hid-apple.c HID: apple: Add Magic Keyboard 2021 with fingerprint reader FN key mapping 2022-01-06 14:01:32 +01:00
hid-appleir.c HID: appleir: Use devm_kzalloc() instead of kzalloc() 2020-03-13 17:33:11 +01:00
hid-asus.c HID: add hid_is_usb() function to make it simpler for USB detection 2021-12-02 15:35:57 +01:00
hid-aureal.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
hid-axff.c HID: Fix assumption that devices have inputs 2019-10-03 15:36:40 -04:00
hid-belkin.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-betopff.c HID: betop: fix slab-out-of-bounds Write in betop_probe 2021-09-15 16:31:21 +02:00
hid-bigbenff.c HID: bigbenff: prevent null pointer dereference 2021-12-02 15:36:18 +01:00
hid-cherry.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-chicony.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-cmedia.c HID: cmedia: add support for HS-100B mute button 2021-07-28 11:51:07 +02:00
hid-core.c HID: do not inline some hid_hw_ functions 2021-12-02 15:42:46 +01:00
hid-corsair.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-cougar.c HID: cougar: Make use of the helper function devm_add_action_or_reset() 2021-10-07 13:37:25 +02:00
hid-cp2112.c HID: cp2112: Use struct_group() for memcpy() region 2021-09-25 08:20:48 -07:00
hid-creative-sb0540.c HID: sb0540: add support for Creative SB0540 IR receivers 2019-09-03 16:52:04 +02:00
hid-cypress.c HID: cypress: Support Varmilo Keyboards' media hotkeys 2020-10-23 13:23:44 +02:00
hid-debug.c HID: debug: Add USI usages 2021-12-14 10:08:45 +01:00
hid-dr.c HID: Fix assumption that devices have inputs 2019-10-03 15:36:40 -04:00
hid-elan.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-elecom.c HID: elecom: drop stray comment 2020-11-25 17:40:23 +01:00
hid-elo.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-emsff.c HID: Fix assumption that devices have inputs 2019-10-03 15:36:40 -04:00
hid-ezkey.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-ft260.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-gaff.c HID: Fix assumption that devices have inputs 2019-10-03 15:36:40 -04:00
hid-gembird.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-generic.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-gfrm.c HID: do not call hid_set_drvdata(hdev, NULL) in drivers 2019-08-22 17:11:58 +02:00
hid-glorious.c HID: Add driver fixing Glorious PC Gaming Race mouse report descriptor 2020-03-18 13:36:21 +01:00
hid-google-hammer.c HID: google: add eel USB id 2021-12-03 09:19:38 +01:00
hid-gt683r.c HID: gt683r: add missing MODULE_DEVICE_TABLE 2021-05-27 15:40:34 +02:00
hid-gyration.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-holtek-kbd.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-holtek-mouse.c HID: holtek: fix mouse probing 2021-12-20 11:25:42 +01:00
hid-holtekff.c HID: Fix assumption that devices have inputs 2019-10-03 15:36:40 -04:00
hid-hyperv.c HID: hyperv: Use VMBUS_RING_SIZE() for ringbuffer sizes 2020-09-28 08:57:28 +00:00
hid-icade.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-ids.h HID: Ignore battery for Elan touchscreen on HP Envy X360 15t-dr100 2022-01-12 11:13:10 +01:00
hid-input.c HID: Ignore battery for Elan touchscreen on HP Envy X360 15t-dr100 2022-01-12 11:13:10 +01:00
hid-ite.c HID: lg-g15 + ite: Add MODULE_AUTHOR 2021-05-05 14:39:24 +02:00
hid-jabra.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-kensington.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-keytouch.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-kye.c HID: hid-kye: Fix incorrect function name for kye_tablet_enable() 2021-04-07 18:46:20 +02:00
hid-lcpower.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-led.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372 2019-06-05 17:37:10 +02:00
hid-lenovo.c HID: lenovo: Add support for Thinkpad X1 Tablet Thin keyboard 2021-04-07 12:48:20 +02:00
hid-letsketch.c HID: Add new Letsketch tablet driver 2022-01-06 14:22:51 +01:00
hid-lg-g15.c HID: lg-g15 + ite: Add MODULE_AUTHOR 2021-05-05 14:39:24 +02:00
hid-lg.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-lg.h
hid-lg2ff.c HID: Fix assumption that devices have inputs 2019-10-03 15:36:40 -04:00
hid-lg3ff.c HID: Fix assumption that devices have inputs 2019-10-03 15:36:40 -04:00
hid-lg4ff.c HID: Fix assumption that devices have inputs 2019-10-03 15:36:40 -04:00
hid-lg4ff.h
hid-lgff.c HID: Fix assumption that devices have inputs 2019-10-03 15:36:40 -04:00
hid-logitech-dj.c HID: add hid_is_usb() function to make it simpler for USB detection 2021-12-02 15:35:57 +01:00
hid-logitech-hidpp.c HID: logitech-hidpp: battery: provide CAPACITY property for newer devices 2021-08-20 14:32:39 +02:00
hid-macally.c HID: macally: Constify macally_id_table 2020-08-17 11:38:49 +02:00
hid-magicmouse.c Merge branch 'for-5.17/magicmouse' into for-linus 2022-01-10 09:58:34 +01:00
hid-maltron.c Support for Maltron L90 keyboard media keys 2019-01-14 20:11:01 +01:00
hid-mcp2221.c HID: mcp2221: Fix GPIO output handling 2020-11-05 11:16:53 +01:00
hid-mf.c HID: mf: add support for 0079:1846 Mayflash/Dragonrise USB Gamecube Adapter 2020-11-25 14:30:33 +01:00
hid-microsoft.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid 2020-09-02 12:55:46 -07:00
hid-monterey.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-multitouch.c HID: hid-input: Add suffix also for HID_DG_PEN 2021-12-14 10:08:40 +01:00
hid-nintendo.c HID: nintendo: eliminate dead datastructures in !CONFIG_NINTENDO_FF case 2021-11-19 15:58:30 +01:00
hid-nti.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-ntrig.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-ortek.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-penmount.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-petalynx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-picolcd.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 265 2019-06-05 17:30:28 +02:00
hid-picolcd_backlight.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 265 2019-06-05 17:30:28 +02:00
hid-picolcd_cir.c media: rc: harmonize infrared durations to microseconds 2020-09-03 16:18:55 +02:00
hid-picolcd_core.c HID: hid-picolcd_core: Remove unused variable 'ret' 2021-04-07 18:46:20 +02:00
hid-picolcd_debugfs.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 265 2019-06-05 17:30:28 +02:00
hid-picolcd_fb.c Merge branch 'for-5.7/appleir' into for-linus 2020-04-01 12:26:12 +02:00
hid-picolcd_lcd.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 265 2019-06-05 17:30:28 +02:00
hid-picolcd_leds.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 265 2019-06-05 17:30:28 +02:00
hid-pl.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
hid-plantronics.c HID: plantronics: Workaround for double volume key presses 2021-03-08 11:08:58 +01:00
hid-playstation.c HID: playstation: fix return from dualsense_player_led_set_brightness() 2021-10-27 10:05:07 +02:00
hid-primax.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
hid-prodikeys.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-quirks.c Merge branch 'for-5.17/apple' into for-linus 2022-01-10 09:54:31 +01:00
hid-redragon.c HID: redragon: fix num lock and caps lock LEDs 2018-06-25 15:23:40 +02:00
hid-retrode.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-rmi.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2020-10-23 16:16:31 -07:00
hid-roccat-arvo.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-roccat-arvo.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-common.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-common.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-isku.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-roccat-isku.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-kone.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-roccat-kone.h HID: roccat: Use struct_group() to zero kone_mouse_event 2021-09-25 08:20:48 -07:00
hid-roccat-koneplus.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-roccat-koneplus.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-konepure.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-roccat-kovaplus.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-roccat-kovaplus.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-lua.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-roccat-lua.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-pyra.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-roccat-pyra.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-ryos.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-roccat-savu.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-roccat-savu.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-saitek.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-samsung.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-semitek.c HID: semitek: new driver for GK6X series keyboards 2021-05-05 14:21:08 +02:00
hid-sensor-custom.c HID: hid-sensor-custom: Process failure of sensor_hub_set_feature() 2021-05-26 12:36:46 +02:00
hid-sensor-hub.c HID: hid-sensor-hub: Return error for hid_set_field() failure 2021-05-05 14:36:18 +02:00
hid-sjoy.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
hid-sony.c HID: sony: fix error path in probe 2021-12-02 15:36:18 +01:00
hid-speedlink.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-steam.c HID: steam: fixes race in handling device list. 2020-06-19 09:21:21 +02:00
hid-steelseries.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-sunplus.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-thrustmaster.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-tivo.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-tmff.c HID: thrustmaster use swap() to make code cleaner 2021-12-14 10:50:23 +01:00
hid-topseed.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-twinhan.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 178 2019-05-30 11:29:19 -07:00
hid-u2fzero.c HID: add hid_is_usb() function to make it simpler for USB detection 2021-12-02 15:35:57 +01:00
hid-uclogic-core.c HID: check for valid USB device for many HID drivers 2021-12-02 15:36:18 +01:00
hid-uclogic-params.c HID: hid-uclogic-params: Invalid parameter check in uclogic_params_frame_init_v1_buttonpad 2022-01-06 15:39:43 +01:00
hid-uclogic-params.h HID: uclogic: Support Gray-coded rotary encoders 2019-02-21 12:00:54 +01:00
hid-uclogic-rdesc.c HID: hid-uclogic-rdesc: Kernel-doc is for functions and structs 2021-04-07 18:46:20 +02:00
hid-uclogic-rdesc.h HID: uclogic: Add support for Ugee G5 2019-02-21 12:00:54 +01:00
hid-udraw-ps3.c HID: udraw-ps3: Replace HTTP links with HTTPS ones 2020-07-20 12:24:41 +02:00
hid-viewsonic.c HID: viewsonic: Support PD1011 signature pad 2019-02-21 12:00:53 +01:00
hid-vivaldi.c HID: vivaldi: Minor cleanups 2022-01-14 11:52:13 +01:00
hid-waltop.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-wiimote-core.c HID: wiimote: remove h from printk format specifier 2021-01-07 10:14:58 +01:00
hid-wiimote-debug.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-wiimote-modules.c HID: Wiimote: Treat the d-pad as an analogue stick 2020-06-19 14:17:22 +02:00
hid-wiimote.h HID: Wiimote: Treat the d-pad as an analogue stick 2020-06-19 14:17:22 +02:00
hid-xiaomi.c HID: Add support for side buttons of Xiaomi Mi Dual Mode Wireless Mouse Silent 2021-09-22 11:53:07 +02:00
hid-xinmo.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-zpff.c HID: Fix assumption that devices have inputs 2019-10-03 15:36:40 -04:00
hid-zydacron.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hidraw.c HID: hidraw: Replace hidraw device table mutex with a rwsem 2021-12-14 10:52:18 +01:00
Kconfig HID: Add new Letsketch tablet driver 2022-01-06 14:22:51 +01:00
Makefile HID: Add new Letsketch tablet driver 2022-01-06 14:22:51 +01:00
uhid.c HID: uhid: Use READ_ONCE()/WRITE_ONCE() for ->running 2022-01-19 15:59:05 +01:00
wacom.h HID: wacom: generic: Treat serial number and related fields as unsigned 2019-11-06 21:37:29 +01:00
wacom_sys.c HID: wacom: fix problems when device is not a valid USB device 2021-12-02 15:36:12 +01:00
wacom_wac.c HID: wacom: Reset expected and received contact counts at the same time 2022-01-21 15:10:02 +01:00
wacom_wac.h HID: wacom: Use "Confidence" flag to prevent reporting invalid contacts 2021-11-10 10:02:06 +01:00