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| author |   Aaron Armstrong Skomra <skomra@gmail.com> | 2019-05-10 15:31:16 -0700 |
|---|---|---|
| committer |   Jiri Kosina <jkosina@suse.cz> | 2019-05-17 13:56:06 +0200 |
| commit | d8e9806005f28bbb49899dab2068e3359e22ba35 (patch) | |
| tree | 60614b16841db73d6dec1c99b9c271b35720398a /drivers/hid/wacom_wac.h | |
| parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid (diff) | |
| download | wireguard-linux-d8e9806005f28bbb49899dab2068e3359e22ba35.tar.xz wireguard-linux-d8e9806005f28bbb49899dab2068e3359e22ba35.zip | |
HID: wacom: generic: only switch the mode on devices with LEDs
Currently, the driver will attempt to set the mode on all
devices with a center button, but some devices with a center
button lack LEDs, and attempting to set the LEDs on devices
without LEDs results in the kernel error message of the form:
"leds input8::wacom-0.1: Setting an LED's brightness failed (-32)"
This is because the generic codepath erroneously assumes that the
BUTTON_CENTER usage indicates that the device has LEDs, the
previously ignored TOUCH_RING_SETTING usage is a more accurate
indication of the existence of LEDs on the device.
Fixes: 10c55cacb8b2 ("HID: wacom: generic: support LEDs")
Cc: <stable@vger.kernel.org> # v4.11+
Signed-off-by: Aaron Armstrong Skomra <aaron.skomra@wacom.com>
Reviewed-by: Jason Gerecke <jason.gerecke@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/wacom_wac.h')
| -rw-r--r-- | drivers/hid/wacom_wac.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/hid/wacom_wac.h b/drivers/hid/wacom_wac.h index 295fd3718caa..f67d871841c0 100644 --- a/drivers/hid/wacom_wac.h +++ b/drivers/hid/wacom_wac.h @@ -145,6 +145,7 @@ #define WACOM_HID_WD_OFFSETBOTTOM (WACOM_HID_UP_WACOMDIGITIZER | 0x0d33) #define WACOM_HID_WD_DATAMODE (WACOM_HID_UP_WACOMDIGITIZER | 0x1002) #define WACOM_HID_WD_DIGITIZERINFO (WACOM_HID_UP_WACOMDIGITIZER | 0x1013) +#define WACOM_HID_WD_TOUCH_RING_SETTING (WACOM_HID_UP_WACOMDIGITIZER | 0x1032) #define WACOM_HID_UP_G9 0xff090000 #define WACOM_HID_G9_PEN (WACOM_HID_UP_G9 | 0x02) #define WACOM_HID_G9_TOUCHSCREEN (WACOM_HID_UP_G9 | 0x11) |