diff options
| author | Aaron Armstrong Skomra <aaron.skomra@wacom.com> | 2023-07-26 01:20:25 +0300 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2023-08-14 12:43:57 +0300 |
| commit | 9ac6678b95b0dd9458a7a6869f46e51cd55a1d84 (patch) | |
| tree | 56e9a7ac651b57bf8253d727dc569d53b67ef0bb /drivers/hid/wacom_wac.h | |
| parent | 1d7546042f8fdc4bc39ab91ec966203e2d64f8bd (diff) | |
| download | linux-9ac6678b95b0dd9458a7a6869f46e51cd55a1d84.tar.xz | |
HID: wacom: remove the battery when the EKR is off
Currently the EKR battery remains even after we stop getting information
from the device. This can lead to a stale battery persisting indefinitely
in userspace.
The remote sends a heartbeat every 10 seconds. Delete the battery if we
miss two heartbeats (after 21 seconds). Restore the battery once we see
a heartbeat again.
Signed-off-by: Aaron Skomra <skomra@gmail.com>
Signed-off-by: Aaron Armstrong Skomra <aaron.skomra@wacom.com>
Reviewed-by: Jason Gerecke <jason.gerecke@wacom.com>
Fixes: 9f1015d45f62 ("HID: wacom: EKR: attach the power_supply on first connection")
CC: stable@vger.kernel.org
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 ee21bb260f22..2e7cc5e7a0cb 100644 --- a/drivers/hid/wacom_wac.h +++ b/drivers/hid/wacom_wac.h @@ -13,6 +13,7 @@ #define WACOM_NAME_MAX 64 #define WACOM_MAX_REMOTES 5 #define WACOM_STATUS_UNKNOWN 255 +#define WACOM_REMOTE_BATTERY_TIMEOUT 21000000000ll /* packet length for individual models */ #define WACOM_PKGLEN_BBFUN 9 |