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| author | Jason Gerecke <jason.gerecke@wacom.com> | 2023-06-08 23:38:28 +0200 |
|---|---|---|
| committer | Benjamin Tissoires <bentiss@kernel.org> | 2023-06-26 16:09:28 +0200 |
| commit | 9a6c0e28e215535b2938c61ded54603b4e5814c5 (patch) | |
| tree | c64340fadca7b38d39e11a5b69411164ba464b53 /drivers/hid/wacom_wac.h | |
| parent | selftests: hid: Add touch tests for Wacom devices (diff) | |
| download | linux-9a6c0e28e215535b2938c61ded54603b4e5814c5.tar.xz linux-9a6c0e28e215535b2938c61ded54603b4e5814c5.zip | |
HID: wacom: Use ktime_t rather than int when dealing with timestamps
Code which interacts with timestamps needs to use the ktime_t type
returned by functions like ktime_get. The int type does not offer
enough space to store these values, and attempting to use it is a
recipe for problems. In this particular case, overflows would occur
when calculating/storing timestamps leading to incorrect values being
reported to userspace. In some cases these bad timestamps cause input
handling in userspace to appear hung.
Link: https://gitlab.freedesktop.org/libinput/libinput/-/issues/901
Fixes: 17d793f3ed53 ("HID: wacom: insert timestamp to packed Bluetooth (BT) events")
CC: stable@vger.kernel.org
Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Link: https://lore.kernel.org/r/20230608213828.2108-1-jason.gerecke@wacom.com
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Diffstat (limited to 'drivers/hid/wacom_wac.h')
| -rw-r--r-- | drivers/hid/wacom_wac.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hid/wacom_wac.h b/drivers/hid/wacom_wac.h index 1a40bb8c5810..ee21bb260f22 100644 --- a/drivers/hid/wacom_wac.h +++ b/drivers/hid/wacom_wac.h @@ -324,7 +324,7 @@ struct hid_data { int ps_connected; bool pad_input_event_flag; unsigned short sequence_number; - int time_delayed; + ktime_t time_delayed; }; struct wacom_remote_data { |