David Lechner 79a86a6cc3 iio: orientation: hid-sensor-rotation: add timestamp hack to not break userspace ... Add a hack to push two timestamps in the hid-sensor-rotation scan data to avoid breaking userspace applications that depend on the timestamp being at the incorrect location in the scan data due to unintentional misalignment in older kernels. When this driver was written, the timestamp was in the correct location because of the way iio_compute_scan_bytes() was implemented at the time. (Samples were 24 bytes each.) Then commit 883f616530 ("iio: buffer: align the size of scan bytes to size of the largest element") changed the computed scan_bytes to be a different size (32 bytes), which caused iio_push_to_buffers_with_timestamp() to place the timestamp at an incorrect offset. There have been long periods of time (6 years each) where the timestamp was in either location, so to not break either case, we open-code the timestamps to be pushed to both locations in the scan data. Reported-by: Jonathan Cameron <jic23@kernel.org> Closes: https://lore.kernel.org/linux-iio/20260215162351.79f40b32@jic23-huawei/ Fixes: 883f616530 ("iio: buffer: align the size of scan bytes to size of the largest element") Signed-off-by: David Lechner <dlechner@baylibre.com> Reviewed-by: Nuno Sá <nuno.sa@analog.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>		2026-03-14 12:15:58 +00:00
..
hid-sensor-incl-3d.c	iio: normalize array sentinel style	2025-04-22 19:10:04 +01:00
hid-sensor-rotation.c	iio: orientation: hid-sensor-rotation: add timestamp hack to not break userspace	2026-03-14 12:15:58 +00:00
Kconfig	iio: hid-sensors: select IIO_TRIGGERED_BUFFER under HID_SENSOR_IIO_TRIGGER	2021-05-10 14:01:48 +01:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00