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iio: orientation: hid-sensor-rotation: fix quaternion alignment

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Restore the alignment of sampled_vals to 16 bytes by using
IIO_DECLARE_QUATERNION(). This field contains a quaternion value which
has scan_type.repeat = 4 and storagebits = 32. So the alignment must
be 16 bytes to match the assumptions of iio_storage_bytes_for_si() and
also to not break userspace.

Reported-by: Lixu Zhang <lixu.zhang@intel.com>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=221077
Fixes: b31a74075c ("iio: orientation: hid-sensor-rotation: remove unnecessary alignment")
Tested-by: Lixu Zhang <lixu.zhang@intel.com>
Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
David Lechner
2026-02-28 14:02:23 -06:00
committed by Jonathan Cameron
parent 56bd57e7b1
commit 50d4cc74b8
1 changed files with 1 additions and 1 deletions
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2
drivers/iio/orientation/hid-sensor-rotation.c
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@@ -19,7 +19,7 @@ struct dev_rot_state {
struct hid_sensor_common common_attributes;
struct hid_sensor_hub_attribute_info quaternion;
struct {
s32 sampled_vals[4];
IIO_DECLARE_QUATERNION(s32, sampled_vals);
aligned_s64 timestamp;
} scan;
int scale_pre_decml;