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platform/surface: tabletsw: Fix __le32 integer access

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The sources.count field is a __le32 inside a packed struct. So use the
proper functions to access it.

Reported-by: kernel test robot <lkp@intel.com>
Fixes: 9f794056db ("platform/surface: Add KIP/POS tablet-mode switch driver")
Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com>
Link: https://lore.kernel.org/r/20220717120735.2052160-1-luzmaximilian@gmail.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Maximilian Luz 2022-07-17 14:07:35 +02:00 committed by Hans de Goede
parent 5c8b3f1156
commit 7a4a04f4e9
1 changed files with 2 additions and 2 deletions
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4
drivers/platform/surface/surface_aggregator_tabletsw.c
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@ -410,7 +410,7 @@ static int ssam_pos_get_source(struct ssam_tablet_sw *sw, u32 *source_id)
if (status)
return status;
if (sources.count == 0) {
if (get_unaligned_le32(&sources.count) == 0) {
dev_err(&sw->sdev->dev, "no posture sources found\n");
return -ENODEV;
}
@ -422,7 +422,7 @@ static int ssam_pos_get_source(struct ssam_tablet_sw *sw, u32 *source_id)
* is a device that provides multiple sources, at which point we can
* then try to figure out how to handle them.
*/
WARN_ON(sources.count > 1);
WARN_ON(get_unaligned_le32(&sources.count) > 1);
*source_id = get_unaligned_le32(&sources.id[0]);
return 0;