media: rkvdec: Add required padding

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The addresses of two elements of the segmap[][] member are passed to the
hardware which expects 128-bit aligned addresses. However, without this
patch offsetof(struct rkvdec_vp9_priv_tbl, segmap[0]) is an odd number
(2421) but the hardware just ignores the 5 least significant bits of the
address. As a result, the hardware writes the segmentation map to incorrect
locations.

Inserting 11 bytes of padding corrects this situation by making the said
addresses divisible by 16 (i.e. aligned on a 128-bit boundary).

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Fixes: f25709c4ff ("media: rkvdec: Add the VP9 backend")
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

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Andrzej Pietrasiewicz 2022-10-27 10:02:17 +02:00 • committed by Hans Verkuil

parent 5b16db4fbb

commit 00c47aa85b

1 changed files with 3 additions and 0 deletions

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drivers/staging/media/rkvdec/rkvdec-vp9.c

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