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media: cedrus: Fix SUNXI tile size calculation

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Tiled formats requires full rows being allocated (even for Chroma
planes). When the number of Luma tiles is odd, we need to round up
to twice the tile width in order to roundup the number of Chroma
tiles.

This was notice with a crash running BA1_FT_C compliance test using
sunxi tiles using GStreamer. Cedrus driver would allocate 9 rows for
Luma, but only 4.5 rows for Chroma, causing userspace to crash.

Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Fixes: 50e761516f ("media: platform: Add Cedrus VPU decoder driver")
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Nicolas Dufresne 2021-08-19 16:00:09 +02:00 committed by Mauro Carvalho Chehab
parent 95a10c4eb3
commit 448ea5ee47
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/media/sunxi/cedrus/cedrus_video.c
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@ -135,7 +135,7 @@ void cedrus_prepare_format(struct v4l2_pix_format *pix_fmt)
sizeimage = bytesperline * height;
/* Chroma plane size. */
sizeimage += bytesperline * height / 2;
sizeimage += bytesperline * ALIGN(height, 64) / 2;
break;