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media: coda: clear error return value before picture run

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[ Upstream commit bbeefa7357 ]

The error return value is not written by some firmware codecs, such as
MPEG-2 decode on CodaHx4. Clear the error return value before starting
the picture run to avoid misinterpreting unrelated values returned by
sequence initialization as error return value.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Philipp Zabel
2019-04-08 08:32:49 -04:00
committed by Greg Kroah-Hartman
parent 9380764a98
commit e3493222d3
1 changed files with 3 additions and 0 deletions
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3
drivers/media/platform/coda/coda-bit.c
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@@ -1948,6 +1948,9 @@ static int coda_prepare_decode(struct coda_ctx *ctx)
/* Clear decode success flag */
coda_write(dev, 0, CODA_RET_DEC_PIC_SUCCESS);
/* Clear error return value */
coda_write(dev, 0, CODA_RET_DEC_PIC_ERR_MB);
trace_coda_dec_pic_run(ctx, meta);
coda_command_async(ctx, CODA_COMMAND_PIC_RUN);