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| author | Philipp Zabel <p.zabel@pengutronix.de> | 2019-06-18 12:45:10 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-07-26 09:10:33 +0200 |
| commit | 2d8e49ffcb63f23726c561247f9e19b61f6e7ac6 (patch) | |
| tree | 5de5f33b3cf3b4f5be7181a15319ced4476cff2a /drivers/media | |
| parent | 2d04fe8a5c590ab70235638fab038456abb67eb7 (diff) | |
| download | linux-stable-2d8e49ffcb63f23726c561247f9e19b61f6e7ac6.tar.gz linux-stable-2d8e49ffcb63f23726c561247f9e19b61f6e7ac6.tar.bz2 linux-stable-2d8e49ffcb63f23726c561247f9e19b61f6e7ac6.zip | |
media: coda: fix mpeg2 sequence number handling
[ Upstream commit 56d159a4ec6d8da7313aac6fcbb95d8fffe689ba ]
Sequence number handling assumed that the BIT processor frame number
starts counting at 1, but this is not true for the MPEG-2 decoder,
which starts at 0. Fix the sequence counter offset detection to handle
this.
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>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/platform/coda/coda-bit.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/media/platform/coda/coda-bit.c b/drivers/media/platform/coda/coda-bit.c index 976f6aa69f41..1eeed34f300d 100644 --- a/drivers/media/platform/coda/coda-bit.c +++ b/drivers/media/platform/coda/coda-bit.c @@ -1739,6 +1739,7 @@ static int __coda_start_decoding(struct coda_ctx *ctx) v4l2_err(&dev->v4l2_dev, "CODA_COMMAND_SEQ_INIT timeout\n"); return ret; } + ctx->sequence_offset = ~0U; ctx->initialized = 1; /* Update kfifo out pointer from coda bitstream read pointer */ @@ -2151,7 +2152,9 @@ static void coda_finish_decode(struct coda_ctx *ctx) v4l2_err(&dev->v4l2_dev, "decoded frame index out of range: %d\n", decoded_idx); } else { - val = coda_read(dev, CODA_RET_DEC_PIC_FRAME_NUM) - 1; + val = coda_read(dev, CODA_RET_DEC_PIC_FRAME_NUM); + if (ctx->sequence_offset == -1) + ctx->sequence_offset = val; val -= ctx->sequence_offset; spin_lock(&ctx->buffer_meta_lock); if (!list_empty(&ctx->buffer_meta_list)) { |