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authorNicolas Dufresne <nicolas.dufresne@collabora.com>2022-04-26 15:57:28 +0300
committerMauro Carvalho Chehab <mchehab@kernel.org>2022-05-13 15:58:48 +0300
commit86ef61ad686c176f1853a0e8b7f809f21cfadbb2 (patch)
treea5b39e4df65947832a36f497b28fff5b5e4544da /drivers/media
parent804e192a81149ef43ccaf09ac65b264813ad511b (diff)
downloadlinux-86ef61ad686c176f1853a0e8b7f809f21cfadbb2.tar.xz
media: v4l2-mem2mem: Trace on implicit un-hold
If the timestamp of the src buffer differs from the timestamp of a held dst buffer, the held buffer is implicitly removed and marked as done. Add a trace to help debugging if someone hits that case. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Sebastian Fricke <sebastian.fricke@collabora.com> Reviewed-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Diffstat (limited to 'drivers/media')
-rw-r--r--drivers/media/v4l2-core/v4l2-mem2mem.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c
index 9d32d8c71e45..6469f9a25a4e 100644
--- a/drivers/media/v4l2-core/v4l2-mem2mem.c
+++ b/drivers/media/v4l2-core/v4l2-mem2mem.c
@@ -336,6 +336,7 @@ static void __v4l2_m2m_try_queue(struct v4l2_m2m_dev *m2m_dev,
if (src && dst && dst->is_held &&
dst->vb2_buf.copied_timestamp &&
dst->vb2_buf.timestamp != src->vb2_buf.timestamp) {
+ dprintk("Timestamp mismatch, returning held capture buffer\n");
dst->is_held = false;
v4l2_m2m_dst_buf_remove(m2m_ctx);
v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);