linux-kernel - [PATCH] media: v4l2-mem2mem: Fix spurious v4l2_m2m_buf

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Date:   Mon, 28 Sep 2020 11:03:34 -0300
From:   Ezequiel Garcia <ezequiel@...labora.com>
To:     linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Tomasz Figa <tfiga@...omium.org>, kernel@...labora.com,
        Hans Verkuil <hverkuil@...all.nl>,
        Adrian Ratiu <adrian.ratiu@...labora.com>,
        Ezequiel Garcia <ezequiel@...labora.com>
Subject: [PATCH] media: v4l2-mem2mem: Fix spurious v4l2_m2m_buf_done

A seemingly bad rebase introduced a spurious v4l2_m2m_buf_done,
which releases a buffer twice and therefore triggers a
noisy warning on each job:

WARNING: CPU: 0 PID: 0 at drivers/media/common/videobuf2/videobuf2-core.c:986 vb2_buffer_done+0x208/0x2a0

Fix it by removing the spurious v4l2_m2m_buf_done.

Reported-by: Adrian Ratiu <adrian.ratiu@...labora.com>
Fixes: 911ea8ec42dea ("media: v4l2-mem2mem: add v4l2_m2m_suspend, v4l2_m2m_resume")
Signed-off-by: Ezequiel Garcia <ezequiel@...labora.com>
---
 drivers/media/v4l2-core/v4l2-mem2mem.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c
index f626ba5ee3d9..b221b4e438a1 100644
--- a/drivers/media/v4l2-core/v4l2-mem2mem.c
+++ b/drivers/media/v4l2-core/v4l2-mem2mem.c
@@ -516,7 +516,6 @@ void v4l2_m2m_buf_done_and_job_finish(struct v4l2_m2m_dev *m2m_dev,
 
 	if (WARN_ON(!src_buf || !dst_buf))
 		goto unlock;
-	v4l2_m2m_buf_done(src_buf, state);
 	dst_buf->is_held = src_buf->flags & V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF;
 	if (!dst_buf->is_held) {
 		v4l2_m2m_dst_buf_remove(m2m_ctx);
-- 
2.27.0