From b35ad716845db394d9850d123d3617653f26a921 Mon Sep 17 00:00:00 2001 From: Dave Stevenson Date: Sun, 13 Dec 2020 16:54:43 +0000 Subject: [PATCH] staging/vc04_services/codec: Clear last buf dequeued flag on START It appears that the V4L2 M2M framework requires the driver to manually call vb2_clear_last_buffer_dequeued on the CAPTURE queue during a V4L2_DEC_CMD_START. Add such a call. Signed-off-by: Dave Stevenson --- .../staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c +++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c @@ -1780,6 +1780,7 @@ static int vidioc_decoder_cmd(struct fil { struct bcm2835_codec_ctx *ctx = file2ctx(file); struct bcm2835_codec_q_data *q_data = &ctx->q_data[V4L2_M2M_SRC]; + struct vb2_queue *dst_vq; int ret; v4l2_dbg(2, debug, &ctx->dev->v4l2_dev, "%s, cmd %u", __func__, @@ -1815,7 +1816,9 @@ static int vidioc_decoder_cmd(struct fil break; case V4L2_DEC_CMD_START: - /* Do we need to do anything here? */ + dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, + V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE); + vb2_clear_last_buffer_dequeued(dst_vq); break; default: