target/linux/bcm27xx/patches-5.10/950-0407-staging-vc04_services-codec-Clear-last-buf-dequeued-.patch

   1 From b35ad716845db394d9850d123d3617653f26a921 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Sun, 13 Dec 2020 16:54:43 +0000
   4 Subject: [PATCH] staging/vc04_services/codec: Clear last buf dequeued
   5  flag on START
   6
   7 It appears that the V4L2 M2M framework requires the driver to manually
   8 call vb2_clear_last_buffer_dequeued on the CAPTURE queue during a
   9 V4L2_DEC_CMD_START.
  10 Add such a call.
  11
  12 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  13 ---
  14  .../staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c | 5 ++++-
  15  1 file changed, 4 insertions(+), 1 deletion(-)
  16
  17 --- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
  18 +++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
  19 @@ -1780,6 +1780,7 @@ static int vidioc_decoder_cmd(struct fil
  20  {
  21         struct bcm2835_codec_ctx *ctx = file2ctx(file);
  22         struct bcm2835_codec_q_data *q_data = &ctx->q_data[V4L2_M2M_SRC];
  23 +       struct vb2_queue *dst_vq;
  24         int ret;
  25
  26         v4l2_dbg(2, debug, &ctx->dev->v4l2_dev, "%s, cmd %u", __func__,
  27 @@ -1815,7 +1816,9 @@ static int vidioc_decoder_cmd(struct fil
  28                 break;
  29
  30         case V4L2_DEC_CMD_START:
  31 -               /* Do we need to do anything here? */
  32 +               dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
  33 +                                        V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
  34 +               vb2_clear_last_buffer_dequeued(dst_vq);
  35                 break;
  36
  37         default: