target/linux/bcm27xx/patches-5.15/950-0752-drivers-staging-bcm2835-isp-Do-not-cleanup-mmal-vcsm.patch

   1 From 85c2fec6528038bd200c4999978a7c2a7e86a407 Mon Sep 17 00:00:00 2001
   2 From: Naushir Patuck <naush@raspberrypi.com>
   3 Date: Thu, 3 Mar 2022 16:45:53 +0000
   4 Subject: [PATCH] drivers: staging: bcm2835-isp: Do not cleanup mmal
   5  vcsm buffer on stop_streaming
   6
   7 On stop_streaming() the vcsm buffer handle gets released by the buffer cleanup
   8 code.  This will subsequently cause and error if userland re-queues the same
   9 buffer on the next start_streaming() call.
  10
  11 Remove this cleanup code and rely on the vb2_ops->buf_cleanup() call to do the
  12 cleanups instead.
  13
  14 Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
  15 ---
  16  .../staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c | 9 ---------
  17  1 file changed, 9 deletions(-)
  18
  19 --- a/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
  20 +++ b/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
  21 @@ -622,7 +622,6 @@ static void bcm2835_isp_node_stop_stream
  22  {
  23         struct bcm2835_isp_node *node = vb2_get_drv_priv(q);
  24         struct bcm2835_isp_dev *dev = node_get_dev(node);
  25 -       unsigned int i;
  26         int ret;
  27
  28         v4l2_dbg(1, debug, &dev->v4l2_dev, "%s: node %s[%d], mmal port %p\n",
  29 @@ -653,14 +652,6 @@ static void bcm2835_isp_node_stop_stream
  30                 }
  31         }
  32
  33 -       /* Release the VCSM handle here to release the associated dmabuf */
  34 -       for (i = 0; i < q->num_buffers; i++) {
  35 -               struct vb2_v4l2_buffer *vb2 = to_vb2_v4l2_buffer(q->bufs[i]);
  36 -               struct bcm2835_isp_buffer *buf =
  37 -                       container_of(vb2, struct bcm2835_isp_buffer, vb);
  38 -               bcm2835_isp_mmal_buf_cleanup(&buf->mmal);
  39 -       }
  40 -
  41         atomic_dec(&dev->num_streaming);
  42         /* If all ports disabled, then disable the component */
  43         if (atomic_read(&dev->num_streaming) == 0) {