target/linux/bcm27xx/patches-6.1/950-1010-media-rp1-cfe-Fail-streaming-if-FE_CONFIG-node-is-no.patch

   1 From 3e2203b265ddd8630fea0fbb69b3a2ec1496f773 Mon Sep 17 00:00:00 2001
   2 From: Naushir Patuck <naush@raspberrypi.com>
   3 Date: Wed, 4 Oct 2023 09:39:59 +0100
   4 Subject: [PATCH] media: rp1: cfe: Fail streaming if FE_CONFIG node is not
   5  enabled
   6
   7 When the FE is enabled, ensure that the FE_CONFIG node is enabled.
   8 Otherwise fail cfe_start_streaming() entirely.
   9
  10 Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
  11 ---
  12  drivers/media/platform/raspberrypi/rp1_cfe/cfe.c | 8 ++++++++
  13  1 file changed, 8 insertions(+)
  14
  15 --- a/drivers/media/platform/raspberrypi/rp1_cfe/cfe.c
  16 +++ b/drivers/media/platform/raspberrypi/rp1_cfe/cfe.c
  17 @@ -997,6 +997,14 @@ static int cfe_start_streaming(struct vb
  18                 goto err_streaming;
  19         }
  20
  21 +       /* When using the Frontend, we must enable the FE_CONFIG node. */
  22 +       if (is_fe_enabled(cfe) &&
  23 +           !check_state(cfe, NODE_ENABLED, cfe->node[FE_CONFIG].id)) {
  24 +               cfe_err("FE enabled, but FE_CONFIG node is not\n");
  25 +               ret = -EINVAL;
  26 +               goto err_streaming;
  27 +       }
  28 +
  29         ret = media_pipeline_start(&node->pad, &cfe->pipe);
  30         if (ret < 0) {
  31                 cfe_err("Failed to start media pipeline: %d\n", ret);