target/linux/brcm2708/patches-3.10/0133-V4L2-Fix-issue-of-driver-jamming-if-STREAMON-failed.patch

   1 From a29f4da13057535935fb2b390b01b46b4a4d133b Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dsteve@broadcom.com>
   3 Date: Mon, 9 Dec 2013 11:05:24 +0000
   4 Subject: [PATCH 133/174] V4L2: Fix issue of driver jamming if STREAMON failed.
   5
   6 Fix issue where the driver was left in a partially enabled
   7 state if STREAMON failed, and would then reject many IOCTLs
   8 as it thought it was streaming.
   9
  10 Signed-off-by: Dave Stevenson <dsteve@broadcom.com>
  11 ---
  12  drivers/media/platform/bcm2835/bcm2835-camera.c | 10 +++++++++-
  13  1 file changed, 9 insertions(+), 1 deletion(-)
  14
  15 --- a/drivers/media/platform/bcm2835/bcm2835-camera.c
  16 +++ b/drivers/media/platform/bcm2835/bcm2835-camera.c
  17 @@ -425,7 +425,15 @@ static int start_streaming(struct vb2_qu
  18             vchiq_mmal_port_enable(dev->instance, dev->capture.port, buffer_cb);
  19         if (ret) {
  20                 v4l2_err(&dev->v4l2_dev,
  21 -                        "Failed to enable capture port - error %d\n", ret);
  22 +                       "Failed to enable capture port - error %d. "
  23 +                       "Disabling camera port again\n", ret);
  24 +
  25 +               vchiq_mmal_port_disable(dev->instance,
  26 +                                       dev->capture.camera_port);
  27 +               if (disable_camera(dev) < 0) {
  28 +                       v4l2_err(&dev->v4l2_dev, "Failed to disable camera");
  29 +                       return -EINVAL;
  30 +               }
  31                 return -1;
  32         }
  33