gspca-core: Fix buffers staying in queued state after a stream_off

commit af05ef01e9cde84620c6855a8d8ab9c8a1db9009 upstream.

This fixes a regression introduced by commit f7059ea and should be
backported to all supported stable kernels which have this commit.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Antonio Ospite <ospite@studenti.unina.it>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index 2ca10df..981501f 100644 (file)
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -1697,7 +1697,7 @@ static int vidioc_streamoff(struct file *file, void *priv,
                                enum v4l2_buf_type buf_type)
 {
        struct gspca_dev *gspca_dev = priv;
-       int ret;
+       int i, ret;
 
        if (buf_type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
                return -EINVAL;
@@ -1728,6 +1728,8 @@ static int vidioc_streamoff(struct file *file, void *priv,
        wake_up_interruptible(&gspca_dev->wq);
 
        /* empty the transfer queues */
+       for (i = 0; i < gspca_dev->nframes; i++)
+               gspca_dev->frame[i].v4l2_buf.flags &= ~BUF_ALL_FLAGS;
        atomic_set(&gspca_dev->fr_q, 0);
        atomic_set(&gspca_dev->fr_i, 0);
        gspca_dev->fr_o = 0;