V4L/DVB: gspca - main: Restart streaming after reqbuf

Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index 4fb031cfb64..9c9d7ea7e62 100644
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -1503,7 +1503,7 @@ static int vidioc_reqbufs(struct file *file, void *priv,
                           struct v4l2_requestbuffers *rb)
 {
         struct gspca_dev *gspca_dev = priv;
-        int i, ret = 0;
+        int i, ret = 0, streaming;
 
         switch (rb->memory) {
         case GSPCA_MEMORY_READ:                 /* (internal call) */
@@ -1538,7 +1538,8 @@ static int vidioc_reqbufs(struct file *file, void *priv,
         }
 
         /* stop streaming */
-        if (gspca_dev->streaming) {
+        streaming = gspca_dev->streaming;
+        if (streaming) {
                 mutex_lock(&gspca_dev->usb_lock);
                 gspca_dev->usb_err = 0;
                 gspca_stream_off(gspca_dev);
@@ -1557,6 +1558,8 @@ static int vidioc_reqbufs(struct file *file, void *priv,
         if (ret == 0) {
                 rb->count = gspca_dev->nframes;
                 gspca_dev->capt_file = file;
+                if (streaming)
+                        ret = gspca_init_transfer(gspca_dev);
         }
 out:
         mutex_unlock(&gspca_dev->queue_lock);