hdpvr: fix race conditon during start of streaming

commit afa159538af61f1a65d48927f4e949fe514fb4fc upstream.

status has to be set to STREAMING before the streaming worker is
queued. hdpvr_transmit_buffers() will exit immediately otherwise.

Reported-by: Joerg Desch <vvd.joede@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/media/video/hdpvr/hdpvr-video.c b/drivers/media/video/hdpvr/hdpvr-video.c
index 2eb9dc2ebe59797a9ffeac30eea0dbbd7eeae504..09f0ee0d1f4ee94b53b27c715eea48d010a8d122 100644 (file)
--- a/drivers/media/video/hdpvr/hdpvr-video.c
+++ b/drivers/media/video/hdpvr/hdpvr-video.c
@@ -279,12 +279,13 @@ static int hdpvr_start_streaming(struct hdpvr_device *dev)
 
                hdpvr_config_call(dev, CTRL_START_STREAMING_VALUE, 0x00);
 
+               dev->status = STATUS_STREAMING;
+
                INIT_WORK(&dev->worker, hdpvr_transmit_buffers);
                queue_work(dev->workqueue, &dev->worker);
 
                v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
                         "streaming started\n");
-               dev->status = STATUS_STREAMING;
 
                return 0;
        }