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[media] hdpvr: fix race conditon during start of streaming

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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>
CC: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Janne Grunau 2012-02-02 13:35:21 -03:00 committed by Mauro Carvalho Chehab
parent 63ae37ea51
commit afa159538a
1 changed files with 2 additions and 1 deletions
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3
drivers/media/video/hdpvr/hdpvr-video.c
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@ -283,12 +283,13 @@ static int hdpvr_start_streaming(struct hdpvr_device *dev)
hdpvr_config_call(dev, CTRL_START_STREAMING_VALUE, 0x00); hdpvr_config_call(dev, CTRL_START_STREAMING_VALUE, 0x00);
dev->status = STATUS_STREAMING;
INIT_WORK(&dev->worker, hdpvr_transmit_buffers); INIT_WORK(&dev->worker, hdpvr_transmit_buffers);
queue_work(dev->workqueue, &dev->worker); queue_work(dev->workqueue, &dev->worker);
v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
"streaming started\n"); "streaming started\n");
dev->status = STATUS_STREAMING;
return 0; return 0;
} }