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Commit 18bf99aa authored by Jean-François Moine's avatar Jean-François Moine Committed by Mauro Carvalho Chehab
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V4L/DVB: gspca - main: Check the file doing stream on/off 



Signed-off-by: default avatarJean-François Moine <moinejf@free.fr>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 0b62b737

drivers/media/video/gspca/gspca.c

+12 −0
Original line number Diff line number Diff line
@@ -1590,6 +1590,12 @@ static int vidioc_streamon(struct file *file, void *priv, 
	if (mutex_lock_interruptible(&gspca_dev->queue_lock))

		return -ERESTARTSYS;



	/* check the capture file */

	if (gspca_dev->capt_file != file) {

		ret = -EBUSY;

		goto out;

	}



	if (gspca_dev->nframes == 0

	    || !(gspca_dev->frame[0].v4l2_buf.flags & V4L2_BUF_FLAG_QUEUED)) {

		ret = -EINVAL;
@@ -1627,6 +1633,12 @@ static int vidioc_streamoff(struct file *file, void *priv, 
	if (mutex_lock_interruptible(&gspca_dev->queue_lock))

		return -ERESTARTSYS;



	/* check the capture file */

	if (gspca_dev->capt_file != file) {

		ret = -EBUSY;

		goto out;

	}



	/* stop streaming */

	if (mutex_lock_interruptible(&gspca_dev->usb_lock)) {

		ret = -ERESTARTSYS;