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path: root/drivers/media/video
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-rw-r--r--drivers/media/video/vivi.c48
1 files changed, 4 insertions, 44 deletions
diff --git a/drivers/media/video/vivi.c b/drivers/media/video/vivi.c
index cdef622f6b32..82755091648b 100644
--- a/drivers/media/video/vivi.c
+++ b/drivers/media/video/vivi.c
@@ -170,7 +170,6 @@ struct vivi_dev {
170 int users; 170 int users;
171 171
172 /* various device info */ 172 /* various device info */
173 unsigned int resources;
174 struct video_device vfd; 173 struct video_device vfd;
175 174
176 struct vivi_dmaqueue vidq; 175 struct vivi_dmaqueue vidq;
@@ -727,40 +726,6 @@ static struct videobuf_queue_ops vivi_video_qops = {
727}; 726};
728 727
729/* ------------------------------------------------------------------ 728/* ------------------------------------------------------------------
730 IOCTL handling
731 ------------------------------------------------------------------*/
732
733
734static int res_get(struct vivi_dev *dev, struct vivi_fh *fh)
735{
736 /* is it free? */
737 mutex_lock(&dev->lock);
738 if (dev->resources) {
739 /* no, someone else uses it */
740 mutex_unlock(&dev->lock);
741 return 0;
742 }
743 /* it's free, grab it */
744 dev->resources =1;
745 dprintk(1,"res: get\n");
746 mutex_unlock(&dev->lock);
747 return 1;
748}
749
750static int res_locked(struct vivi_dev *dev)
751{
752 return (dev->resources);
753}
754
755static void res_free(struct vivi_dev *dev, struct vivi_fh *fh)
756{
757 mutex_lock(&dev->lock);
758 dev->resources = 0;
759 dprintk(1,"res: put\n");
760 mutex_lock(&dev->lock);
761}
762
763/* ------------------------------------------------------------------
764 IOCTL vidioc handling 729 IOCTL vidioc handling
765 ------------------------------------------------------------------*/ 730 ------------------------------------------------------------------*/
766static int vidioc_querycap (struct file *file, void *priv, 731static int vidioc_querycap (struct file *file, void *priv,
@@ -913,9 +878,7 @@ static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
913 if (i != fh->type) 878 if (i != fh->type)
914 return -EINVAL; 879 return -EINVAL;
915 880
916 if (!res_get(dev,fh)) 881 return videobuf_streamon(&fh->vb_vidq);
917 return -EBUSY;
918 return (videobuf_streamon(&fh->vb_vidq));
919} 882}
920 883
921static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i) 884static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
@@ -928,10 +891,7 @@ static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
928 if (i != fh->type) 891 if (i != fh->type)
929 return -EINVAL; 892 return -EINVAL;
930 893
931 videobuf_streamoff(&fh->vb_vidq); 894 return videobuf_streamoff(&fh->vb_vidq);
932 res_free(dev,fh);
933
934 return (0);
935} 895}
936 896
937static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *i) 897static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *i)
@@ -1096,10 +1056,10 @@ static ssize_t
1096vivi_read(struct file *file, char __user *data, size_t count, loff_t *ppos) 1056vivi_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
1097{ 1057{
1098 struct vivi_fh *fh = file->private_data; 1058 struct vivi_fh *fh = file->private_data;
1059 struct vivi_dev *dev = fh->dev;
1060 struct videobuf_queue *q = &fh->vb_vidq;
1099 1061
1100 if (fh->type==V4L2_BUF_TYPE_VIDEO_CAPTURE) { 1062 if (fh->type==V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1101 if (res_locked(fh->dev))
1102 return -EBUSY;
1103 return videobuf_read_stream(&fh->vb_vidq, data, count, ppos, 0, 1063 return videobuf_read_stream(&fh->vb_vidq, data, count, ppos, 0,
1104 file->f_flags & O_NONBLOCK); 1064 file->f_flags & O_NONBLOCK);
1105 } 1065 }