[media] fsl-viu: replace .ioctl by .unlocked_ioctl

Use the core-assisted locking in fsl-viu driver and switch
to .unlocked_ioctl.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 13 insertions, 7 deletions

diff --git a/drivers/media/video/fsl-viu.c b/drivers/media/video/fsl-viu.c
index 031af1610154..575f39b3c677 100644
--- a/drivers/media/video/fsl-viu.c
+++ b/drivers/media/video/fsl-viu.c
@@ -825,13 +825,11 @@ static int vidioc_s_fmt_overlay(struct file *file, void *priv,
         if (err)
                 return err;
 
-        mutex_lock(&dev->lock);
         fh->win = f->fmt.win;
 
         spin_lock_irqsave(&dev->slock, flags);
         viu_start_preview(dev, fh);
         spin_unlock_irqrestore(&dev->slock, flags);
-        mutex_unlock(&dev->lock);
         return 0;
 }
 
@@ -1311,7 +1309,8 @@ static int viu_open(struct file *file)
         videobuf_queue_dma_contig_init(&fh->vb_vidq, &viu_video_qops,
                                        dev->dev, &fh->vbq_lock,
                                        fh->type, V4L2_FIELD_INTERLACED,
-                                       sizeof(struct viu_buf), fh, NULL);
+                                       sizeof(struct viu_buf), fh,
+                                       &fh->dev->lock);
         return 0;
 }
 
@@ -1401,7 +1400,7 @@ static struct v4l2_file_operations viu_fops = {
         .release        = viu_release,
         .read           = viu_read,
         .poll           = viu_poll,
-        .ioctl          = video_ioctl2, /* V4L2 ioctl handler */
+        .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */
         .mmap           = viu_mmap,
 };
 
@@ -1498,9 +1497,6 @@ static int __devinit viu_of_probe(struct platform_device *op)
         INIT_LIST_HEAD(&viu_dev->vidq.active);
         INIT_LIST_HEAD(&viu_dev->vidq.queued);
 
-        /* initialize locks */
-        mutex_init(&viu_dev->lock);
-
         snprintf(viu_dev->v4l2_dev.name,
                  sizeof(viu_dev->v4l2_dev.name), "%s", "VIU");
         ret = v4l2_device_register(viu_dev->dev, &viu_dev->v4l2_dev);
@@ -1531,8 +1527,15 @@ static int __devinit viu_of_probe(struct platform_device *op)
 
         viu_dev->vdev = vdev;
 
+        /* initialize locks */
+        mutex_init(&viu_dev->lock);
+        viu_dev->vdev->lock = &viu_dev->lock;
+        spin_lock_init(&viu_dev->slock);
+
         video_set_drvdata(viu_dev->vdev, viu_dev);
 
+        mutex_lock(&viu_dev->lock);
+
         ret = video_register_device(viu_dev->vdev, VFL_TYPE_GRABBER, -1);
         if (ret < 0) {
                 video_device_release(viu_dev->vdev);
@@ -1559,6 +1562,8 @@ static int __devinit viu_of_probe(struct platform_device *op)
                 goto err_irq;
         }
 
+        mutex_unlock(&viu_dev->lock);
+
         dev_info(&op->dev, "Freescale VIU Video Capture Board\n");
         return ret;
 
@@ -1568,6 +1573,7 @@ err_irq:
 err_clk:
         video_unregister_device(viu_dev->vdev);
 err_vdev:
+        mutex_unlock(&viu_dev->lock);
         i2c_put_adapter(ad);
         v4l2_device_unregister(&viu_dev->v4l2_dev);
 err: