V4L/DVB (8788): v4l: replace video_get_drvdata(video_devdata(filp)) with video_drvdata(filp)

Use the new video_drvdata(filp) function where it is safe to do so.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/radio/radio-zoltrix.c b/drivers/media/radio/radio-zoltrix.c
index 3a9a777..f75da63 100644
--- a/drivers/media/radio/radio-zoltrix.c
+++ b/drivers/media/radio/radio-zoltrix.c
@@ -246,8 +246,7 @@
 static int vidioc_g_tuner(struct file *file, void *priv,
 					struct v4l2_tuner *v)
 {
-	struct video_device *dev = video_devdata(file);
-	struct zol_device *zol = video_get_drvdata(dev);
+	struct zol_device *zol = video_drvdata(file);
 
 	if (v->index > 0)
 		return -EINVAL;
@@ -277,8 +276,7 @@
 static int vidioc_s_frequency(struct file *file, void *priv,
 					struct v4l2_frequency *f)
 {
-	struct video_device *dev = video_devdata(file);
-	struct zol_device *zol = video_get_drvdata(dev);
+	struct zol_device *zol = video_drvdata(file);
 
 	zol->curfreq = f->frequency;
 	zol_setfreq(zol, zol->curfreq);
@@ -288,8 +286,7 @@
 static int vidioc_g_frequency(struct file *file, void *priv,
 					struct v4l2_frequency *f)
 {
-	struct video_device *dev = video_devdata(file);
-	struct zol_device *zol = video_get_drvdata(dev);
+	struct zol_device *zol = video_drvdata(file);
 
 	f->type = V4L2_TUNER_RADIO;
 	f->frequency = zol->curfreq;
@@ -314,8 +311,7 @@
 static int vidioc_g_ctrl(struct file *file, void *priv,
 				struct v4l2_control *ctrl)
 {
-	struct video_device *dev = video_devdata(file);
-	struct zol_device *zol = video_get_drvdata(dev);
+	struct zol_device *zol = video_drvdata(file);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE:
@@ -331,8 +327,7 @@
 static int vidioc_s_ctrl(struct file *file, void *priv,
 				struct v4l2_control *ctrl)
 {
-	struct video_device *dev = video_devdata(file);
-	struct zol_device *zol = video_get_drvdata(dev);
+	struct zol_device *zol = video_drvdata(file);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE: