[media] v4l2: add const to argument of write-only s_frequency ioctl

This ioctl is defined as IOW, so pass the argument as const.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

9 files changed, 17 insertions, 14 deletions

diff --git a/drivers/media/usb/au0828/au0828-video.c b/drivers/media/usb/au0828/au0828-video.c
index 8b9e826..b1d6b03 100644
--- a/drivers/media/usb/au0828/au0828-video.c
+++ b/drivers/media/usb/au0828/au0828-video.c
@@ -1545,7 +1545,7 @@ static int vidioc_g_frequency(struct file *file, void *priv,
 }
 
 static int vidioc_s_frequency(struct file *file, void *priv,
-				struct v4l2_frequency *freq)
+				const struct v4l2_frequency *freq)
 {
 	struct au0828_fh *fh = priv;
 	struct au0828_dev *dev = fh->dev;
diff --git a/drivers/media/usb/cx231xx/cx231xx-video.c b/drivers/media/usb/cx231xx/cx231xx-video.c
index ac62008..96f6531 100644
--- a/drivers/media/usb/cx231xx/cx231xx-video.c
+++ b/drivers/media/usb/cx231xx/cx231xx-video.c
@@ -1172,10 +1172,11 @@ int cx231xx_g_frequency(struct file *file, void *priv,
 }
 
 int cx231xx_s_frequency(struct file *file, void *priv,
-			      struct v4l2_frequency *f)
+			      const struct v4l2_frequency *f)
 {
 	struct cx231xx_fh *fh = priv;
 	struct cx231xx *dev = fh->dev;
+	struct v4l2_frequency new_freq = *f;
 	int rc;
 	u32 if_frequency = 5400000;
 
@@ -1194,8 +1195,8 @@ int cx231xx_s_frequency(struct file *file, void *priv,
 	rc = cx231xx_tuner_pre_channel_change(dev);
 
 	call_all(dev, tuner, s_frequency, f);
-	call_all(dev, tuner, g_frequency, f);
-	dev->ctl_freq = f->frequency;
+	call_all(dev, tuner, g_frequency, &new_freq);
+	dev->ctl_freq = new_freq.frequency;
 
 	/* set post channel change settings in DIF first */
 	rc = cx231xx_tuner_post_channel_change(dev);
diff --git a/drivers/media/usb/cx231xx/cx231xx.h b/drivers/media/usb/cx231xx/cx231xx.h
index dff3f1d..6f701e9 100644
--- a/drivers/media/usb/cx231xx/cx231xx.h
+++ b/drivers/media/usb/cx231xx/cx231xx.h
@@ -940,7 +940,7 @@ int cx231xx_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t);
 int cx231xx_g_frequency(struct file *file, void *priv,
 			      struct v4l2_frequency *f);
 int cx231xx_s_frequency(struct file *file, void *priv,
-			      struct v4l2_frequency *f);
+			      const struct v4l2_frequency *f);
 int cx231xx_enum_input(struct file *file, void *priv,
 			     struct v4l2_input *i);
 int cx231xx_g_input(struct file *file, void *priv, unsigned int *i);
diff --git a/drivers/media/usb/em28xx/em28xx-video.c b/drivers/media/usb/em28xx/em28xx-video.c
index d585c19..af79089 100644
--- a/drivers/media/usb/em28xx/em28xx-video.c
+++ b/drivers/media/usb/em28xx/em28xx-video.c
@@ -1221,8 +1221,9 @@ static int vidioc_g_frequency(struct file *file, void *priv,
 }
 
 static int vidioc_s_frequency(struct file *file, void *priv,
-				struct v4l2_frequency *f)
+				const struct v4l2_frequency *f)
 {
+	struct v4l2_frequency new_freq = *f;
 	struct em28xx_fh      *fh  = priv;
 	struct em28xx         *dev = fh->dev;
 
@@ -1230,8 +1231,8 @@ static int vidioc_s_frequency(struct file *file, void *priv,
 		return -EINVAL;
 
 	v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
-	v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, f);
-	dev->ctl_freq = f->frequency;
+	v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, &new_freq);
+	dev->ctl_freq = new_freq.frequency;
 
 	return 0;
 }
diff --git a/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c b/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c
index 34c3b6e..75657c6 100644
--- a/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c
+++ b/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c
@@ -365,7 +365,7 @@ static int pvr2_s_tuner(struct file *file, void *priv, struct v4l2_tuner *vt)
 			vt->audmode);
 }
 
-static int pvr2_s_frequency(struct file *file, void *priv, struct v4l2_frequency *vf)
+static int pvr2_s_frequency(struct file *file, void *priv, const struct v4l2_frequency *vf)
 {
 	struct pvr2_v4l2_fh *fh = file->private_data;
 	struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
diff --git a/drivers/media/usb/tlg2300/pd-radio.c b/drivers/media/usb/tlg2300/pd-radio.c
index 0f958f7..8b1daf1 100644
--- a/drivers/media/usb/tlg2300/pd-radio.c
+++ b/drivers/media/usb/tlg2300/pd-radio.c
@@ -252,7 +252,7 @@ error:
 }
 
 static int fm_set_freq(struct file *file, void *priv,
-		       struct v4l2_frequency *argp)
+		       const struct v4l2_frequency *argp)
 {
 	struct poseidon *p = video_drvdata(file);
 
diff --git a/drivers/media/usb/tlg2300/pd-video.c b/drivers/media/usb/tlg2300/pd-video.c
index dab0ca3..8ef7c8c 100644
--- a/drivers/media/usb/tlg2300/pd-video.c
+++ b/drivers/media/usb/tlg2300/pd-video.c
@@ -1079,10 +1079,11 @@ static int set_frequency(struct poseidon *pd, u32 *frequency)
 }
 
 static int vidioc_s_frequency(struct file *file, void *fh,
-				struct v4l2_frequency *freq)
+				const struct v4l2_frequency *freq)
 {
 	struct front_face *front = fh;
 	struct poseidon *pd = front->pd;
+	u32 frequency = freq->frequency;
 
 	if (freq->tuner)
 		return -EINVAL;
@@ -1090,7 +1091,7 @@ static int vidioc_s_frequency(struct file *file, void *fh,
 	pd->pm_suspend = pm_video_suspend;
 	pd->pm_resume = pm_video_resume;
 #endif
-	return set_frequency(pd, &freq->frequency);
+	return set_frequency(pd, &frequency);
 }
 
 static int vidioc_reqbufs(struct file *file, void *fh,
diff --git a/drivers/media/usb/tm6000/tm6000-video.c b/drivers/media/usb/tm6000/tm6000-video.c
index 1a68579..49df753 100644
--- a/drivers/media/usb/tm6000/tm6000-video.c
+++ b/drivers/media/usb/tm6000/tm6000-video.c
@@ -1255,7 +1255,7 @@ static int vidioc_g_frequency(struct file *file, void *priv,
 }
 
 static int vidioc_s_frequency(struct file *file, void *priv,
-				struct v4l2_frequency *f)
+				const struct v4l2_frequency *f)
 {
 	struct tm6000_fh   *fh  = priv;
 	struct tm6000_core *dev = fh->dev;
diff --git a/drivers/media/usb/usbvision/usbvision-video.c b/drivers/media/usb/usbvision/usbvision-video.c
index cd1fe78..b668445 100644
--- a/drivers/media/usb/usbvision/usbvision-video.c
+++ b/drivers/media/usb/usbvision/usbvision-video.c
@@ -657,7 +657,7 @@ static int vidioc_g_frequency(struct file *file, void *priv,
 }
 
 static int vidioc_s_frequency(struct file *file, void *priv,
-				struct v4l2_frequency *freq)
+				const struct v4l2_frequency *freq)
 {
 	struct usb_usbvision *usbvision = video_drvdata(file);