[media] v4l2: make vidioc_s_audio const

Write-only ioctls should have a const argument in the ioctl op.
Do this conversion for vidioc_s_audio.
Adding const for write-only ioctls was decided during the 2012 Media Workshop.

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

23 files changed, 27 insertions, 27 deletions

diff --git a/drivers/media/pci/bt8xx/bttv-driver.c b/drivers/media/pci/bt8xx/bttv-driver.c
index 26bf309c41c2..31b282667463 100644
--- a/drivers/media/pci/bt8xx/bttv-driver.c
+++ b/drivers/media/pci/bt8xx/bttv-driver.c
@@ -3076,7 +3076,7 @@ static int bttv_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
         return 0;
 }
 
-static int bttv_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
+static int bttv_s_audio(struct file *file, void *priv, const struct v4l2_audio *a)
 {
         if (unlikely(a->index))
                 return -EINVAL;
@@ -3480,7 +3480,7 @@ static int radio_s_tuner(struct file *file, void *priv,
 }
 
 static int radio_s_audio(struct file *file, void *priv,
-                                        struct v4l2_audio *a)
+                                        const struct v4l2_audio *a)
 {
         if (unlikely(a->index))
                 return -EINVAL;
diff --git a/drivers/media/pci/cx18/cx18-ioctl.c b/drivers/media/pci/cx18/cx18-ioctl.c
index e9912db3b496..ff315446d4ad 100644
--- a/drivers/media/pci/cx18/cx18-ioctl.c
+++ b/drivers/media/pci/cx18/cx18-ioctl.c
@@ -492,7 +492,7 @@ static int cx18_g_audio(struct file *file, void *fh, struct v4l2_audio *vin)
         return cx18_get_audio_input(cx, vin->index, vin);
 }
 
-static int cx18_s_audio(struct file *file, void *fh, struct v4l2_audio *vout)
+static int cx18_s_audio(struct file *file, void *fh, const struct v4l2_audio *vout)
 {
         struct cx18 *cx = fh2id(fh)->cx;
 
diff --git a/drivers/media/pci/cx23885/cx23885-video.c b/drivers/media/pci/cx23885/cx23885-video.c
index 22f8e7fbd665..8c4a9a5f9a50 100644
--- a/drivers/media/pci/cx23885/cx23885-video.c
+++ b/drivers/media/pci/cx23885/cx23885-video.c
@@ -1426,7 +1426,7 @@ static int vidioc_g_audinput(struct file *file, void *priv,
 }
 
 static int vidioc_s_audinput(struct file *file, void *priv,
-        struct v4l2_audio *i)
+        const struct v4l2_audio *i)
 {
         struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
         if (i->index >= 2)
diff --git a/drivers/media/pci/ivtv/ivtv-ioctl.c b/drivers/media/pci/ivtv/ivtv-ioctl.c
index 966abb407304..99e35dd3d83e 100644
--- a/drivers/media/pci/ivtv/ivtv-ioctl.c
+++ b/drivers/media/pci/ivtv/ivtv-ioctl.c
@@ -784,7 +784,7 @@ static int ivtv_g_audio(struct file *file, void *fh, struct v4l2_audio *vin)
         return ivtv_get_audio_input(itv, vin->index, vin);
 }
 
-static int ivtv_s_audio(struct file *file, void *fh, struct v4l2_audio *vout)
+static int ivtv_s_audio(struct file *file, void *fh, const struct v4l2_audio *vout)
 {
         struct ivtv *itv = fh2id(fh)->itv;
 
diff --git a/drivers/media/pci/saa7134/saa7134-video.c b/drivers/media/pci/saa7134/saa7134-video.c
index bac4386c64b9..135bfd8c28ad 100644
--- a/drivers/media/pci/saa7134/saa7134-video.c
+++ b/drivers/media/pci/saa7134/saa7134-video.c
@@ -2089,7 +2089,7 @@ static int saa7134_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
         return 0;
 }
 
-static int saa7134_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
+static int saa7134_s_audio(struct file *file, void *priv, const struct v4l2_audio *a)
 {
         return 0;
 }
@@ -2373,7 +2373,7 @@ static int radio_g_audio(struct file *file, void *priv,
 }
 
 static int radio_s_audio(struct file *file, void *priv,
-                                        struct v4l2_audio *a)
+                                        const struct v4l2_audio *a)
 {
         return 0;
 }
diff --git a/drivers/media/pci/saa7146/mxb.c b/drivers/media/pci/saa7146/mxb.c
index b520a45cb3f3..91369daad722 100644
--- a/drivers/media/pci/saa7146/mxb.c
+++ b/drivers/media/pci/saa7146/mxb.c
@@ -646,7 +646,7 @@ static int vidioc_g_audio(struct file *file, void *fh, struct v4l2_audio *a)
         return 0;
 }
 
-static int vidioc_s_audio(struct file *file, void *fh, struct v4l2_audio *a)
+static int vidioc_s_audio(struct file *file, void *fh, const struct v4l2_audio *a)
 {
         struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
         struct mxb *mxb = (struct mxb *)dev->ext_priv;
diff --git a/drivers/media/pci/ttpci/av7110_v4l.c b/drivers/media/pci/ttpci/av7110_v4l.c
index 1b2d15140a1d..730e906ea912 100644
--- a/drivers/media/pci/ttpci/av7110_v4l.c
+++ b/drivers/media/pci/ttpci/av7110_v4l.c
@@ -526,7 +526,7 @@ static int vidioc_g_audio(struct file *file, void *fh, struct v4l2_audio *a)
         return 0;
 }
 
-static int vidioc_s_audio(struct file *file, void *fh, struct v4l2_audio *a)
+static int vidioc_s_audio(struct file *file, void *fh, const struct v4l2_audio *a)
 {
         struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
         struct av7110 *av7110 = (struct av7110 *)dev->ext_priv;
diff --git a/drivers/media/radio/radio-miropcm20.c b/drivers/media/radio/radio-miropcm20.c
index 87c1ee13b058..11f76ed4c6fb 100644
--- a/drivers/media/radio/radio-miropcm20.c
+++ b/drivers/media/radio/radio-miropcm20.c
@@ -197,7 +197,7 @@ static int vidioc_g_audio(struct file *file, void *priv,
 }
 
 static int vidioc_s_audio(struct file *file, void *priv,
-                                struct v4l2_audio *a)
+                                const struct v4l2_audio *a)
 {
         return a->index ? -EINVAL : 0;
 }
diff --git a/drivers/media/radio/radio-sf16fmi.c b/drivers/media/radio/radio-sf16fmi.c
index 8185d5fbfa89..227dcdb54df3 100644
--- a/drivers/media/radio/radio-sf16fmi.c
+++ b/drivers/media/radio/radio-sf16fmi.c
@@ -239,7 +239,7 @@ static int vidioc_g_audio(struct file *file, void *priv,
 }
 
 static int vidioc_s_audio(struct file *file, void *priv,
-                                        struct v4l2_audio *a)
+                                        const struct v4l2_audio *a)
 {
         return a->index ? -EINVAL : 0;
 }
diff --git a/drivers/media/radio/radio-tea5764.c b/drivers/media/radio/radio-tea5764.c
index 6b1fae32b483..efb05aa81d08 100644
--- a/drivers/media/radio/radio-tea5764.c
+++ b/drivers/media/radio/radio-tea5764.c
@@ -448,7 +448,7 @@ static int vidioc_g_audio(struct file *file, void *priv,
 }
 
 static int vidioc_s_audio(struct file *file, void *priv,
-                           struct v4l2_audio *a)
+                           const struct v4l2_audio *a)
 {
         if (a->index != 0)
                 return -EINVAL;
diff --git a/drivers/media/radio/radio-timb.c b/drivers/media/radio/radio-timb.c
index 09fc56052d35..5cf07779f4bb 100644
--- a/drivers/media/radio/radio-timb.c
+++ b/drivers/media/radio/radio-timb.c
@@ -85,7 +85,7 @@ static int timbradio_vidioc_g_audio(struct file *file, void *priv,
 }
 
 static int timbradio_vidioc_s_audio(struct file *file, void *priv,
-        struct v4l2_audio *a)
+        const struct v4l2_audio *a)
 {
         return a->index ? -EINVAL : 0;
 }
diff --git a/drivers/media/radio/radio-wl1273.c b/drivers/media/radio/radio-wl1273.c
index 71968a610734..2d93354fdcec 100644
--- a/drivers/media/radio/radio-wl1273.c
+++ b/drivers/media/radio/radio-wl1273.c
@@ -1479,7 +1479,7 @@ static int wl1273_fm_vidioc_g_audio(struct file *file, void *priv,
 }
 
 static int wl1273_fm_vidioc_s_audio(struct file *file, void *priv,
-                                    struct v4l2_audio *audio)
+                                    const struct v4l2_audio *audio)
 {
         struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
 
diff --git a/drivers/media/radio/wl128x/fmdrv_v4l2.c b/drivers/media/radio/wl128x/fmdrv_v4l2.c
index f816ea68e469..09585a99f02c 100644
--- a/drivers/media/radio/wl128x/fmdrv_v4l2.c
+++ b/drivers/media/radio/wl128x/fmdrv_v4l2.c
@@ -258,7 +258,7 @@ static int fm_v4l2_vidioc_g_audio(struct file *file, void *priv,
 }
 
 static int fm_v4l2_vidioc_s_audio(struct file *file, void *priv,
-                struct v4l2_audio *audio)
+                const struct v4l2_audio *audio)
 {
         if (audio->index != 0)
                 return -EINVAL;
diff --git a/drivers/media/usb/au0828/au0828-video.c b/drivers/media/usb/au0828/au0828-video.c
index fa0fa9ae91c7..870585570571 100644
--- a/drivers/media/usb/au0828/au0828-video.c
+++ b/drivers/media/usb/au0828/au0828-video.c
@@ -1465,7 +1465,7 @@ static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
         return 0;
 }
 
-static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
+static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *a)
 {
         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 790b28d7f764..fedf7852a355 100644
--- a/drivers/media/usb/cx231xx/cx231xx-video.c
+++ b/drivers/media/usb/cx231xx/cx231xx-video.c
@@ -1253,7 +1253,7 @@ static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
         return 0;
 }
 
-static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
+static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *a)
 {
         struct cx231xx_fh *fh = priv;
         struct cx231xx *dev = fh->dev;
@@ -2096,7 +2096,7 @@ static int radio_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
         return 0;
 }
 
-static int radio_s_audio(struct file *file, void *fh, struct v4l2_audio *a)
+static int radio_s_audio(struct file *file, void *fh, const struct v4l2_audio *a)
 {
         return 0;
 }
diff --git a/drivers/media/usb/em28xx/em28xx-video.c b/drivers/media/usb/em28xx/em28xx-video.c
index 78d6ebd712b9..1e553d357380 100644
--- a/drivers/media/usb/em28xx/em28xx-video.c
+++ b/drivers/media/usb/em28xx/em28xx-video.c
@@ -1352,7 +1352,7 @@ static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
         return 0;
 }
 
-static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
+static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *a)
 {
         struct em28xx_fh   *fh  = priv;
         struct em28xx      *dev = fh->dev;
@@ -2087,7 +2087,7 @@ static int radio_s_tuner(struct file *file, void *priv,
 }
 
 static int radio_s_audio(struct file *file, void *fh,
-                         struct v4l2_audio *a)
+                         const struct v4l2_audio *a)
 {
         return 0;
 }
diff --git a/drivers/media/usb/hdpvr/hdpvr-video.c b/drivers/media/usb/hdpvr/hdpvr-video.c
index 0e9e156bb2aa..da6b77912222 100644
--- a/drivers/media/usb/hdpvr/hdpvr-video.c
+++ b/drivers/media/usb/hdpvr/hdpvr-video.c
@@ -677,7 +677,7 @@ static int vidioc_enumaudio(struct file *file, void *priv,
 }
 
 static int vidioc_s_audio(struct file *file, void *private_data,
-                          struct v4l2_audio *audio)
+                          const struct v4l2_audio *audio)
 {
         struct hdpvr_fh *fh = file->private_data;
         struct hdpvr_device *dev = fh->dev;
diff --git a/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c b/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c
index f344aed32a93..7a445b0e725e 100644
--- a/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c
+++ b/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c
@@ -333,7 +333,7 @@ static int pvr2_g_audio(struct file *file, void *priv, struct v4l2_audio *vin)
         return 0;
 }
 
-static int pvr2_s_audio(struct file *file, void *priv, struct v4l2_audio *vout)
+static int pvr2_s_audio(struct file *file, void *priv, const struct v4l2_audio *vout)
 {
         if (vout->index)
                 return -EINVAL;
diff --git a/drivers/media/usb/tlg2300/pd-radio.c b/drivers/media/usb/tlg2300/pd-radio.c
index 4fad1dfb92cf..25eeb166aa0b 100644
--- a/drivers/media/usb/tlg2300/pd-radio.c
+++ b/drivers/media/usb/tlg2300/pd-radio.c
@@ -348,7 +348,7 @@ static int vidioc_s_tuner(struct file *file, void *priv, struct v4l2_tuner *vt)
 {
         return vt->index > 0 ? -EINVAL : 0;
 }
-static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *va)
+static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *va)
 {
         return (va->index != 0) ? -EINVAL : 0;
 }
diff --git a/drivers/media/usb/tlg2300/pd-video.c b/drivers/media/usb/tlg2300/pd-video.c
index bfbf9e56b0a4..1f448ac7a496 100644
--- a/drivers/media/usb/tlg2300/pd-video.c
+++ b/drivers/media/usb/tlg2300/pd-video.c
@@ -1029,7 +1029,7 @@ static int vidioc_g_audio(struct file *file, void *fh, struct v4l2_audio *a)
         return 0;
 }
 
-static int vidioc_s_audio(struct file *file, void *fh, struct v4l2_audio *a)
+static int vidioc_s_audio(struct file *file, void *fh, const struct v4l2_audio *a)
 {
         return (0 == a->index) ? 0 : -EINVAL;
 }
diff --git a/drivers/media/usb/tm6000/tm6000-video.c b/drivers/media/usb/tm6000/tm6000-video.c
index 45ed59cb2d04..4342cd4f5c8a 100644
--- a/drivers/media/usb/tm6000/tm6000-video.c
+++ b/drivers/media/usb/tm6000/tm6000-video.c
@@ -1401,7 +1401,7 @@ static int radio_g_audio(struct file *file, void *priv,
 }
 
 static int radio_s_audio(struct file *file, void *priv,
-                                        struct v4l2_audio *a)
+                                        const struct v4l2_audio *a)
 {
         return 0;
 }
diff --git a/drivers/media/usb/usbvision/usbvision-video.c b/drivers/media/usb/usbvision/usbvision-video.c
index 8a4317979a43..f67018ed3795 100644
--- a/drivers/media/usb/usbvision/usbvision-video.c
+++ b/drivers/media/usb/usbvision/usbvision-video.c
@@ -684,7 +684,7 @@ static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
 }
 
 static int vidioc_s_audio(struct file *file, void *fh,
-                          struct v4l2_audio *a)
+                          const struct v4l2_audio *a)
 {
         if (a->index)
                 return -EINVAL;
diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
index 3eef4de0ca33..babbe09527cd 100644
--- a/include/media/v4l2-ioctl.h
+++ b/include/media/v4l2-ioctl.h
@@ -167,7 +167,7 @@ struct v4l2_ioctl_ops {
         int (*vidioc_g_audio)          (struct file *file, void *fh,
                                         struct v4l2_audio *a);
         int (*vidioc_s_audio)          (struct file *file, void *fh,
-                                        struct v4l2_audio *a);
+                                        const struct v4l2_audio *a);
 
         /* Audio out ioctls */
         int (*vidioc_enumaudout)       (struct file *file, void *fh,