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[media] v4l2: make vidioc_s_jpegcomp const

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Write-only ioctls should have a const argument in the ioctl op.
Do this conversion for vidioc_s_jpegcomp.
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>
This commit is contained in:
Hans Verkuil 2012-09-17 05:05:25 -03:00 committed by Mauro Carvalho Chehab
parent e6eb28c220
commit d88aab53bd
11 changed files with 18 additions and 22 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
drivers/media/pci/zoran/zoran_driver.c
View file

@ -2674,7 +2674,7 @@ static int zoran_g_jpegcomp(struct file *file, void *__fh,
}
static int zoran_s_jpegcomp(struct file *file, void *__fh,
struct v4l2_jpegcompression *params)
const struct v4l2_jpegcompression *params)
{
struct zoran_fh *fh = __fh;
struct zoran *zr = fh->zr;
@ -2701,7 +2701,7 @@ static int zoran_s_jpegcomp(struct file *file, void *__fh,
if (!fh->buffers.allocated)
fh->buffers.buffer_size =
zoran_v4l2_calc_bufsize(&fh->jpg_settings);
fh->jpg_settings.jpg_comp = *params = settings.jpg_comp;
fh->jpg_settings.jpg_comp = settings.jpg_comp;
sjpegc_unlock_and_return:
mutex_unlock(&zr->resource_lock);

5
drivers/media/usb/cpia2/cpia2_v4l.c
View file

@ -734,7 +734,8 @@ static int cpia2_g_jpegcomp(struct file *file, void *fh, struct v4l2_jpegcompres
*
*****************************************************************************/
static int cpia2_s_jpegcomp(struct file *file, void *fh, struct v4l2_jpegcompression *parms)
static int cpia2_s_jpegcomp(struct file *file, void *fh,
const struct v4l2_jpegcompression *parms)
{
struct camera_data *cam = video_drvdata(file);
@ -743,8 +744,6 @@ static int cpia2_s_jpegcomp(struct file *file, void *fh, struct v4l2_jpegcompres
cam->params.compression.inhibit_htables =
!(parms->jpeg_markers & V4L2_JPEG_MARKER_DHT);
parms->jpeg_markers &= V4L2_JPEG_MARKER_DQT | V4L2_JPEG_MARKER_DRI |
V4L2_JPEG_MARKER_DHT;
if(parms->APP_len != 0) {
if(parms->APP_len > 0 &&

2
drivers/media/usb/gspca/gspca.c
View file

@ -1686,7 +1686,7 @@ static int vidioc_g_jpegcomp(struct file *file, void *priv,
}
static int vidioc_s_jpegcomp(struct file *file, void *priv,
struct v4l2_jpegcompression *jpegcomp)
const struct v4l2_jpegcompression *jpegcomp)
{
struct gspca_dev *gspca_dev = video_drvdata(file);

8
drivers/media/usb/gspca/gspca.h
View file

@ -83,8 +83,10 @@ struct gspca_frame;
typedef int (*cam_op) (struct gspca_dev *);
typedef void (*cam_v_op) (struct gspca_dev *);
typedef int (*cam_cf_op) (struct gspca_dev *, const struct usb_device_id *);
typedef int (*cam_jpg_op) (struct gspca_dev *,
typedef int (*cam_get_jpg_op) (struct gspca_dev *,
struct v4l2_jpegcompression *);
typedef int (*cam_set_jpg_op) (struct gspca_dev *,
const struct v4l2_jpegcompression *);
typedef int (*cam_reg_op) (struct gspca_dev *,
struct v4l2_dbg_register *);
typedef int (*cam_ident_op) (struct gspca_dev *,
@ -126,8 +128,8 @@ struct sd_desc {
cam_v_op stopN; /* called on stream off - main alt */
cam_v_op stop0; /* called on stream off & disconnect - alt 0 */
cam_v_op dq_callback; /* called when a frame has been dequeued */
cam_jpg_op get_jcomp;
cam_jpg_op set_jcomp;
cam_get_jpg_op get_jcomp;
cam_set_jpg_op set_jcomp;
cam_qmnu_op querymenu;
cam_streamparm_op get_streamparm;
cam_streamparm_op set_streamparm;

2
drivers/media/usb/gspca/jeilinj.c
View file

@ -474,7 +474,7 @@ static int sd_init_controls(struct gspca_dev *gspca_dev)
}
static int sd_set_jcomp(struct gspca_dev *gspca_dev,
struct v4l2_jpegcompression *jcomp)
const struct v4l2_jpegcompression *jcomp)
{
struct sd *sd = (struct sd *) gspca_dev;

2
drivers/media/usb/gspca/ov519.c
View file

@ -4762,7 +4762,7 @@ static int sd_get_jcomp(struct gspca_dev *gspca_dev,
}
static int sd_set_jcomp(struct gspca_dev *gspca_dev,
struct v4l2_jpegcompression *jcomp)
const struct v4l2_jpegcompression *jcomp)
{
struct sd *sd = (struct sd *) gspca_dev;

2
drivers/media/usb/gspca/topro.c
View file

@ -4806,7 +4806,7 @@ static void sd_set_streamparm(struct gspca_dev *gspca_dev,
}
static int sd_set_jcomp(struct gspca_dev *gspca_dev,
struct v4l2_jpegcompression *jcomp)
const struct v4l2_jpegcompression *jcomp)
{
struct sd *sd = (struct sd *) gspca_dev;

9
drivers/media/usb/gspca/zc3xx.c
View file

@ -6883,16 +6883,11 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
}
static int sd_set_jcomp(struct gspca_dev *gspca_dev,
struct v4l2_jpegcompression *jcomp)
const struct v4l2_jpegcompression *jcomp)
{
struct sd *sd = (struct sd *) gspca_dev;
int ret;
ret = v4l2_ctrl_s_ctrl(sd->jpegqual, jcomp->quality);
if (ret)
return ret;
jcomp->quality = v4l2_ctrl_g_ctrl(sd->jpegqual);
return 0;
return v4l2_ctrl_s_ctrl(sd->jpegqual, jcomp->quality);
}
static int sd_get_jcomp(struct gspca_dev *gspca_dev,

2
drivers/media/usb/s2255/s2255drv.c
View file

@ -1556,7 +1556,7 @@ static int vidioc_g_jpegcomp(struct file *file, void *priv,
}
static int vidioc_s_jpegcomp(struct file *file, void *priv,
struct v4l2_jpegcompression *jc)
const struct v4l2_jpegcompression *jc)
{
struct s2255_fh *fh = priv;
struct s2255_channel *channel = fh->channel;

2
drivers/staging/media/go7007/go7007-v4l2.c
View file

@ -1392,7 +1392,7 @@ static int vidioc_g_jpegcomp(struct file *file, void *priv,
}
static int vidioc_s_jpegcomp(struct file *file, void *priv,
struct v4l2_jpegcompression *params)
const struct v4l2_jpegcompression *params)
{
if (params->quality != 50 ||
params->jpeg_markers != (V4L2_JPEG_MARKER_DHT |

2
include/media/v4l2-ioctl.h
View file

@ -195,7 +195,7 @@ struct v4l2_ioctl_ops {
int (*vidioc_g_jpegcomp) (struct file *file, void *fh,
struct v4l2_jpegcompression *a);
int (*vidioc_s_jpegcomp) (struct file *file, void *fh,
struct v4l2_jpegcompression *a);
const struct v4l2_jpegcompression *a);
int (*vidioc_g_enc_index) (struct file *file, void *fh,
struct v4l2_enc_idx *a);
int (*vidioc_encoder_cmd) (struct file *file, void *fh,