redonkable/alistair23-linux
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V4L/DVB (10820): meye: Don't need to zero ioctl parameter fields

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The v4l2 core code in v4l2_ioctl will zero out the structure the driver is
supposed to fill in for read-only ioctls.  For read/write ioctls, all the
fields which aren't supplied from userspace will be zeroed out.

Zeroing code is removed from querycap, enum_input, enum_fmt_vid_cap, and
g_fmt_vid_cap.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Trent Piepho 2009-03-04 01:21:03 -03:00 committed by Mauro Carvalho Chehab
parent c6a976e44e
commit 1a1500179a
1 changed files with 0 additions and 12 deletions
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12
drivers/media/video/meye.c
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@ -1017,7 +1017,6 @@ static int meyeioc_stilljcapt(int *len)
static int vidioc_querycap(struct file *file, void *fh,
struct v4l2_capability *cap)
{
memset(cap, 0, sizeof(*cap));
strcpy(cap->driver, "meye");
strcpy(cap->card, "meye");
sprintf(cap->bus_info, "PCI:%s", pci_name(meye.mchip_dev));
@ -1036,8 +1035,6 @@ static int vidioc_enum_input(struct file *file, void *fh, struct v4l2_input *i)
if (i->index != 0)
return -EINVAL;
memset(i, 0, sizeof(*i));
i->index = 0;
strcpy(i->name, "Camera");
i->type = V4L2_INPUT_TYPE_CAMERA;
@ -1264,16 +1261,12 @@ static int vidioc_enum_fmt_vid_cap(struct file *file, void *fh,
if (f->index == 0) {
/* standard YUV 422 capture */
memset(f, 0, sizeof(*f));
f->index = 0;
f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
f->flags = 0;
strcpy(f->description, "YUV422");
f->pixelformat = V4L2_PIX_FMT_YUYV;
} else {
/* compressed MJPEG capture */
memset(f, 0, sizeof(*f));
f->index = 1;
f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
f->flags = V4L2_FMT_FLAG_COMPRESSED;
strcpy(f->description, "MJPEG");
@ -1322,9 +1315,6 @@ static int vidioc_g_fmt_vid_cap(struct file *file, void *fh,
if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
memset(&f->fmt.pix, 0, sizeof(struct v4l2_pix_format));
f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
switch (meye.mchip_mode) {
case MCHIP_HIC_MODE_CONT_OUT:
default:
@ -1341,8 +1331,6 @@ static int vidioc_g_fmt_vid_cap(struct file *file, void *fh,
f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
f->fmt.pix.sizeimage = f->fmt.pix.height *
f->fmt.pix.bytesperline;
f->fmt.pix.colorspace = 0;
f->fmt.pix.priv = 0;
return 0;
}