redonkable/alistair23-linux
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V4L/DVB (10818): usbvision: 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 g_audio, queryctrl, and enum_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 df7bdfcd0e
commit 3836725518
1 changed files with 0 additions and 7 deletions
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7
drivers/media/video/usbvision/usbvision-video.c
View file

@ -697,7 +697,6 @@ static int vidioc_g_audio (struct file *file, void *priv, struct v4l2_audio *a)
{
struct usb_usbvision *usbvision = video_drvdata(file);
memset(a,0,sizeof(*a));
if(usbvision->radio) {
strcpy(a->name,"Radio");
} else {
@ -721,10 +720,6 @@ static int vidioc_queryctrl (struct file *file, void *priv,
struct v4l2_queryctrl *ctrl)
{
struct usb_usbvision *usbvision = video_drvdata(file);
int id=ctrl->id;
memset(ctrl,0,sizeof(*ctrl));
ctrl->id=id;
call_all(usbvision, core, queryctrl, ctrl);
@ -926,11 +921,9 @@ static int vidioc_enum_fmt_vid_cap (struct file *file, void *priv,
if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
return -EINVAL;
}
vfd->flags = 0;
vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
memset(vfd->reserved, 0, sizeof(vfd->reserved));
return 0;
}