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>
{
struct usb_usbvision *usbvision = video_drvdata(file);
{
struct usb_usbvision *usbvision = video_drvdata(file);
- memset(a,0,sizeof(*a));
if(usbvision->radio) {
strcpy(a->name,"Radio");
} else {
if(usbvision->radio) {
strcpy(a->name,"Radio");
} else {
struct v4l2_queryctrl *ctrl)
{
struct usb_usbvision *usbvision = video_drvdata(file);
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);
call_all(usbvision, core, queryctrl, ctrl);
if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
return -EINVAL;
}
if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
return -EINVAL;
}
vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
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));