diff options
| author |   Trent Piepho <xyzzy@speakeasy.org> | 2009-03-28 22:25:36 -0300 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-03-30 12:43:46 -0300 |
| commit | 8f84a775c2ad8a0d95f944f6397248b9c0c25e50 (patch) | |
| tree | c43a3e360ba6b1cfb1d96ccb0a4a0592d584c650 /drivers | |
| parent | V4L/DVB (11271): usbvision: Remove buffer type checks from enum_fmt_vid_cap, XXXbuf (diff) | |
| download | linux-dev-8f84a775c2ad8a0d95f944f6397248b9c0c25e50.tar.xz linux-dev-8f84a775c2ad8a0d95f944f6397248b9c0c25e50.zip | |
V4L/DVB (11272): zr364xx: Remove code for things already done by video_ioctl2
The ->vidioc_(s|g|try|enum)_fmt_vid_cap() methods are only called on
VIDEO_CAPTURE buffers. Thus, there is no need to check or set the buffer's
'type' field since it must already be set to VIDEO_CAPTURE. Checking the
buffer type can be removed from zr364xx_vidioc_(s|g|try|enum)_fmt_vid_cap().
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 can be removed from zr364xx_vidioc_querycap(),
zr364xx_vidioc_enum_input(), zr364xx_vidioc_enum_fmt_vid_cap(), and
zr364xx_vidioc_g_fmt_vid_cap().
Cc: Antoine Jacquet <royale@zerezo.com>
Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/video/zr364xx.c | 16 |
1 files changed, 0 insertions, 16 deletions
diff --git a/drivers/media/video/zr364xx.c b/drivers/media/video/zr364xx.c index f2f8cdd71c46..221409fe1682 100644 --- a/drivers/media/video/zr364xx.c +++ b/drivers/media/video/zr364xx.c @@ -426,7 +426,6 @@ static ssize_t zr364xx_read(struct file *file, char __user *buf, size_t cnt, static int zr364xx_vidioc_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { - memset(cap, 0, sizeof(*cap)); strcpy(cap->driver, DRIVER_DESC); cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE; return 0; @@ -437,8 +436,6 @@ static int zr364xx_vidioc_enum_input(struct file *file, void *priv, { if (i->index != 0) return -EINVAL; - memset(i, 0, sizeof(*i)); - i->index = 0; strcpy(i->name, DRIVER_DESC " Camera"); i->type = V4L2_INPUT_TYPE_CAMERA; return 0; @@ -530,11 +527,6 @@ static int zr364xx_vidioc_enum_fmt_vid_cap(struct file *file, { if (f->index > 0) return -EINVAL; - if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - memset(f, 0, sizeof(*f)); - f->index = 0; - f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; f->flags = V4L2_FMT_FLAG_COMPRESSED; strcpy(f->description, "JPEG"); f->pixelformat = V4L2_PIX_FMT_JPEG; @@ -551,8 +543,6 @@ static int zr364xx_vidioc_try_fmt_vid_cap(struct file *file, void *priv, return -ENODEV; cam = video_get_drvdata(vdev); - if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_JPEG) return -EINVAL; if (f->fmt.pix.field != V4L2_FIELD_ANY && @@ -578,10 +568,6 @@ static int zr364xx_vidioc_g_fmt_vid_cap(struct file *file, void *priv, return -ENODEV; cam = video_get_drvdata(vdev); - 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; f->fmt.pix.pixelformat = V4L2_PIX_FMT_JPEG; f->fmt.pix.field = V4L2_FIELD_NONE; f->fmt.pix.width = cam->width; @@ -603,8 +589,6 @@ static int zr364xx_vidioc_s_fmt_vid_cap(struct file *file, void *priv, return -ENODEV; cam = video_get_drvdata(vdev); - if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_JPEG) return -EINVAL; if (f->fmt.pix.field != V4L2_FIELD_ANY && |