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| author | Trent Piepho <xyzzy@speakeasy.org> | 2009-03-28 18:25:36 -0700 |
|---|---|---|
| committer | Trent Piepho <xyzzy@speakeasy.org> | 2009-03-28 18:25:36 -0700 |
| commit | d52037715e9e029fa316efb4a5a445c339b170cb (patch) | |
| tree | 05f235b36795eb69c7c84b4af5ba38c07938ac13 | |
| parent | 552402f4297b8ba2fb1631079e66d1755b181796 (diff) | |
| download | mediapointer-dvb-s2-d52037715e9e029fa316efb4a5a445c339b170cb.tar.gz mediapointer-dvb-s2-d52037715e9e029fa316efb4a5a445c339b170cb.tar.bz2 | |
zr364xx: Remove code for things already done by video_ioctl2
From: Trent Piepho <xyzzy@speakeasy.org>
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().
Priority: normal
Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
CC: Antoine Jacquet <royale@zerezo.com>
| -rw-r--r-- | linux/drivers/media/video/zr364xx.c | 16 |
1 files changed, 0 insertions, 16 deletions
diff --git a/linux/drivers/media/video/zr364xx.c b/linux/drivers/media/video/zr364xx.c index 698b7b9ba..2e4d8147b 100644 --- a/linux/drivers/media/video/zr364xx.c +++ b/linux/drivers/media/video/zr364xx.c @@ -427,7 +427,6 @@ 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; @@ -438,8 +437,6 @@ 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; @@ -531,11 +528,6 @@ 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; @@ -552,8 +544,6 @@ 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 && @@ -579,10 +569,6 @@ 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; @@ -604,8 +590,6 @@ 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 && |