From 6174523c5948f8a36f778f0abdfc648a5d73bf46 Mon Sep 17 00:00:00 2001 From: Trent Piepho Date: Sat, 28 Mar 2009 22:25:36 -0300 Subject: [PATCH] V4L/DVB (11270): meye: Remove buffer type checks from XXX_fmt_vid_cap, XXXbuf 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. The v4l2-ioctl core only allows buffer types for which the corresponding ->vidioc_try_fmt_xxx() methods are defined to be used with vidioc_(q|dq|query)bufs() and vidioc_reqbufs(). Since this driver only defines ->vidioc_try_fmt_vid_cap() the checks can be removed from vidioc_reqbufs(), vidioc_querybuf(), vidioc_qbuf(), and vidioc_dqbuf(). Also, the buffer index is unsigned so it's not necessary to check if it is less than zero. Signed-off-by: Trent Piepho Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/meye.c | 29 +++-------------------------- 1 file changed, 3 insertions(+), 26 deletions(-) diff --git a/drivers/media/video/meye.c b/drivers/media/video/meye.c index d9d73d888aa0..2ad11f0999c6 100644 --- a/drivers/media/video/meye.c +++ b/drivers/media/video/meye.c @@ -1256,18 +1256,13 @@ static int vidioc_enum_fmt_vid_cap(struct file *file, void *fh, if (f->index > 1) return -EINVAL; - if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - if (f->index == 0) { /* standard YUV 422 capture */ - f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; f->flags = 0; strcpy(f->description, "YUV422"); f->pixelformat = V4L2_PIX_FMT_YUYV; } else { /* compressed MJPEG capture */ - f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; f->flags = V4L2_FMT_FLAG_COMPRESSED; strcpy(f->description, "MJPEG"); f->pixelformat = V4L2_PIX_FMT_MJPEG; @@ -1279,9 +1274,6 @@ static int vidioc_enum_fmt_vid_cap(struct file *file, void *fh, static int vidioc_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) { - if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_YUYV && f->fmt.pix.pixelformat != V4L2_PIX_FMT_MJPEG) return -EINVAL; @@ -1312,9 +1304,6 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void *fh, static int vidioc_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) { - if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - switch (meye.mchip_mode) { case MCHIP_HIC_MODE_CONT_OUT: default: @@ -1338,9 +1327,6 @@ static int vidioc_g_fmt_vid_cap(struct file *file, void *fh, static int vidioc_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) { - if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_YUYV && f->fmt.pix.pixelformat != V4L2_PIX_FMT_MJPEG) return -EINVAL; @@ -1386,9 +1372,6 @@ static int vidioc_reqbufs(struct file *file, void *fh, { int i; - if (req->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - if (req->memory != V4L2_MEMORY_MMAP) return -EINVAL; @@ -1429,9 +1412,9 @@ static int vidioc_reqbufs(struct file *file, void *fh, static int vidioc_querybuf(struct file *file, void *fh, struct v4l2_buffer *buf) { - int index = buf->index; + unsigned int index = buf->index; - if (index < 0 || index >= gbuffers) + if (index >= gbuffers) return -EINVAL; buf->bytesused = meye.grab_buffer[index].size; @@ -1455,13 +1438,10 @@ static int vidioc_querybuf(struct file *file, void *fh, struct v4l2_buffer *buf) static int vidioc_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf) { - if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - if (buf->memory != V4L2_MEMORY_MMAP) return -EINVAL; - if (buf->index < 0 || buf->index >= gbuffers) + if (buf->index >= gbuffers) return -EINVAL; if (meye.grab_buffer[buf->index].state != MEYE_BUF_UNUSED) @@ -1481,9 +1461,6 @@ static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf) { int reqnr; - if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - if (buf->memory != V4L2_MEMORY_MMAP) return -EINVAL; -- 2.20.1