V4L/DVB (11267): cafe_ccic: Remove buffer type check from XXXbuf
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().
This driver only defines ->vidioc_try_fmt_vid_cap() so only VIDEO_CAPTURE
buffers are allowed to be used with cafe_vidioc_reqbufs(),
cafe_vidioc_querybuf(), cafe_vidioc_qbuf(), and cafe_vidioc_dqbuf().
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. So the
check in cafe_vidioc_enum_fmt_vid_cap() can be removed.
The 'index' field of v4l2_buffer is unsigned so the checks for it being
less than zero can be removed too.
Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/cafe_ccic.c b/drivers/media/video/cafe_ccic.c
index 1c79369..7abe94d 100644
--- a/drivers/media/video/cafe_ccic.c
+++ b/drivers/media/video/cafe_ccic.c
@@ -1151,8 +1151,6 @@
* Make sure it's something we can do. User pointers could be
* implemented without great pain, but that's not been done yet.
*/
- if (req->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL;
if (req->memory != V4L2_MEMORY_MMAP)
return -EINVAL;
/*
@@ -1216,9 +1214,7 @@
int ret = -EINVAL;
mutex_lock(&cam->s_mutex);
- if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- goto out;
- if (buf->index < 0 || buf->index >= cam->n_sbufs)
+ if (buf->index >= cam->n_sbufs)
goto out;
*buf = cam->sb_bufs[buf->index].v4lbuf;
ret = 0;
@@ -1236,9 +1232,7 @@
unsigned long flags;
mutex_lock(&cam->s_mutex);
- if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- goto out;
- if (buf->index < 0 || buf->index >= cam->n_sbufs)
+ if (buf->index >= cam->n_sbufs)
goto out;
sbuf = cam->sb_bufs + buf->index;
if (sbuf->v4lbuf.flags & V4L2_BUF_FLAG_QUEUED) {
@@ -1269,8 +1263,6 @@
unsigned long flags;
mutex_lock(&cam->s_mutex);
- if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- goto out_unlock;
if (cam->state != S_STREAMING)
goto out_unlock;
if (list_empty(&cam->sb_full) && filp->f_flags & O_NONBLOCK) {
@@ -1503,8 +1495,6 @@
struct cafe_camera *cam = priv;
int ret;
- if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL;
mutex_lock(&cam->s_mutex);
ret = sensor_call(cam, video, enum_fmt, fmt);
mutex_unlock(&cam->s_mutex);