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path: root/drivers/media/video/v4l1-compat.c
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Diffstat (limited to 'drivers/media/video/v4l1-compat.c')
-rw-r--r--drivers/media/video/v4l1-compat.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/media/video/v4l1-compat.c b/drivers/media/video/v4l1-compat.c
index d7c3fcb..1d899e2 100644
--- a/drivers/media/video/v4l1-compat.c
+++ b/drivers/media/video/v4l1-compat.c
@@ -349,6 +349,8 @@ v4l_compat_translate_ioctl(struct inode *inode,
{
struct video_buffer *buffer = arg;
+ memset(buffer, 0, sizeof(*buffer));
+
err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2);
if (err < 0) {
dprintk("VIDIOCGFBUF / VIDIOC_G_FBUF: %d\n",err);
@@ -361,7 +363,7 @@ v4l_compat_translate_ioctl(struct inode *inode,
switch (fbuf2.fmt.pixelformat) {
case V4L2_PIX_FMT_RGB332:
buffer->depth = 8;
- break;
+ break;
case V4L2_PIX_FMT_RGB555:
buffer->depth = 15;
break;
@@ -377,9 +379,13 @@ v4l_compat_translate_ioctl(struct inode *inode,
default:
buffer->depth = 0;
}
- if (0 != fbuf2.fmt.bytesperline)
+ if (fbuf2.fmt.bytesperline) {
buffer->bytesperline = fbuf2.fmt.bytesperline;
- else {
+ if (!buffer->depth && buffer->width)
+ buffer->depth = ((fbuf2.fmt.bytesperline<<3)
+ + (buffer->width-1) )
+ /buffer->width;
+ } else {
buffer->bytesperline =
(buffer->width * buffer->depth + 7) & 7;
buffer->bytesperline >>= 3;
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