V4L/DVB (4474): On some cases, depth were not returned.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/media/video/bt8xx/bttv-driver.c b/drivers/media/video/bt8xx/bttv-driver.c
index 20dff7c316eb..3d7b97c661b9 100644
--- a/drivers/media/video/bt8xx/bttv-driver.c
+++ b/drivers/media/video/bt8xx/bttv-driver.c
@@ -2431,6 +2431,14 @@ static int bttv_do_ioctl(struct inode *inode, struct file *file,
                 fbuf->bytesperline  = btv->fbuf.fmt.bytesperline;
                 if (fh->ovfmt)
                         fbuf->depth = fh->ovfmt->depth;
+                else {
+                        if (fbuf->width)
+                                fbuf->depth   = ((fbuf->bytesperline<<3)
+                                                  + (fbuf->width-1) )
+                                                  /fbuf->width;
+                        else
+                                fbuf->depth = 0;
+                }
                 return 0;
         }
         case VIDIOCSFBUF: