diff options
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/usb/em28xx/em28xx-video.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-video.c b/drivers/media/usb/em28xx/em28xx-video.c index 8c87f3fbd0cf..86db1e1f8ab5 100644 --- a/drivers/media/usb/em28xx/em28xx-video.c +++ b/drivers/media/usb/em28xx/em28xx-video.c @@ -1232,6 +1232,12 @@ static void scale_to_size(struct em28xx *dev, *width = (((unsigned long)maxw) << 12) / (hscale + 4096L); *height = (((unsigned long)maxh) << 12) / (vscale + 4096L); + + /* Don't let width or height to be zero */ + if (*width < 1) + *width = 1; + if (*height < 1) + *height = 1; } /* ------------------------------------------------------------------ @@ -1307,6 +1313,11 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0); } + /* Avoid division by zero at size_to_scale */ + if (width < 1) + width = 1; + if (height < 1) + height = 1; size_to_scale(dev, width, height, &hscale, &vscale); scale_to_size(dev, hscale, vscale, &width, &height); |