diff options
Diffstat (limited to 'drivers/video/vga16fb.c')
| -rw-r--r-- | drivers/video/vga16fb.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/video/vga16fb.c b/drivers/video/vga16fb.c index 9b3c5923365e..9d2751717896 100644 --- a/drivers/video/vga16fb.c +++ b/drivers/video/vga16fb.c @@ -1087,12 +1087,15 @@ static void vga16fb_copyarea(struct fb_info *info, const struct fb_copyarea *are width = x2 - dx; height = y2 - dy; + if (sx + dx < old_dx || sy + dy < old_dy) + return; + /* update sx1,sy1 */ sx += (dx - old_dx); sy += (dy - old_dy); /* the source must be completely inside the virtual screen */ - if (sx < 0 || sy < 0 || (sx + width) > vxres || (sy + height) > vyres) + if (sx + width > vxres || sy + height > vyres) return; switch (info->fix.type) { |