diff options
| -rw-r--r-- | drivers/video/fbdev/sm501fb.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/video/fbdev/sm501fb.c b/drivers/video/fbdev/sm501fb.c index 7734377b2d87..ed6f4f43e2d5 100644 --- a/drivers/video/fbdev/sm501fb.c +++ b/drivers/video/fbdev/sm501fb.c @@ -327,6 +327,13 @@ static int sm501fb_check_var(struct fb_var_screeninfo *var, if (var->xres_virtual > 4096 || var->yres_virtual > 2048) return -EINVAL; + /* geometry sanity checks */ + if (var->xres + var->xoffset > var->xres_virtual) + return -EINVAL; + + if (var->yres + var->yoffset > var->yres_virtual) + return -EINVAL; + /* can cope with 8,16 or 32bpp */ if (var->bits_per_pixel <= 8) |