if (var->hsync_len < 1 || var->hsync_len > 64)
printk(KERN_ERR "%s: invalid hsync_len %d\n",
info->fix.id, var->hsync_len);
- if (var->left_margin > 255)
+ if (var->left_margin < 3 || var->left_margin > 255)
printk(KERN_ERR "%s: invalid left_margin %d\n",
info->fix.id, var->left_margin);
- if (var->right_margin > 255)
+ if (var->right_margin < 1 || var->right_margin > 255)
printk(KERN_ERR "%s: invalid right_margin %d\n",
info->fix.id, var->right_margin);
if (var->yres < 1 || var->yres > ymax_mask)