@@ -671,10 +671,10 @@ static int imxfb_activate_var(struct fb_var_screeninfo *var, struct fb_info *inf
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 > 255 || var->left_margin < 3)
printk(KERN_ERR "%s: invalid left_margin %d\n",
info->fix.id, var->left_margin);
- if (var->right_margin > 255)
+ if (var->right_margin > 255 || var->right_margin < 1)
printk(KERN_ERR "%s: invalid right_margin %d\n",
info->fix.id, var->right_margin);
if (var->yres < 1 || var->yres > ymax_mask)
A user not familiar with this LCD controller might assume it's possible to use arbitrary short horizontal margins if the display allows that. Make it clear it's not. Signed-off-by: Paul Fertser <fercerpav@gmail.com> --- drivers/video/imxfb.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-)