68328fb: use display information in info not in var for panning

We must not use any information in the passed var besides xoffset,
yoffset and vmode as otherwise applications might abuse it.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

diff --git a/drivers/video/68328fb.c b/drivers/video/68328fb.c
index 75a39ea..a425d65 100644 (file)
--- a/drivers/video/68328fb.c
+++ b/drivers/video/68328fb.c
@@ -378,8 +378,8 @@ static int mc68x328fb_pan_display(struct fb_var_screeninfo *var,
                    || var->xoffset)
                        return -EINVAL;
        } else {
-               if (var->xoffset + var->xres > info->var.xres_virtual ||
-                   var->yoffset + var->yres > info->var.yres_virtual)
+               if (var->xoffset + info->var.xres > info->var.xres_virtual ||
+                   var->yoffset + info->var.yres > info->var.yres_virtual)
                        return -EINVAL;
        }
        info->var.xoffset = var->xoffset;