acornfb: use display information in info not in var for panning
authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Wed, 25 May 2011 09:34:52 +0000 (11:34 +0200)
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Fri, 19 Aug 2011 08:29:34 +0000 (10:29 +0200)
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>
drivers/video/acornfb.c

index 3bacc1290548f21c7e2e7a084448feaaa5fd7bed..b303f17150654a8a4d0237f41977421a29cd715b 100644 (file)
@@ -850,9 +850,9 @@ acornfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
        u_int y_bottom = var->yoffset;
 
        if (!(var->vmode & FB_VMODE_YWRAP))
-               y_bottom += var->yres;
+               y_bottom += info->var.yres;
 
-       if (y_bottom > var->yres_virtual)
+       if (y_bottom > info->var.yres_virtual)
                return -EINVAL;
 
        acornfb_update_dma(info, var);