imsttfb: 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 08:31:39 +0000 (10:31 +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/imsttfb.c

index efb2c10656b0a89aa88d23276d47926805bbb4b2..8149356471e443af26d5a4e2cb97c818bfaf9c7f 100644 (file)
@@ -749,7 +749,7 @@ set_offset (struct fb_var_screeninfo *var, struct fb_info *info)
 {
        struct imstt_par *par = info->par;
        __u32 off = var->yoffset * (info->fix.line_length >> 3)
-                   + ((var->xoffset * (var->bits_per_pixel >> 3)) >> 3);
+                   + ((var->xoffset * (info->var.bits_per_pixel >> 3)) >> 3);
        write_reg_le32(par->dc_regs, SSR, off);
 }