imsttfb: 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>

diff --git a/drivers/video/imsttfb.c b/drivers/video/imsttfb.c
index efb2c10656b0a89aa88d23276d47926805bbb4b2..8149356471e443af26d5a4e2cb97c818bfaf9c7f 100644 (file)
--- a/drivers/video/imsttfb.c
+++ b/drivers/video/imsttfb.c
@@ -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);
 }