fbdev: da8xx: 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>
Cc: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Cc: Martin Ambrose <martin@ti.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

diff --git a/drivers/video/da8xx-fb.c b/drivers/video/da8xx-fb.c
index fcdac87..8d4e4eb 100644 (file)
--- a/drivers/video/da8xx-fb.c
+++ b/drivers/video/da8xx-fb.c
@@ -877,8 +877,8 @@ static int da8xx_pan_display(struct fb_var_screeninfo *var,
 
                        start   = fix->smem_start +
                                new_var.yoffset * fix->line_length +
-                               new_var.xoffset * var->bits_per_pixel / 8;
-                       end     = start + var->yres * fix->line_length - 1;
+                               new_var.xoffset * fbi->var.bits_per_pixel / 8;
+                       end     = start + fbi->var.yres * fix->line_length - 1;
                        par->dma_start  = start;
                        par->dma_end    = end;
                }