sm501fb: 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/sm501fb.c b/drivers/video/sm501fb.c
index 6294dca955005988f384fbf0bdae104f43c8037d..a78254cf8e83eb971db5bd7f6cb499745a6741f6 100644 (file)
--- a/drivers/video/sm501fb.c
+++ b/drivers/video/sm501fb.c
@@ -582,7 +582,7 @@ static int sm501fb_pan_crt(struct fb_var_screeninfo *var,
 {
        struct sm501fb_par  *par = info->par;
        struct sm501fb_info *fbi = par->info;
-       unsigned int bytes_pixel = var->bits_per_pixel / 8;
+       unsigned int bytes_pixel = info->var.bits_per_pixel / 8;
        unsigned long reg;
        unsigned long xoffs;
 
@@ -614,10 +614,10 @@ static int sm501fb_pan_pnl(struct fb_var_screeninfo *var,
        struct sm501fb_info *fbi = par->info;
        unsigned long reg;
 
-       reg = var->xoffset | (var->xres_virtual << 16);
+       reg = var->xoffset | (info->var.xres_virtual << 16);
        smc501_writel(reg, fbi->regs + SM501_DC_PANEL_FB_WIDTH);
 
-       reg = var->yoffset | (var->yres_virtual << 16);
+       reg = var->yoffset | (info->var.yres_virtual << 16);
        smc501_writel(reg, fbi->regs + SM501_DC_PANEL_FB_HEIGHT);
 
        sm501fb_sync_regs(fbi);