From f5b9cc6a66feee205609ef98b1f5a51168c26b74 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 25 May 2011 11:34:52 +0200 Subject: [PATCH] intelfb: 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 --- drivers/video/intelfb/intelfbhw.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/video/intelfb/intelfbhw.c b/drivers/video/intelfb/intelfbhw.c index 38065cf..fbad61d 100644 --- a/drivers/video/intelfb/intelfbhw.c +++ b/drivers/video/intelfb/intelfbhw.c @@ -390,12 +390,12 @@ int intelfbhw_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) xoffset = ROUND_DOWN_TO(var->xoffset, 8); yoffset = var->yoffset; - if ((xoffset + var->xres > var->xres_virtual) || - (yoffset + var->yres > var->yres_virtual)) + if ((xoffset + info->var.xres > info->var.xres_virtual) || + (yoffset + info->var.yres > info->var.yres_virtual)) return -EINVAL; offset = (yoffset * dinfo->pitch) + - (xoffset * var->bits_per_pixel) / 8; + (xoffset * info->var.bits_per_pixel) / 8; offset += dinfo->fb.offset << 12; -- 2.7.4