From df2d79810930ead3112b4ebab86ea0f9229ccf70 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Tue, 14 Jun 2011 09:24:49 +0000 Subject: [PATCH] hgafb: 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 Cc: Ferenc Bakonyi Cc: Brent Cook Signed-off-by: Paul Mundt --- drivers/video/hgafb.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/video/hgafb.c b/drivers/video/hgafb.c index 4052718eefaa..4394389caf68 100644 --- a/drivers/video/hgafb.c +++ b/drivers/video/hgafb.c @@ -422,8 +422,8 @@ static int hgafb_pan_display(struct fb_var_screeninfo *var, var->xoffset) return -EINVAL; } else { - if (var->xoffset + var->xres > info->var.xres_virtual - || var->yoffset + var->yres > info->var.yres_virtual + if (var->xoffset + info->var.xres > info->var.xres_virtual + || var->yoffset + info->var.yres > info->var.yres_virtual || var->yoffset % 8) return -EINVAL; } -- 2.34.1