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fbdev: unicore32: 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: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Laurent Pinchart 2011-06-14 09:24:46 +00:00 committed by Paul Mundt
parent 1dbe8514fd
commit aa7984cf51
1 changed files with 2 additions and 2 deletions
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4
drivers/video/fb-puv3.c
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@ -624,8 +624,8 @@ static int unifb_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)
return -EINVAL;
}
info->var.xoffset = var->xoffset;