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pm3fb: 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: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Laurent Pinchart 2011-06-14 09:24:56 +00:00 committed by Paul Mundt
parent df2d798109
commit 1fdb518f9f
1 changed files with 2 additions and 2 deletions
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4
drivers/video/pm3fb.c
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@ -1147,9 +1147,9 @@ static int pm3fb_pan_display(struct fb_var_screeninfo *var,
struct fb_info *info)
{
struct pm3_par *par = info->par;
const u32 xres = (var->xres + 31) & ~31;
const u32 xres = (info->var.xres + 31) & ~31;
par->base = pm3fb_shift_bpp(var->bits_per_pixel,
par->base = pm3fb_shift_bpp(info->var.bits_per_pixel,
(var->yoffset * xres)
+ var->xoffset);
PM3_WAIT(par, 1);