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tridentfb: 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 09:25:02 +00:00 committed by Paul Mundt
parent 635e9620e8
commit e4c735af00
1 changed files with 2 additions and 2 deletions
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4
drivers/video/tridentfb.c
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@ -987,8 +987,8 @@ static int tridentfb_pan_display(struct fb_var_screeninfo *var,
unsigned int offset;
debug("enter\n");
offset = (var->xoffset + (var->yoffset * var->xres_virtual))
* var->bits_per_pixel / 32;
offset = (var->xoffset + (var->yoffset * info->var.xres_virtual))
* info->var.bits_per_pixel / 32;
set_screen_start(par, offset);
debug("exit\n");
return 0;