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gxt4500: use display information in info not in var for panning

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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>
This commit is contained in:
Laurent Pinchart
2011-05-25 11:34:52 +02:00
parent d8344e090c
commit 1d4b695fa3
1 changed files with 2 additions and 2 deletions
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4
drivers/video/gxt4500.c
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@@ -543,8 +543,8 @@ static int gxt4500_pan_display(struct fb_var_screeninfo *var,
if (var->xoffset & 7)
return -EINVAL;
if (var->xoffset + var->xres > var->xres_virtual ||
var->yoffset + var->yres > var->yres_virtual)
if (var->xoffset + info->var.xres > info->var.xres_virtual ||
var->yoffset + info->var.yres > info->var.yres_virtual)
return -EINVAL;
writereg(par, REFRESH_START, (var->xoffset << 16) | var->yoffset);