agp/intel: Fix wrong kunmap in i830_cleanup()

Add a missing NULL check and fix the wrong address passed to kunmap()
in i830_cleanup().

Cc: stable@kernel.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>
[danvet: added cc stable]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Takashi Iwai 2010-12-04 16:13:06 +01:00 committed by Chris Wilson
parent 49078f7d10
commit 136711be41

View File

@ -812,8 +812,10 @@ static int intel_fake_agp_fetch_size(void)
static void i830_cleanup(void)
{
kunmap(intel_private.i8xx_page);
intel_private.i8xx_flush_page = NULL;
if (intel_private.i8xx_flush_page) {
kunmap(intel_private.i8xx_flush_page);
intel_private.i8xx_flush_page = NULL;
}
__free_page(intel_private.i8xx_page);
intel_private.i8xx_page = NULL;