From 44a7102484db0ddfa6f855b57ffe0566f739b55a Mon Sep 17 00:00:00 2001
From: Matthew Auld <matthew.auld@intel.com>
Date: Tue, 12 Apr 2016 16:57:42 +0100
Subject: [PATCH] drm/i915: call kunmap_px on pt_vaddr
Git-commit: 44a7102484db0ddfa6f855b57ffe0566f739b55a
Patch-mainline: 4.7-rc1
References: bsc#1005545

We need to kunmap pt_vaddr and not pt itself, otherwise we end up
mapping a bunch of pages without ever unmapping them.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Fixes: d1c54acd67dc ("drm/i915/gtt: Introduce kmap|kunmap for dma page")
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1460476663-24890-4-git-send-email-matthew.auld@intel.com
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/gpu/drm/i915/i915_gem_gtt.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -739,7 +739,7 @@ static void gen8_ppgtt_clear_pte_range(s
 			num_entries--;
 		}
 
-		kunmap_px(ppgtt, pt);
+		kunmap_px(ppgtt, pt_vaddr);
 
 		pte = 0;
 		if (++pde == I915_PDES) {
