drm/i915: Undo gtt scratch pte unmapping again

commit 8ee661b505613ef2747b350ca2871a31b3781bee upstream.

It apparently blows up on some machines. This functionally reverts

commit 828c79087cec61eaf4c76bb32c222fbe35ac3930
Author: Ben Widawsky <benjamin.widawsky@intel.com>
Date:   Wed Oct 16 09:21:30 2013 -0700

    drm/i915: Disable GGTT PTEs on GEN6+ suspend

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=64841
Reported-and-Tested-by: Brad  Jackson <bjackson0971@gmail.com>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: Todd Previte <tprevite@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index d3c3b5b15824ee8bb927a7b1a382582309b31376..e79720d5ceff501afad5cf0c608ecea5e92787b5 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -828,7 +828,7 @@ void i915_gem_suspend_gtt_mappings(struct drm_device *dev)
        dev_priv->gtt.base.clear_range(&dev_priv->gtt.base,
                                       dev_priv->gtt.base.start / PAGE_SIZE,
                                       dev_priv->gtt.base.total / PAGE_SIZE,
-                                      false);
+                                      true);
 }
 
 void i915_gem_restore_gtt_mappings(struct drm_device *dev)