drm/i915: Undo gtt scratch pte unmapping again

It apparently blows up on some machines. This functionally reverts

commit 828c79087cec61eaf4c76bb32c222fbe35ac3930
Author: Ben Widawsky <[email protected]>
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 <[email protected]>
Cc: [email protected]
Cc: Takashi Iwai <[email protected]>
Cc: Paulo Zanoni <[email protected]>
Cc: Todd Previte <[email protected]>
Signed-off-by: Daniel Vetter <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>

diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 40a2b36b276baa774028b56ae60b6ae6c59e919d..d278be110805ba50965f1e071213720434cb9e78 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -842,7 +842,7 @@ 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)