From: Michał Winiarski <[email protected]>

Also:
Revert "drm/i915/guc: Assert that we switch between known ggtt->invalidate 
functions"

This reverts commit 04f7b24eccdfae680a36e9825fe0d61dcd5ed528.

Signed-off-by: Chris Wilson <[email protected]>
Link: 
https://patchwork.freedesktop.org/patch/msgid/[email protected]
---
 drivers/gpu/drm/i915/i915_gem_gtt.c | 8 ++------
 drivers/gpu/drm/i915/i915_params.c  | 4 ++--
 2 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c 
b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 09e524dbc090..478a8d42aeb0 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -3189,17 +3189,13 @@ int i915_ggtt_enable_hw(struct drm_i915_private 
*dev_priv)
 
 void i915_ggtt_enable_guc(struct drm_i915_private *i915)
 {
-       GEM_BUG_ON(i915->ggtt.invalidate != gen6_ggtt_invalidate);
-
        i915->ggtt.invalidate = guc_ggtt_invalidate;
 }
 
 void i915_ggtt_disable_guc(struct drm_i915_private *i915)
 {
-       /* We should only be called after i915_ggtt_enable_guc() */
-       GEM_BUG_ON(i915->ggtt.invalidate != guc_ggtt_invalidate);
-
-       i915->ggtt.invalidate = gen6_ggtt_invalidate;
+       if (i915->ggtt.invalidate == guc_ggtt_invalidate)
+               i915->ggtt.invalidate = gen6_ggtt_invalidate;
 }
 
 void i915_gem_restore_gtt_mappings(struct drm_i915_private *dev_priv)
diff --git a/drivers/gpu/drm/i915/i915_params.c 
b/drivers/gpu/drm/i915/i915_params.c
index 8ab003dca113..c9d72f1b8383 100644
--- a/drivers/gpu/drm/i915/i915_params.c
+++ b/drivers/gpu/drm/i915/i915_params.c
@@ -56,8 +56,8 @@ struct i915_params i915 __read_mostly = {
        .verbose_state_checks = 1,
        .nuclear_pageflip = 0,
        .edp_vswing = 0,
-       .enable_guc_loading = 0,
-       .enable_guc_submission = 0,
+       .enable_guc_loading = 2,
+       .enable_guc_submission = 2,
        .guc_log_level = -1,
        .guc_firmware_path = NULL,
        .huc_firmware_path = NULL,
-- 
2.14.1

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