[PATCH 1/2] drm/i915/uc: Disable GuC submission on suspend

[Michal Wajdeczko]

Shortly after suspend we will sanitize and reset the GuC,
so there is no reason to leave GuC submission enabled.
We'll try to enable GuC submission again on resume.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko at intel.com>
---
 drivers/gpu/drm/i915/intel_uc.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_uc.c b/drivers/gpu/drm/i915/intel_uc.c
index 9d5ffd7..35dd0ea 100644
--- a/drivers/gpu/drm/i915/intel_uc.c
+++ b/drivers/gpu/drm/i915/intel_uc.c
@@ -489,6 +489,9 @@ int intel_uc_suspend(struct drm_i915_private *i915)
 		return err;
 	}
 
+	if (USES_GUC_SUBMISSION(dev_priv))
+		intel_guc_submission_disable(guc);
+
 	gen9_disable_guc_interrupts(i915);
 
 	return 0;
@@ -514,5 +517,8 @@ int intel_uc_resume(struct drm_i915_private *i915)
 		return err;
 	}
 
-	return 0;
+	if (USES_GUC_SUBMISSION(dev_priv))
+		err = intel_guc_submission_enable(guc);
+
+	return err;
 }
-- 
1.9.1