From ec22f256a60ccf0dedd4ee305e616b6f17ed2bb7 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Thu, 4 Jul 2019 21:04:53 +0100
Subject: drm/i915/overlay: Stash the kernel context on initialisation
Git-commit: ec22f256a60ccf0dedd4ee305e616b6f17ed2bb7
Patch-mainline: v5.4-rc1
References: bsc#1152489

Simplify runtime request creation by storing the context we need to use
during initialisation. This allows us to remove one more hardcoded
engine lookup.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190704200455.14870-1-chris@chris-wilson.co.uk
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/i915/display/intel_overlay.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_overlay.c b/drivers/gpu/drm/i915/display/intel_overlay.c
index 21339b7f6a3e..07929726b780 100644
--- a/drivers/gpu/drm/i915/display/intel_overlay.c
+++ b/drivers/gpu/drm/i915/display/intel_overlay.c
@@ -175,6 +175,7 @@ struct overlay_registers {
 
 struct intel_overlay {
 	struct drm_i915_private *i915;
+	struct intel_context *context;
 	struct intel_crtc *crtc;
 	struct i915_vma *vma;
 	struct i915_vma *old_vma;
@@ -239,9 +240,7 @@ static int intel_overlay_do_wait_request(struct intel_overlay *overlay,
 
 static struct i915_request *alloc_request(struct intel_overlay *overlay)
 {
-	struct intel_engine_cs *engine = overlay->i915->engine[RCS0];
-
-	return i915_request_create(engine->kernel_context);
+	return i915_request_create(overlay->context);
 }
 
 /* overlay needs to be disable in OCMD reg */
@@ -1359,11 +1358,16 @@ void intel_overlay_setup(struct drm_i915_private *dev_priv)
 	if (!HAS_OVERLAY(dev_priv))
 		return;
 
+	if (!HAS_ENGINE(dev_priv, RCS0))
+		return;
+
 	overlay = kzalloc(sizeof(*overlay), GFP_KERNEL);
 	if (!overlay)
 		return;
 
 	overlay->i915 = dev_priv;
+	overlay->context = dev_priv->engine[RCS0]->kernel_context;
+	GEM_BUG_ON(!overlay->context);
 
 	overlay->color_key = 0x0101fe;
 	overlay->color_key_enabled = true;
-- 
2.28.0