drm/i915/gt: Pull intel_gt_init_hw() into intel_gt_resume()

Since intel_gt_resume() is always immediately proceeded by init_hw, pull
the call into intel_gt_resume, where we have the rpm and fw already
held.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Andi Shyti <andi.shyti@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191222144046.1674865-1-chris@chris-wilson.co.uk

drivers/gpu/drm/i915/gem/i915_gem_pm.c

@@ -101,28 +101,10 @@ void i915_gem_resume(struct drm_i915_private *i915)
 {
 	GEM_TRACE("%s\n", dev_name(i915->drm.dev));
 
-	intel_uncore_forcewake_get(&i915->uncore, FORCEWAKE_ALL);
-
-	if (intel_gt_init_hw(&i915->gt))
-		goto err_wedged;
-
 	/*
 	 * As we didn't flush the kernel context before suspend, we cannot
 	 * guarantee that the context image is complete. So let's just reset
 	 * it and start again.
 	 */
-	if (intel_gt_resume(&i915->gt))
-		goto err_wedged;
-
-out_unlock:
-	intel_uncore_forcewake_put(&i915->uncore, FORCEWAKE_ALL);
-	return;
-
-err_wedged:
-	if (!intel_gt_is_wedged(&i915->gt)) {
-		dev_err(i915->drm.dev,
-			"Failed to re-initialize GPU, declaring it wedged!\n");
-		intel_gt_set_wedged(&i915->gt);
-	}
-	goto out_unlock;
+	intel_gt_resume(&i915->gt);
 }

drivers/gpu/drm/i915/gt/intel_gt.c

@@ -594,14 +594,9 @@ int intel_gt_init(struct intel_gt *gt)
 
 	intel_uc_init(&gt->uc);
 
-	err = intel_gt_init_hw(gt);
-	if (err)
-		goto err_uc_init;
-
-	/* Only when the HW is re-initialised, can we replay the requests */
 	err = intel_gt_resume(gt);
 	if (err)
-		goto err_gt_init_hw;
+		goto err_uc_init;
 
 	err = __engines_record_defaults(gt);
 	if (err)
@@ -618,7 +613,6 @@ int intel_gt_init(struct intel_gt *gt)
 	goto out_fw;
 err_gt:
 	__intel_gt_disable(gt);
-err_gt_init_hw:
 	intel_uc_fini_hw(&gt->uc);
 err_uc_init:
 	intel_uc_fini(&gt->uc);

drivers/gpu/drm/i915/gt/intel_gt_pm.c

@@ -187,7 +187,7 @@ int intel_gt_resume(struct intel_gt *gt)
 {
 	struct intel_engine_cs *engine;
 	enum intel_engine_id id;
-	int err = 0;
+	int err;
 
 	GT_TRACE(gt, "\n");
 
@@ -202,6 +202,15 @@ int intel_gt_resume(struct intel_gt *gt)
 	intel_uncore_forcewake_get(gt->uncore, FORCEWAKE_ALL);
 	intel_rc6_sanitize(&gt->rc6);
 
+	/* Only when the HW is re-initialised, can we replay the requests */
+	err = intel_gt_init_hw(gt);
+	if (err) {
+		dev_err(gt->i915->drm.dev,
+			"Failed to initialize GPU, declaring it wedged!\n");
+		intel_gt_set_wedged(gt);
+		goto err_fw;
+	}
+
 	intel_rps_enable(&gt->rps);
 	intel_llc_enable(&gt->llc);
 
@@ -234,6 +243,7 @@ int intel_gt_resume(struct intel_gt *gt)
 
 	user_forcewake(gt, false);
 
+err_fw:
 	intel_uncore_forcewake_put(gt->uncore, FORCEWAKE_ALL);
 	intel_gt_pm_put(gt);