From a8dc0f6d187bcccc7c1a41f0062badbf3d74e44c Mon Sep 17 00:00:00 2001
From: Michal Wajdeczko <michal.wajdeczko@intel.com>
Date: Sun, 18 Aug 2019 09:52:04 +0000
Subject: drm/i915/uc: Never fail on HuC firmware errors
Git-commit: a8dc0f6d187bcccc7c1a41f0062badbf3d74e44c
Patch-mainline: v5.4-rc1
References: bsc#1152489

There is no need to mark whole GPU as wedged just because
of the custom HuC fw failure as users can always verify
actual HuC firmware status using existing HUC_STATUS ioctl.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190818095204.31568-4-michal.wajdeczko@intel.com
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/i915/gt/uc/intel_huc.c |  4 +++-
 drivers/gpu/drm/i915/gt/uc/intel_uc.c  | 13 ++-----------
 2 files changed, 5 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/uc/intel_huc.c b/drivers/gpu/drm/i915/gt/uc/intel_huc.c
index af61ae864ab8..d4625c97b4f9 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_huc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_huc.c
@@ -129,9 +129,11 @@ int intel_huc_auth(struct intel_huc *huc)
 	struct intel_guc *guc = &gt->uc.guc;
 	int ret;
 
-	GEM_BUG_ON(!intel_uc_fw_is_loaded(&huc->fw));
 	GEM_BUG_ON(intel_huc_is_authenticated(huc));
 
+	if (!intel_uc_fw_is_loaded(&huc->fw))
+		return -ENOEXEC;
+
 	ret = i915_inject_load_error(gt->i915, -ENXIO);
 	if (ret)
 		goto fail;
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc.c b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
index 10978e7ff06d..71ee7ab035cc 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
@@ -457,12 +457,7 @@ int intel_uc_init_hw(struct intel_uc *uc)
 		if (ret)
 			goto err_out;
 
-		if (intel_uc_uses_huc(uc)) {
-			ret = intel_huc_fw_upload(huc);
-			if (ret && intel_uc_fw_is_overridden(&huc->fw))
-				goto err_out;
-		}
-
+		intel_huc_fw_upload(huc);
 		intel_guc_ads_reset(guc);
 		intel_guc_write_params(guc);
 		ret = intel_guc_fw_upload(guc);
@@ -481,11 +476,7 @@ int intel_uc_init_hw(struct intel_uc *uc)
 	if (ret)
 		goto err_log_capture;
 
-	if (intel_uc_fw_is_loaded(&huc->fw)) {
-		ret = intel_huc_auth(huc);
-		if (ret && intel_uc_fw_is_overridden(&huc->fw))
-			goto err_communication;
-	}
+	intel_huc_auth(huc);
 
 	ret = intel_guc_sample_forcewake(guc);
 	if (ret)
-- 
2.28.0