[PATCH 17/18] drm/i915: Taking forcewake during GuC load.

From: yu.dai@intel.com
To: intel-gfx@lists.freedesktop.org
Cc: Sagar Kamble <sagar.a.kamble@intel.com>
Subject: [PATCH 17/18] drm/i915: Taking forcewake during GuC load.
Date: Thu, 26 Mar 2015 12:41:24 -0700	[thread overview]
Message-ID: <1427398885-31988-18-git-send-email-yu.dai@intel.com> (raw)
In-Reply-To: <1427398885-31988-1-git-send-email-yu.dai@intel.com>

From: Sagar Kamble <sagar.a.kamble@intel.com>

Need to take forcewake before GuC loading.

Issue: VIZ-4884
Change-Id: Ie422fc1e122933b161ff63cab23622197e6bba54
Signed-off-by: Sagar Kamble <sagar.a.kamble@intel.com>
---
 drivers/gpu/drm/i915/intel_guc_loader.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c
index 7c33cc5..4ae9e84 100644
--- a/drivers/gpu/drm/i915/intel_guc_loader.c
+++ b/drivers/gpu/drm/i915/intel_guc_loader.c
@@ -273,6 +273,7 @@ static int guc_load_ucode(struct drm_device *dev)
 	int ret;
 
 	WARN_ON(!mutex_is_locked(&dev->struct_mutex));
+	intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
 
 	ret = i915_gem_obj_ggtt_pin(guc_fw->uc_fw_obj, 0, 0);
 	if (ret)
@@ -326,6 +327,8 @@ out:
 	if (pinned)
 		i915_gem_object_ggtt_unpin(guc_fw->uc_fw_obj);
 
+	intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
+
 	return ret;
 }
 
-- 
1.9.1

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