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From c0e62d528ca2557326eedc2f43460b6f4afcdf7b Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Wed, 13 Apr 2016 23:37:42 -0400
Subject: [PATCH 17/17] drm/amdgpu/acp: fix resume on CZ systems with AZ audio
Nothing to do on resume on systems with AZ audio.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Kalyan Alle <kalyan.alle@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
index 37ecc36..6549b3c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
@@ -427,6 +427,10 @@ static int acp_resume(void *handle)
struct acp_pm_domain *apd;
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+ /* return early if no ACP */
+ if (!adev->acp.acp_genpd)
+ return 0;
+
/* SMU block will power on ACP irrespective of ACP runtime status.
* Power off explicitly based on genpd ACP runtime status so that ACP
* hw and ACP-genpd status are in sync.
--
2.7.4
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