linux-kernel - [PATCH 5.6 23/49] drm/amd/powerplay: fix resume failed as smu table initialize early exit

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Message-Id: <20200508123046.228896380@linuxfoundation.org>
Date:   Fri,  8 May 2020 14:35:40 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Prike Liang <Prike.Liang@....com>,
        Mengbing Wang <Mengbing.Wang@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Huang Rui <ray.huang@....com>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.6 23/49] drm/amd/powerplay: fix resume failed as smu table initialize early exit

From: Prike Liang <Prike.Liang@....com>

[ Upstream commit 45a5e639548c459a5accebad340078e4e6e0e512 ]

When the amdgpu in the suspend/resume loop need notify the dpm disabled,
otherwise the smu table will be uninitialize and result in resume failed.

Signed-off-by: Prike Liang <Prike.Liang@....com>
Tested-by: Mengbing Wang <Mengbing.Wang@....com>
Reviewed-by: Alex Deucher <alexander.deucher@....com>
Reviewed-by: Huang Rui <ray.huang@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/amd/powerplay/renoir_ppt.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/powerplay/renoir_ppt.c b/drivers/gpu/drm/amd/powerplay/renoir_ppt.c
index f7a1ce37227cd..4a52c310058d1 100644
--- a/drivers/gpu/drm/amd/powerplay/renoir_ppt.c
+++ b/drivers/gpu/drm/amd/powerplay/renoir_ppt.c
@@ -889,12 +889,17 @@ static int renoir_read_sensor(struct smu_context *smu,
 
 static bool renoir_is_dpm_running(struct smu_context *smu)
 {
+	struct amdgpu_device *adev = smu->adev;
+
 	/*
 	 * Util now, the pmfw hasn't exported the interface of SMU
 	 * feature mask to APU SKU so just force on all the feature
 	 * at early initial stage.
 	 */
-	return true;
+	if (adev->in_suspend)
+		return false;
+	else
+		return true;
 
 }
 
-- 
2.20.1