From: Stanley.Yang <Stanley.Yang@amd.com>
Date: Thu, 10 Mar 2022 13:55:09 +0000 (+0800)
Subject: drm/amd/pm: use pm mutex to protect ecc info table
X-Git-Tag: v5.18-rc1~134^2^2~29
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a29d44aea1aef0bc58d4951f2ddbe5b22d9a2e94;p=thirdparty%2Fkernel%2Flinux.git

drm/amd/pm: use pm mutex to protect ecc info table

Signed-off-by: Stanley.Yang <Stanley.Yang@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/pm/amdgpu_dpm.c b/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
index 9a892d6d1d7af..89fbee568be4a 100644
--- a/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
@@ -643,11 +643,16 @@ int amdgpu_dpm_get_ecc_info(struct amdgpu_device *adev,
 			    void *umc_ecc)
 {
 	struct smu_context *smu = adev->powerplay.pp_handle;
+	int ret = 0;
 
 	if (!is_support_sw_smu(adev))
 		return -EOPNOTSUPP;
 
-	return smu_get_ecc_info(smu, umc_ecc);
+	mutex_lock(&adev->pm.mutex);
+	ret = smu_get_ecc_info(smu, umc_ecc);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 struct amd_vce_state *amdgpu_dpm_get_vce_clock_state(struct amdgpu_device *adev,