[PATCH V4 17/17] drm/amd/pm: unified lock protections in amdgpu_dpm.c

[Evan Quan <evan.quan@amd.com>]

As the only entry point, it's now safe and reasonable to
enforce the lock protections in amdgpu_dpm.c. And with
this, we can drop other internal used power locks.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Change-Id: Iad228cad0b3d8c41927def08965a52525f3f51d3
---
 drivers/gpu/drm/amd/pm/amdgpu_dpm.c        | 719 +++++++++++++++------
 drivers/gpu/drm/amd/pm/legacy-dpm/kv_dpm.c |  16 +-
 drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c |  16 +-
 3 files changed, 536 insertions(+), 215 deletions(-)

diff --git a/drivers/gpu/drm/amd/pm/amdgpu_dpm.c b/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
index b58a5749538d..97acabe6b046 100644
--- a/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
@@ -39,15 +39,33 @@
 int amdgpu_dpm_get_sclk(struct amdgpu_device *adev, bool low)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
+
+	if (!pp_funcs->get_sclk)
+		return 0;
 
-	return pp_funcs->get_sclk((adev)->powerplay.pp_handle, (low));
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->get_sclk((adev)->powerplay.pp_handle,
+				 low);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_get_mclk(struct amdgpu_device *adev, bool low)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
+
+	if (!pp_funcs->get_mclk)
+		return 0;
+
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->get_mclk((adev)->powerplay.pp_handle,
+				 low);
+	mutex_unlock(&adev->pm.mutex);
 
-	return pp_funcs->get_mclk((adev)->powerplay.pp_handle, (low));
+	return ret;
 }
 
 int amdgpu_dpm_set_powergating_by_smu(struct amdgpu_device *adev, uint32_t block_type, bool gate)
@@ -62,52 +80,20 @@ int amdgpu_dpm_set_powergating_by_smu(struct amdgpu_device *adev, uint32_t block
 		return 0;
 	}
 
+	mutex_lock(&adev->pm.mutex);
+
 	switch (block_type) {
 	case AMD_IP_BLOCK_TYPE_UVD:
 	case AMD_IP_BLOCK_TYPE_VCE:
-		if (pp_funcs && pp_funcs->set_powergating_by_smu) {
-			/*
-			 * TODO: need a better lock mechanism
-			 *
-			 * Here adev->pm.mutex lock protection is enforced on
-			 * UVD and VCE cases only. Since for other cases, there
-			 * may be already lock protection in amdgpu_pm.c.
-			 * This is a quick fix for the deadlock issue below.
-			 *     NFO: task ocltst:2028 blocked for more than 120 seconds.
-			 *     Tainted: G           OE     5.0.0-37-generic #40~18.04.1-Ubuntu
-			 *     echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
-			 *     cltst          D    0  2028   2026 0x00000000
-			 *     all Trace:
-			 *     __schedule+0x2c0/0x870
-			 *     schedule+0x2c/0x70
-			 *     schedule_preempt_disabled+0xe/0x10
-			 *     __mutex_lock.isra.9+0x26d/0x4e0
-			 *     __mutex_lock_slowpath+0x13/0x20
-			 *     ? __mutex_lock_slowpath+0x13/0x20
-			 *     mutex_lock+0x2f/0x40
-			 *     amdgpu_dpm_set_powergating_by_smu+0x64/0xe0 [amdgpu]
-			 *     gfx_v8_0_enable_gfx_static_mg_power_gating+0x3c/0x70 [amdgpu]
-			 *     gfx_v8_0_set_powergating_state+0x66/0x260 [amdgpu]
-			 *     amdgpu_device_ip_set_powergating_state+0x62/0xb0 [amdgpu]
-			 *     pp_dpm_force_performance_level+0xe7/0x100 [amdgpu]
-			 *     amdgpu_set_dpm_forced_performance_level+0x129/0x330 [amdgpu]
-			 */
-			mutex_lock(&adev->pm.mutex);
-			ret = (pp_funcs->set_powergating_by_smu(
-				(adev)->powerplay.pp_handle, block_type, gate));
-			mutex_unlock(&adev->pm.mutex);
-		}
-		break;
 	case AMD_IP_BLOCK_TYPE_GFX:
 	case AMD_IP_BLOCK_TYPE_VCN:
 	case AMD_IP_BLOCK_TYPE_SDMA:
 	case AMD_IP_BLOCK_TYPE_JPEG:
 	case AMD_IP_BLOCK_TYPE_GMC:
 	case AMD_IP_BLOCK_TYPE_ACP:
-		if (pp_funcs && pp_funcs->set_powergating_by_smu) {
+		if (pp_funcs && pp_funcs->set_powergating_by_smu)
 			ret = (pp_funcs->set_powergating_by_smu(
 				(adev)->powerplay.pp_handle, block_type, gate));
-		}
 		break;
 	default:
 		break;
@@ -116,6 +102,8 @@ int amdgpu_dpm_set_powergating_by_smu(struct amdgpu_device *adev, uint32_t block
 	if (!ret)
 		atomic_set(&adev->pm.pwr_state[block_type], pwr_state);
 
+	mutex_unlock(&adev->pm.mutex);
+
 	return ret;
 }
 
@@ -128,9 +116,13 @@ int amdgpu_dpm_baco_enter(struct amdgpu_device *adev)
 	if (!pp_funcs || !pp_funcs->set_asic_baco_state)
 		return -ENOENT;
 
+	mutex_lock(&adev->pm.mutex);
+
 	/* enter BACO state */
 	ret = pp_funcs->set_asic_baco_state(pp_handle, 1);
 
+	mutex_unlock(&adev->pm.mutex);
+
 	return ret;
 }
 
@@ -143,9 +135,13 @@ int amdgpu_dpm_baco_exit(struct amdgpu_device *adev)
 	if (!pp_funcs || !pp_funcs->set_asic_baco_state)
 		return -ENOENT;
 
+	mutex_lock(&adev->pm.mutex);
+
 	/* exit BACO state */
 	ret = pp_funcs->set_asic_baco_state(pp_handle, 0);
 
+	mutex_unlock(&adev->pm.mutex);
+
 	return ret;
 }
 
@@ -156,9 +152,13 @@ int amdgpu_dpm_set_mp1_state(struct amdgpu_device *adev,
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
 
 	if (pp_funcs && pp_funcs->set_mp1_state) {
+		mutex_lock(&adev->pm.mutex);
+
 		ret = pp_funcs->set_mp1_state(
 				adev->powerplay.pp_handle,
 				mp1_state);
+
+		mutex_unlock(&adev->pm.mutex);
 	}
 
 	return ret;
@@ -169,25 +169,37 @@ bool amdgpu_dpm_is_baco_supported(struct amdgpu_device *adev)
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
 	void *pp_handle = adev->powerplay.pp_handle;
 	bool baco_cap;
+	int ret = 0;
 
 	if (!pp_funcs || !pp_funcs->get_asic_baco_capability)
 		return false;
 
-	if (pp_funcs->get_asic_baco_capability(pp_handle, &baco_cap))
-		return false;
+	mutex_lock(&adev->pm.mutex);
+
+	ret = pp_funcs->get_asic_baco_capability(pp_handle,
+						 &baco_cap);
 
-	return baco_cap;
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret ? false : baco_cap;
 }
 
 int amdgpu_dpm_mode2_reset(struct amdgpu_device *adev)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
 	void *pp_handle = adev->powerplay.pp_handle;
+	int ret = 0;
 
 	if (!pp_funcs || !pp_funcs->asic_reset_mode_2)
 		return -ENOENT;
 
-	return pp_funcs->asic_reset_mode_2(pp_handle);
+	mutex_lock(&adev->pm.mutex);
+
+	ret = pp_funcs->asic_reset_mode_2(pp_handle);
+
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_baco_reset(struct amdgpu_device *adev)
@@ -199,37 +211,47 @@ int amdgpu_dpm_baco_reset(struct amdgpu_device *adev)
 	if (!pp_funcs || !pp_funcs->set_asic_baco_state)
 		return -ENOENT;
 
+	mutex_lock(&adev->pm.mutex);
+
 	/* enter BACO state */
 	ret = pp_funcs->set_asic_baco_state(pp_handle, 1);
 	if (ret)
-		return ret;
+		goto out;
 
 	/* exit BACO state */
 	ret = pp_funcs->set_asic_baco_state(pp_handle, 0);
-	if (ret)
-		return ret;
 
-	return 0;
+out:
+	mutex_unlock(&adev->pm.mutex);
+	return ret;
 }
 
 bool amdgpu_dpm_is_mode1_reset_supported(struct amdgpu_device *adev)
 {
 	struct smu_context *smu = adev->powerplay.pp_handle;
+	bool support_mode1_reset = false;
 
-	if (is_support_sw_smu(adev))
-		return smu_mode1_reset_is_support(smu);
+	if (is_support_sw_smu(adev)) {
+		mutex_lock(&adev->pm.mutex);
+		support_mode1_reset = smu_mode1_reset_is_support(smu);
+		mutex_unlock(&adev->pm.mutex);
+	}
 
-	return false;
+	return support_mode1_reset;
 }
 
 int amdgpu_dpm_mode1_reset(struct amdgpu_device *adev)
 {
 	struct smu_context *smu = adev->powerplay.pp_handle;
+	int ret = -EOPNOTSUPP;
 
-	if (is_support_sw_smu(adev))
-		return smu_mode1_reset(smu);
+	if (is_support_sw_smu(adev)) {
+		mutex_lock(&adev->pm.mutex);
+		ret = smu_mode1_reset(smu);
+		mutex_unlock(&adev->pm.mutex);
+	}
 
-	return -EOPNOTSUPP;
+	return ret;
 }
 
 int amdgpu_dpm_switch_power_profile(struct amdgpu_device *adev,
@@ -242,9 +264,12 @@ int amdgpu_dpm_switch_power_profile(struct amdgpu_device *adev,
 	if (amdgpu_sriov_vf(adev))
 		return 0;
 
-	if (pp_funcs && pp_funcs->switch_power_profile)
+	if (pp_funcs && pp_funcs->switch_power_profile) {
+		mutex_lock(&adev->pm.mutex);
 		ret = pp_funcs->switch_power_profile(
 			adev->powerplay.pp_handle, type, en);
+		mutex_unlock(&adev->pm.mutex);
+	}
 
 	return ret;
 }
@@ -255,9 +280,12 @@ int amdgpu_dpm_set_xgmi_pstate(struct amdgpu_device *adev,
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
 	int ret = 0;
 
-	if (pp_funcs && pp_funcs->set_xgmi_pstate)
+	if (pp_funcs && pp_funcs->set_xgmi_pstate) {
+		mutex_lock(&adev->pm.mutex);
 		ret = pp_funcs->set_xgmi_pstate(adev->powerplay.pp_handle,
 								pstate);
+		mutex_unlock(&adev->pm.mutex);
+	}
 
 	return ret;
 }
@@ -269,8 +297,11 @@ int amdgpu_dpm_set_df_cstate(struct amdgpu_device *adev,
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
 	void *pp_handle = adev->powerplay.pp_handle;
 
-	if (pp_funcs && pp_funcs->set_df_cstate)
+	if (pp_funcs && pp_funcs->set_df_cstate) {
+		mutex_lock(&adev->pm.mutex);
 		ret = pp_funcs->set_df_cstate(pp_handle, cstate);
+		mutex_unlock(&adev->pm.mutex);
+	}
 
 	return ret;
 }
@@ -278,11 +309,15 @@ int amdgpu_dpm_set_df_cstate(struct amdgpu_device *adev,
 int amdgpu_dpm_allow_xgmi_power_down(struct amdgpu_device *adev, bool en)
 {
 	struct smu_context *smu = adev->powerplay.pp_handle;
+	int ret = 0;
 
-	if (is_support_sw_smu(adev))
-		return smu_allow_xgmi_power_down(smu, en);
+	if (is_support_sw_smu(adev)) {
+		mutex_lock(&adev->pm.mutex);
+		ret = smu_allow_xgmi_power_down(smu, en);
+		mutex_unlock(&adev->pm.mutex);
+	}
 
-	return 0;
+	return ret;
 }
 
 int amdgpu_dpm_enable_mgpu_fan_boost(struct amdgpu_device *adev)
@@ -292,8 +327,11 @@ int amdgpu_dpm_enable_mgpu_fan_boost(struct amdgpu_device *adev)
 			adev->powerplay.pp_funcs;
 	int ret = 0;
 
-	if (pp_funcs && pp_funcs->enable_mgpu_fan_boost)
+	if (pp_funcs && pp_funcs->enable_mgpu_fan_boost) {
+		mutex_lock(&adev->pm.mutex);
 		ret = pp_funcs->enable_mgpu_fan_boost(pp_handle);
+		mutex_unlock(&adev->pm.mutex);
+	}
 
 	return ret;
 }
@@ -306,9 +344,12 @@ int amdgpu_dpm_set_clockgating_by_smu(struct amdgpu_device *adev,
 			adev->powerplay.pp_funcs;
 	int ret = 0;
 
-	if (pp_funcs && pp_funcs->set_clockgating_by_smu)
+	if (pp_funcs && pp_funcs->set_clockgating_by_smu) {
+		mutex_lock(&adev->pm.mutex);
 		ret = pp_funcs->set_clockgating_by_smu(pp_handle,
 						       msg_id);
+		mutex_unlock(&adev->pm.mutex);
+	}
 
 	return ret;
 }
@@ -321,9 +362,12 @@ int amdgpu_dpm_smu_i2c_bus_access(struct amdgpu_device *adev,
 			adev->powerplay.pp_funcs;
 	int ret = -EOPNOTSUPP;
 
-	if (pp_funcs && pp_funcs->smu_i2c_bus_access)
+	if (pp_funcs && pp_funcs->smu_i2c_bus_access) {
+		mutex_lock(&adev->pm.mutex);
 		ret = pp_funcs->smu_i2c_bus_access(pp_handle,
 						   acquire);
+		mutex_unlock(&adev->pm.mutex);
+	}
 
 	return ret;
 }
@@ -336,13 +380,15 @@ void amdgpu_pm_acpi_event_handler(struct amdgpu_device *adev)
 			adev->pm.ac_power = true;
 		else
 			adev->pm.ac_power = false;
+
 		if (adev->powerplay.pp_funcs &&
 		    adev->powerplay.pp_funcs->enable_bapm)
 			amdgpu_dpm_enable_bapm(adev, adev->pm.ac_power);
-		mutex_unlock(&adev->pm.mutex);
 
 		if (is_support_sw_smu(adev))
 			smu_set_ac_dc(adev->powerplay.pp_handle);
+
+		mutex_unlock(&adev->pm.mutex);
 	}
 }
 
@@ -350,16 +396,19 @@ int amdgpu_dpm_read_sensor(struct amdgpu_device *adev, enum amd_pp_sensors senso
 			   void *data, uint32_t *size)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
-	int ret = 0;
+	int ret = -EINVAL;
 
 	if (!data || !size)
 		return -EINVAL;
 
-	if (pp_funcs && pp_funcs->read_sensor)
-		ret = pp_funcs->read_sensor((adev)->powerplay.pp_handle,
-								    sensor, data, size);
-	else
-		ret = -EINVAL;
+	if (pp_funcs && pp_funcs->read_sensor) {
+		mutex_lock(&adev->pm.mutex);
+		ret = pp_funcs->read_sensor(adev->powerplay.pp_handle,
+					    sensor,
+					    data,
+					    size);
+		mutex_unlock(&adev->pm.mutex);
+	}
 
 	return ret;
 }
@@ -374,7 +423,9 @@ void amdgpu_dpm_compute_clocks(struct amdgpu_device *adev)
 	if (!pp_funcs->pm_compute_clocks)
 		return;
 
+	mutex_lock(&adev->pm.mutex);
 	pp_funcs->pm_compute_clocks(adev->powerplay.pp_handle);
+	mutex_unlock(&adev->pm.mutex);
 }
 
 void amdgpu_dpm_enable_uvd(struct amdgpu_device *adev, bool enable)
@@ -409,32 +460,51 @@ void amdgpu_dpm_enable_jpeg(struct amdgpu_device *adev, bool enable)
 
 int amdgpu_pm_load_smu_firmware(struct amdgpu_device *adev, uint32_t *smu_version)
 {
-	int r;
+	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int r = 0;
 
-	if (adev->powerplay.pp_funcs && adev->powerplay.pp_funcs->load_firmware) {
-		r = adev->powerplay.pp_funcs->load_firmware(adev->powerplay.pp_handle);
-		if (r) {
-			pr_err("smu firmware loading failed\n");
-			return r;
-		}
+	if (!pp_funcs->load_firmware)
+		return 0;
 
-		if (smu_version)
-			*smu_version = adev->pm.fw_version;
+	mutex_lock(&adev->pm.mutex);
+	r = pp_funcs->load_firmware(adev->powerplay.pp_handle);
+	if (r) {
+		pr_err("smu firmware loading failed\n");
+		goto out;
 	}
 
-	return 0;
+	if (smu_version)
+		*smu_version = adev->pm.fw_version;
+
+out:
+	mutex_unlock(&adev->pm.mutex);
+	return r;
 }
 
 int amdgpu_dpm_set_light_sbr(struct amdgpu_device *adev, bool enable)
 {
-	return smu_set_light_sbr(adev->powerplay.pp_handle, enable);
+	int ret = 0;
+
+	if (is_support_sw_smu(adev)) {
+		mutex_lock(&adev->pm.mutex);
+		ret = smu_set_light_sbr(adev->powerplay.pp_handle,
+					enable);
+		mutex_unlock(&adev->pm.mutex);
+	}
+
+	return ret;
 }
 
 int amdgpu_dpm_send_hbm_bad_pages_num(struct amdgpu_device *adev, uint32_t size)
 {
 	struct smu_context *smu = adev->powerplay.pp_handle;
+	int ret = 0;
 
-	return smu_send_hbm_bad_pages_num(smu, size);
+	mutex_lock(&adev->pm.mutex);
+	ret = smu_send_hbm_bad_pages_num(smu, size);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_get_dpm_freq_range(struct amdgpu_device *adev,
@@ -442,15 +512,22 @@ int amdgpu_dpm_get_dpm_freq_range(struct amdgpu_device *adev,
 				  uint32_t *min,
 				  uint32_t *max)
 {
+	int ret = 0;
+
+	if (type != PP_SCLK)
+		return -EINVAL;
+
 	if (!is_support_sw_smu(adev))
 		return -EOPNOTSUPP;
 
-	switch (type) {
-	case PP_SCLK:
-		return smu_get_dpm_freq_range(adev->powerplay.pp_handle, SMU_SCLK, min, max);
-	default:
-		return -EINVAL;
-	}
+	mutex_lock(&adev->pm.mutex);
+	ret = smu_get_dpm_freq_range(adev->powerplay.pp_handle,
+				     SMU_SCLK,
+				     min,
+				     max);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_set_soft_freq_range(struct amdgpu_device *adev,
@@ -459,26 +536,37 @@ int amdgpu_dpm_set_soft_freq_range(struct amdgpu_device *adev,
 				   uint32_t max)
 {
 	struct smu_context *smu = adev->powerplay.pp_handle;
+	int ret = 0;
+
+	if (type != PP_SCLK)
+		return -EINVAL;
 
 	if (!is_support_sw_smu(adev))
 		return -EOPNOTSUPP;
 
-	switch (type) {
-	case PP_SCLK:
-		return smu_set_soft_freq_range(smu, SMU_SCLK, min, max);
-	default:
-		return -EINVAL;
-	}
+	mutex_lock(&adev->pm.mutex);
+	ret = smu_set_soft_freq_range(smu,
+				      SMU_SCLK,
+				      min,
+				      max);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_write_watermarks_table(struct amdgpu_device *adev)
 {
 	struct smu_context *smu = adev->powerplay.pp_handle;
+	int ret = 0;
 
 	if (!is_support_sw_smu(adev))
 		return 0;
 
-	return smu_write_watermarks_table(smu);
+	mutex_lock(&adev->pm.mutex);
+	ret = smu_write_watermarks_table(smu);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_wait_for_event(struct amdgpu_device *adev,
@@ -486,27 +574,40 @@ int amdgpu_dpm_wait_for_event(struct amdgpu_device *adev,
 			      uint64_t event_arg)
 {
 	struct smu_context *smu = adev->powerplay.pp_handle;
+	int ret = 0;
 
 	if (!is_support_sw_smu(adev))
 		return -EOPNOTSUPP;
 
-	return smu_wait_for_event(smu, event, event_arg);
+	mutex_lock(&adev->pm.mutex);
+	ret = smu_wait_for_event(smu, event, event_arg);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_get_status_gfxoff(struct amdgpu_device *adev, uint32_t *value)
 {
 	struct smu_context *smu = adev->powerplay.pp_handle;
+	int ret = 0;
 
 	if (!is_support_sw_smu(adev))
 		return -EOPNOTSUPP;
 
-	return smu_get_status_gfxoff(smu, value);
+	mutex_lock(&adev->pm.mutex);
+	ret = smu_get_status_gfxoff(smu, value);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 uint64_t amdgpu_dpm_get_thermal_throttling_counter(struct amdgpu_device *adev)
 {
 	struct smu_context *smu = adev->powerplay.pp_handle;
 
+	if (!is_support_sw_smu(adev))
+		return 0;
+
 	return atomic64_read(&smu->throttle_int_counter);
 }
 
@@ -541,12 +642,17 @@ struct amd_vce_state *amdgpu_dpm_get_vce_clock_state(struct amdgpu_device *adev,
 						     uint32_t idx)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	struct amd_vce_state *vstate = NULL;
 
 	if (!pp_funcs->get_vce_clock_state)
 		return NULL;
 
-	return pp_funcs->get_vce_clock_state(adev->powerplay.pp_handle,
-					     idx);
+	mutex_lock(&adev->pm.mutex);
+	vstate = pp_funcs->get_vce_clock_state(adev->powerplay.pp_handle,
+					       idx);
+	mutex_unlock(&adev->pm.mutex);
+
+	return vstate;
 }
 
 void amdgpu_dpm_get_current_power_state(struct amdgpu_device *adev,
@@ -554,21 +660,28 @@ void amdgpu_dpm_get_current_power_state(struct amdgpu_device *adev,
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
 
+	mutex_lock(&adev->pm.mutex);
+
 	if (!pp_funcs->get_current_power_state) {
 		*state = adev->pm.dpm.user_state;
-		return;
+		goto out;
 	}
 
 	*state = pp_funcs->get_current_power_state(adev->powerplay.pp_handle);
 	if (*state < POWER_STATE_TYPE_DEFAULT ||
 	    *state > POWER_STATE_TYPE_INTERNAL_3DPERF)
 		*state = adev->pm.dpm.user_state;
+
+out:
+	mutex_unlock(&adev->pm.mutex);
 }
 
 void amdgpu_dpm_set_power_state(struct amdgpu_device *adev,
 				enum amd_pm_state_type state)
 {
+	mutex_lock(&adev->pm.mutex);
 	adev->pm.dpm.user_state = state;
+	mutex_unlock(&adev->pm.mutex);
 }
 
 enum amd_dpm_forced_level amdgpu_dpm_get_performance_level(struct amdgpu_device *adev)
@@ -576,10 +689,12 @@ enum amd_dpm_forced_level amdgpu_dpm_get_performance_level(struct amdgpu_device
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
 	enum amd_dpm_forced_level level;
 
+	mutex_lock(&adev->pm.mutex);
 	if (pp_funcs->get_performance_level)
 		level = pp_funcs->get_performance_level(adev->powerplay.pp_handle);
 	else
 		level = adev->pm.dpm.forced_level;
+	mutex_unlock(&adev->pm.mutex);
 
 	return level;
 }
@@ -588,30 +703,46 @@ int amdgpu_dpm_force_performance_level(struct amdgpu_device *adev,
 				       enum amd_dpm_forced_level level)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
-	if (pp_funcs->force_performance_level) {
-		if (adev->pm.dpm.thermal_active)
-			return -EINVAL;
+	mutex_lock(&adev->pm.mutex);
+
+	if (!pp_funcs->force_performance_level)
+		goto out;
 
-		if (pp_funcs->force_performance_level(adev->powerplay.pp_handle,
-						      level))
-			return -EINVAL;
+	if (adev->pm.dpm.thermal_active) {
+		ret = -EINVAL;
+		goto out;
 	}
 
-	adev->pm.dpm.forced_level = level;
+	if (pp_funcs->force_performance_level(adev->powerplay.pp_handle,
+					      level))
+		ret = -EINVAL;
 
-	return 0;
+out:
+	if (!ret)
+		adev->pm.dpm.forced_level = level;
+
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_get_pp_num_states(struct amdgpu_device *adev,
 				 struct pp_states_info *states)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->get_pp_num_states)
 		return -EOPNOTSUPP;
 
-	return pp_funcs->get_pp_num_states(adev->powerplay.pp_handle, states);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->get_pp_num_states(adev->powerplay.pp_handle,
+					  states);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_dispatch_task(struct amdgpu_device *adev,
@@ -619,21 +750,34 @@ int amdgpu_dpm_dispatch_task(struct amdgpu_device *adev,
 			      enum amd_pm_state_type *user_state)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->dispatch_tasks)
 		return -EOPNOTSUPP;
 
-	return pp_funcs->dispatch_tasks(adev->powerplay.pp_handle, task_id, user_state);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->dispatch_tasks(adev->powerplay.pp_handle,
+				       task_id,
+				       user_state);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_get_pp_table(struct amdgpu_device *adev, char **table)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->get_pp_table)
 		return 0;
 
-	return pp_funcs->get_pp_table(adev->powerplay.pp_handle, table);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->get_pp_table(adev->powerplay.pp_handle,
+				     table);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_set_fine_grain_clk_vol(struct amdgpu_device *adev,
@@ -642,14 +786,19 @@ int amdgpu_dpm_set_fine_grain_clk_vol(struct amdgpu_device *adev,
 				      uint32_t size)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->set_fine_grain_clk_vol)
 		return 0;
 
-	return pp_funcs->set_fine_grain_clk_vol(adev->powerplay.pp_handle,
-						type,
-						input,
-						size);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->set_fine_grain_clk_vol(adev->powerplay.pp_handle,
+					       type,
+					       input,
+					       size);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_odn_edit_dpm_table(struct amdgpu_device *adev,
@@ -658,14 +807,19 @@ int amdgpu_dpm_odn_edit_dpm_table(struct amdgpu_device *adev,
 				  uint32_t size)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->odn_edit_dpm_table)
 		return 0;
 
-	return pp_funcs->odn_edit_dpm_table(adev->powerplay.pp_handle,
-					    type,
-					    input,
-					    size);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->odn_edit_dpm_table(adev->powerplay.pp_handle,
+					   type,
+					   input,
+					   size);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_print_clock_levels(struct amdgpu_device *adev,
@@ -673,36 +827,51 @@ int amdgpu_dpm_print_clock_levels(struct amdgpu_device *adev,
 				  char *buf)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->print_clock_levels)
 		return 0;
 
-	return pp_funcs->print_clock_levels(adev->powerplay.pp_handle,
-					    type,
-					    buf);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->print_clock_levels(adev->powerplay.pp_handle,
+					   type,
+					   buf);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_set_ppfeature_status(struct amdgpu_device *adev,
 				    uint64_t ppfeature_masks)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->set_ppfeature_status)
 		return 0;
 
-	return pp_funcs->set_ppfeature_status(adev->powerplay.pp_handle,
-					      ppfeature_masks);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->set_ppfeature_status(adev->powerplay.pp_handle,
+					     ppfeature_masks);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_get_ppfeature_status(struct amdgpu_device *adev, char *buf)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->get_ppfeature_status)
 		return 0;
 
-	return pp_funcs->get_ppfeature_status(adev->powerplay.pp_handle,
-					      buf);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->get_ppfeature_status(adev->powerplay.pp_handle,
+					     buf);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_force_clock_level(struct amdgpu_device *adev,
@@ -710,88 +879,131 @@ int amdgpu_dpm_force_clock_level(struct amdgpu_device *adev,
 				 uint32_t mask)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->force_clock_level)
 		return 0;
 
-	return pp_funcs->force_clock_level(adev->powerplay.pp_handle,
-					   type,
-					   mask);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->force_clock_level(adev->powerplay.pp_handle,
+					  type,
+					  mask);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_get_sclk_od(struct amdgpu_device *adev)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->get_sclk_od)
 		return 0;
 
-	return pp_funcs->get_sclk_od(adev->powerplay.pp_handle);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->get_sclk_od(adev->powerplay.pp_handle);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_set_sclk_od(struct amdgpu_device *adev, uint32_t value)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->set_sclk_od)
 		return -EOPNOTSUPP;
 
-	return pp_funcs->set_sclk_od(adev->powerplay.pp_handle, value);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->set_sclk_od(adev->powerplay.pp_handle,
+				    value);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_get_mclk_od(struct amdgpu_device *adev)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->get_mclk_od)
 		return 0;
 
-	return pp_funcs->get_mclk_od(adev->powerplay.pp_handle);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->get_mclk_od(adev->powerplay.pp_handle);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_set_mclk_od(struct amdgpu_device *adev, uint32_t value)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->set_mclk_od)
 		return -EOPNOTSUPP;
 
-	return pp_funcs->set_mclk_od(adev->powerplay.pp_handle, value);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->set_mclk_od(adev->powerplay.pp_handle,
+				    value);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_get_power_profile_mode(struct amdgpu_device *adev,
 				      char *buf)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->get_power_profile_mode)
 		return -EOPNOTSUPP;
 
-	return pp_funcs->get_power_profile_mode(adev->powerplay.pp_handle,
-						buf);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->get_power_profile_mode(adev->powerplay.pp_handle,
+					       buf);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_set_power_profile_mode(struct amdgpu_device *adev,
 				      long *input, uint32_t size)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->set_power_profile_mode)
 		return 0;
 
-	return pp_funcs->set_power_profile_mode(adev->powerplay.pp_handle,
-						input,
-						size);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->set_power_profile_mode(adev->powerplay.pp_handle,
+					       input,
+					       size);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_get_gpu_metrics(struct amdgpu_device *adev, void **table)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->get_gpu_metrics)
 		return 0;
 
-	return pp_funcs->get_gpu_metrics(adev->powerplay.pp_handle, table);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->get_gpu_metrics(adev->powerplay.pp_handle,
+					table);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_get_fan_control_mode(struct amdgpu_device *adev,
@@ -802,7 +1014,9 @@ int amdgpu_dpm_get_fan_control_mode(struct amdgpu_device *adev,
 	if (!pp_funcs->get_fan_control_mode)
 		return -EOPNOTSUPP;
 
+	mutex_lock(&adev->pm.mutex);
 	*fan_mode = pp_funcs->get_fan_control_mode(adev->powerplay.pp_handle);
+	mutex_unlock(&adev->pm.mutex);
 
 	return 0;
 }
@@ -811,44 +1025,68 @@ int amdgpu_dpm_set_fan_speed_pwm(struct amdgpu_device *adev,
 				 uint32_t speed)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->set_fan_speed_pwm)
 		return -EINVAL;
 
-	return pp_funcs->set_fan_speed_pwm(adev->powerplay.pp_handle, speed);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->set_fan_speed_pwm(adev->powerplay.pp_handle,
+					  speed);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_get_fan_speed_pwm(struct amdgpu_device *adev,
 				 uint32_t *speed)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->get_fan_speed_pwm)
 		return -EINVAL;
 
-	return pp_funcs->get_fan_speed_pwm(adev->powerplay.pp_handle, speed);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->get_fan_speed_pwm(adev->powerplay.pp_handle,
+					  speed);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_get_fan_speed_rpm(struct amdgpu_device *adev,
 				 uint32_t *speed)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->get_fan_speed_rpm)
 		return -EINVAL;
 
-	return pp_funcs->get_fan_speed_rpm(adev->powerplay.pp_handle, speed);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->get_fan_speed_rpm(adev->powerplay.pp_handle,
+					  speed);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_set_fan_speed_rpm(struct amdgpu_device *adev,
 				 uint32_t speed)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->set_fan_speed_rpm)
 		return -EINVAL;
 
-	return pp_funcs->set_fan_speed_rpm(adev->powerplay.pp_handle, speed);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->set_fan_speed_rpm(adev->powerplay.pp_handle,
+					  speed);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_set_fan_control_mode(struct amdgpu_device *adev,
@@ -859,7 +1097,10 @@ int amdgpu_dpm_set_fan_control_mode(struct amdgpu_device *adev,
 	if (!pp_funcs->set_fan_control_mode)
 		return -EOPNOTSUPP;
 
-	pp_funcs->set_fan_control_mode(adev->powerplay.pp_handle, mode);
+	mutex_lock(&adev->pm.mutex);
+	pp_funcs->set_fan_control_mode(adev->powerplay.pp_handle,
+				       mode);
+	mutex_unlock(&adev->pm.mutex);
 
 	return 0;
 }
@@ -870,33 +1111,50 @@ int amdgpu_dpm_get_power_limit(struct amdgpu_device *adev,
 			       enum pp_power_type power_type)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->get_power_limit)
 		return -ENODATA;
 
-	return pp_funcs->get_power_limit(adev->powerplay.pp_handle,
-					 limit,
-					 pp_limit_level,
-					 power_type);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->get_power_limit(adev->powerplay.pp_handle,
+					limit,
+					pp_limit_level,
+					power_type);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_set_power_limit(struct amdgpu_device *adev,
 			       uint32_t limit)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->set_power_limit)
 		return -EINVAL;
 
-	return pp_funcs->set_power_limit(adev->powerplay.pp_handle, limit);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->set_power_limit(adev->powerplay.pp_handle,
+					limit);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_is_cclk_dpm_supported(struct amdgpu_device *adev)
 {
+	bool cclk_dpm_supported = false;
+
 	if (!is_support_sw_smu(adev))
 		return false;
 
-	return is_support_cclk_dpm(adev);
+	mutex_lock(&adev->pm.mutex);
+	cclk_dpm_supported = is_support_cclk_dpm(adev);
+	mutex_unlock(&adev->pm.mutex);
+
+	return (int)cclk_dpm_supported;
 }
 
 int amdgpu_dpm_debugfs_print_current_performance_level(struct amdgpu_device *adev,
@@ -907,8 +1165,10 @@ int amdgpu_dpm_debugfs_print_current_performance_level(struct amdgpu_device *ade
 	if (!pp_funcs->debugfs_print_current_performance_level)
 		return -EOPNOTSUPP;
 
+	mutex_lock(&adev->pm.mutex);
 	pp_funcs->debugfs_print_current_performance_level(adev->powerplay.pp_handle,
 							  m);
+	mutex_unlock(&adev->pm.mutex);
 
 	return 0;
 }
@@ -918,13 +1178,18 @@ int amdgpu_dpm_get_smu_prv_buf_details(struct amdgpu_device *adev,
 				       size_t *size)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->get_smu_prv_buf_details)
 		return -ENOSYS;
 
-	return pp_funcs->get_smu_prv_buf_details(adev->powerplay.pp_handle,
-						 addr,
-						 size);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->get_smu_prv_buf_details(adev->powerplay.pp_handle,
+						addr,
+						size);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_is_overdrive_supported(struct amdgpu_device *adev)
@@ -945,19 +1210,27 @@ int amdgpu_dpm_set_pp_table(struct amdgpu_device *adev,
 			    size_t size)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->set_pp_table)
 		return -EOPNOTSUPP;
 
-	return pp_funcs->set_pp_table(adev->powerplay.pp_handle,
-				      buf,
-				      size);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->set_pp_table(adev->powerplay.pp_handle,
+				     buf,
+				     size);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_get_num_cpu_cores(struct amdgpu_device *adev)
 {
 	struct smu_context *smu = adev->powerplay.pp_handle;
 
+	if (!is_support_sw_smu(adev))
+		return INT_MAX;
+
 	return smu->cpu_core_num;
 }
 
@@ -973,12 +1246,17 @@ int amdgpu_dpm_display_configuration_change(struct amdgpu_device *adev,
 					    const struct amd_pp_display_configuration *input)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->display_configuration_change)
 		return 0;
 
-	return pp_funcs->display_configuration_change(adev->powerplay.pp_handle,
-						      input);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->display_configuration_change(adev->powerplay.pp_handle,
+						     input);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_get_clock_by_type(struct amdgpu_device *adev,
@@ -986,25 +1264,35 @@ int amdgpu_dpm_get_clock_by_type(struct amdgpu_device *adev,
 				 struct amd_pp_clocks *clocks)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->get_clock_by_type)
 		return 0;
 
-	return pp_funcs->get_clock_by_type(adev->powerplay.pp_handle,
-					   type,
-					   clocks);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->get_clock_by_type(adev->powerplay.pp_handle,
+					  type,
+					  clocks);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_get_display_mode_validation_clks(struct amdgpu_device *adev,
 						struct amd_pp_simple_clock_info *clocks)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->get_display_mode_validation_clocks)
 		return 0;
 
-	return pp_funcs->get_display_mode_validation_clocks(adev->powerplay.pp_handle,
-							    clocks);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->get_display_mode_validation_clocks(adev->powerplay.pp_handle,
+							   clocks);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_get_clock_by_type_with_latency(struct amdgpu_device *adev,
@@ -1012,13 +1300,18 @@ int amdgpu_dpm_get_clock_by_type_with_latency(struct amdgpu_device *adev,
 					      struct pp_clock_levels_with_latency *clocks)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->get_clock_by_type_with_latency)
 		return 0;
 
-	return pp_funcs->get_clock_by_type_with_latency(adev->powerplay.pp_handle,
-							type,
-							clocks);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->get_clock_by_type_with_latency(adev->powerplay.pp_handle,
+						       type,
+						       clocks);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_get_clock_by_type_with_voltage(struct amdgpu_device *adev,
@@ -1026,49 +1319,69 @@ int amdgpu_dpm_get_clock_by_type_with_voltage(struct amdgpu_device *adev,
 					      struct pp_clock_levels_with_voltage *clocks)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->get_clock_by_type_with_voltage)
 		return 0;
 
-	return pp_funcs->get_clock_by_type_with_voltage(adev->powerplay.pp_handle,
-							type,
-							clocks);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->get_clock_by_type_with_voltage(adev->powerplay.pp_handle,
+						       type,
+						       clocks);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_set_watermarks_for_clocks_ranges(struct amdgpu_device *adev,
 					       void *clock_ranges)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->set_watermarks_for_clocks_ranges)
 		return -EOPNOTSUPP;
 
-	return pp_funcs->set_watermarks_for_clocks_ranges(adev->powerplay.pp_handle,
-							  clock_ranges);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->set_watermarks_for_clocks_ranges(adev->powerplay.pp_handle,
+							 clock_ranges);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_display_clock_voltage_request(struct amdgpu_device *adev,
 					     struct pp_display_clock_request *clock)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->display_clock_voltage_request)
 		return -EOPNOTSUPP;
 
-	return pp_funcs->display_clock_voltage_request(adev->powerplay.pp_handle,
-						       clock);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->display_clock_voltage_request(adev->powerplay.pp_handle,
+						      clock);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_get_current_clocks(struct amdgpu_device *adev,
 				  struct amd_pp_clock_info *clocks)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->get_current_clocks)
 		return -EOPNOTSUPP;
 
-	return pp_funcs->get_current_clocks(adev->powerplay.pp_handle,
-					    clocks);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->get_current_clocks(adev->powerplay.pp_handle,
+					   clocks);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 void amdgpu_dpm_notify_smu_enable_pwe(struct amdgpu_device *adev)
@@ -1078,31 +1391,43 @@ void amdgpu_dpm_notify_smu_enable_pwe(struct amdgpu_device *adev)
 	if (!pp_funcs->notify_smu_enable_pwe)
 		return;
 
+	mutex_lock(&adev->pm.mutex);
 	pp_funcs->notify_smu_enable_pwe(adev->powerplay.pp_handle);
+	mutex_unlock(&adev->pm.mutex);
 }
 
 int amdgpu_dpm_set_active_display_count(struct amdgpu_device *adev,
 					uint32_t count)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->set_active_display_count)
 		return -EOPNOTSUPP;
 
-	return pp_funcs->set_active_display_count(adev->powerplay.pp_handle,
-						  count);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->set_active_display_count(adev->powerplay.pp_handle,
+						 count);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_set_min_deep_sleep_dcefclk(struct amdgpu_device *adev,
 					  uint32_t clock)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->set_min_deep_sleep_dcefclk)
 		return -EOPNOTSUPP;
 
-	return pp_funcs->set_min_deep_sleep_dcefclk(adev->powerplay.pp_handle,
-						    clock);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->set_min_deep_sleep_dcefclk(adev->powerplay.pp_handle,
+						   clock);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 void amdgpu_dpm_set_hard_min_dcefclk_by_freq(struct amdgpu_device *adev,
@@ -1113,8 +1438,10 @@ void amdgpu_dpm_set_hard_min_dcefclk_by_freq(struct amdgpu_device *adev,
 	if (!pp_funcs->set_hard_min_dcefclk_by_freq)
 		return;
 
+	mutex_lock(&adev->pm.mutex);
 	pp_funcs->set_hard_min_dcefclk_by_freq(adev->powerplay.pp_handle,
 					       clock);
+	mutex_unlock(&adev->pm.mutex);
 }
 
 void amdgpu_dpm_set_hard_min_fclk_by_freq(struct amdgpu_device *adev,
@@ -1125,32 +1452,44 @@ void amdgpu_dpm_set_hard_min_fclk_by_freq(struct amdgpu_device *adev,
 	if (!pp_funcs->set_hard_min_fclk_by_freq)
 		return;
 
+	mutex_lock(&adev->pm.mutex);
 	pp_funcs->set_hard_min_fclk_by_freq(adev->powerplay.pp_handle,
 					    clock);
+	mutex_unlock(&adev->pm.mutex);
 }
 
 int amdgpu_dpm_display_disable_memory_clock_switch(struct amdgpu_device *adev,
 						   bool disable_memory_clock_switch)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->display_disable_memory_clock_switch)
 		return 0;
 
-	return pp_funcs->display_disable_memory_clock_switch(adev->powerplay.pp_handle,
-							     disable_memory_clock_switch);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->display_disable_memory_clock_switch(adev->powerplay.pp_handle,
+							    disable_memory_clock_switch);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_get_max_sustainable_clocks_by_dc(struct amdgpu_device *adev,
 						struct pp_smu_nv_clock_table *max_clocks)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->get_max_sustainable_clocks_by_dc)
 		return -EOPNOTSUPP;
 
-	return pp_funcs->get_max_sustainable_clocks_by_dc(adev->powerplay.pp_handle,
-							  max_clocks);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->get_max_sustainable_clocks_by_dc(adev->powerplay.pp_handle,
+							 max_clocks);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 enum pp_smu_status amdgpu_dpm_get_uclk_dpm_states(struct amdgpu_device *adev,
@@ -1158,23 +1497,33 @@ enum pp_smu_status amdgpu_dpm_get_uclk_dpm_states(struct amdgpu_device *adev,
 						  unsigned int *num_states)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->get_uclk_dpm_states)
 		return -EOPNOTSUPP;
 
-	return pp_funcs->get_uclk_dpm_states(adev->powerplay.pp_handle,
-					     clock_values_in_khz,
-					     num_states);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->get_uclk_dpm_states(adev->powerplay.pp_handle,
+					    clock_values_in_khz,
+					    num_states);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
 
 int amdgpu_dpm_get_dpm_clock_table(struct amdgpu_device *adev,
 				   struct dpm_clocks *clock_table)
 {
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
 
 	if (!pp_funcs->get_dpm_clock_table)
 		return -EOPNOTSUPP;
 
-	return pp_funcs->get_dpm_clock_table(adev->powerplay.pp_handle,
-					     clock_table);
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->get_dpm_clock_table(adev->powerplay.pp_handle,
+					    clock_table);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
 }
diff --git a/drivers/gpu/drm/amd/pm/legacy-dpm/kv_dpm.c b/drivers/gpu/drm/amd/pm/legacy-dpm/kv_dpm.c
index 72824ef61edd..b37662c4a413 100644
--- a/drivers/gpu/drm/amd/pm/legacy-dpm/kv_dpm.c
+++ b/drivers/gpu/drm/amd/pm/legacy-dpm/kv_dpm.c
@@ -3040,21 +3040,18 @@ static int kv_dpm_sw_init(void *handle)
 		return 0;
 
 	INIT_WORK(&adev->pm.dpm.thermal.work, amdgpu_dpm_thermal_work_handler);
-	mutex_lock(&adev->pm.mutex);
 	ret = kv_dpm_init(adev);
 	if (ret)
 		goto dpm_failed;
 	adev->pm.dpm.current_ps = adev->pm.dpm.requested_ps = adev->pm.dpm.boot_ps;
 	if (amdgpu_dpm == 1)
 		amdgpu_pm_print_power_states(adev);
-	mutex_unlock(&adev->pm.mutex);
 	DRM_INFO("amdgpu: dpm initialized\n");
 
 	return 0;
 
 dpm_failed:
 	kv_dpm_fini(adev);
-	mutex_unlock(&adev->pm.mutex);
 	DRM_ERROR("amdgpu: dpm initialization failed\n");
 	return ret;
 }
@@ -3065,9 +3062,7 @@ static int kv_dpm_sw_fini(void *handle)
 
 	flush_work(&adev->pm.dpm.thermal.work);
 
-	mutex_lock(&adev->pm.mutex);
 	kv_dpm_fini(adev);
-	mutex_unlock(&adev->pm.mutex);
 
 	return 0;
 }
@@ -3080,14 +3075,12 @@ static int kv_dpm_hw_init(void *handle)
 	if (!amdgpu_dpm)
 		return 0;
 
-	mutex_lock(&adev->pm.mutex);
 	kv_dpm_setup_asic(adev);
 	ret = kv_dpm_enable(adev);
 	if (ret)
 		adev->pm.dpm_enabled = false;
 	else
 		adev->pm.dpm_enabled = true;
-	mutex_unlock(&adev->pm.mutex);
 	amdgpu_legacy_dpm_compute_clocks(adev);
 	return ret;
 }
@@ -3096,11 +3089,8 @@ static int kv_dpm_hw_fini(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
-	if (adev->pm.dpm_enabled) {
-		mutex_lock(&adev->pm.mutex);
+	if (adev->pm.dpm_enabled)
 		kv_dpm_disable(adev);
-		mutex_unlock(&adev->pm.mutex);
-	}
 
 	return 0;
 }
@@ -3110,12 +3100,10 @@ static int kv_dpm_suspend(void *handle)
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
 	if (adev->pm.dpm_enabled) {
-		mutex_lock(&adev->pm.mutex);
 		/* disable dpm */
 		kv_dpm_disable(adev);
 		/* reset the power state */
 		adev->pm.dpm.current_ps = adev->pm.dpm.requested_ps = adev->pm.dpm.boot_ps;
-		mutex_unlock(&adev->pm.mutex);
 	}
 	return 0;
 }
@@ -3127,14 +3115,12 @@ static int kv_dpm_resume(void *handle)
 
 	if (adev->pm.dpm_enabled) {
 		/* asic init will reset to the boot state */
-		mutex_lock(&adev->pm.mutex);
 		kv_dpm_setup_asic(adev);
 		ret = kv_dpm_enable(adev);
 		if (ret)
 			adev->pm.dpm_enabled = false;
 		else
 			adev->pm.dpm_enabled = true;
-		mutex_unlock(&adev->pm.mutex);
 		if (adev->pm.dpm_enabled)
 			amdgpu_legacy_dpm_compute_clocks(adev);
 	}
diff --git a/drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c b/drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c
index e3b58249c6f4..22cf5f978f68 100644
--- a/drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c
+++ b/drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c
@@ -7786,21 +7786,18 @@ static int si_dpm_sw_init(void *handle)
 		return ret;
 
 	INIT_WORK(&adev->pm.dpm.thermal.work, amdgpu_dpm_thermal_work_handler);
-	mutex_lock(&adev->pm.mutex);
 	ret = si_dpm_init(adev);
 	if (ret)
 		goto dpm_failed;
 	adev->pm.dpm.current_ps = adev->pm.dpm.requested_ps = adev->pm.dpm.boot_ps;
 	if (amdgpu_dpm == 1)
 		amdgpu_pm_print_power_states(adev);
-	mutex_unlock(&adev->pm.mutex);
 	DRM_INFO("amdgpu: dpm initialized\n");
 
 	return 0;
 
 dpm_failed:
 	si_dpm_fini(adev);
-	mutex_unlock(&adev->pm.mutex);
 	DRM_ERROR("amdgpu: dpm initialization failed\n");
 	return ret;
 }
@@ -7811,9 +7808,7 @@ static int si_dpm_sw_fini(void *handle)
 
 	flush_work(&adev->pm.dpm.thermal.work);
 
-	mutex_lock(&adev->pm.mutex);
 	si_dpm_fini(adev);
-	mutex_unlock(&adev->pm.mutex);
 
 	return 0;
 }
@@ -7827,14 +7822,12 @@ static int si_dpm_hw_init(void *handle)
 	if (!amdgpu_dpm)
 		return 0;
 
-	mutex_lock(&adev->pm.mutex);
 	si_dpm_setup_asic(adev);
 	ret = si_dpm_enable(adev);
 	if (ret)
 		adev->pm.dpm_enabled = false;
 	else
 		adev->pm.dpm_enabled = true;
-	mutex_unlock(&adev->pm.mutex);
 	amdgpu_legacy_dpm_compute_clocks(adev);
 	return ret;
 }
@@ -7843,11 +7836,8 @@ static int si_dpm_hw_fini(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
-	if (adev->pm.dpm_enabled) {
-		mutex_lock(&adev->pm.mutex);
+	if (adev->pm.dpm_enabled)
 		si_dpm_disable(adev);
-		mutex_unlock(&adev->pm.mutex);
-	}
 
 	return 0;
 }
@@ -7857,12 +7847,10 @@ static int si_dpm_suspend(void *handle)
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
 	if (adev->pm.dpm_enabled) {
-		mutex_lock(&adev->pm.mutex);
 		/* disable dpm */
 		si_dpm_disable(adev);
 		/* reset the power state */
 		adev->pm.dpm.current_ps = adev->pm.dpm.requested_ps = adev->pm.dpm.boot_ps;
-		mutex_unlock(&adev->pm.mutex);
 	}
 	return 0;
 }
@@ -7874,14 +7862,12 @@ static int si_dpm_resume(void *handle)
 
 	if (adev->pm.dpm_enabled) {
 		/* asic init will reset to the boot state */
-		mutex_lock(&adev->pm.mutex);
 		si_dpm_setup_asic(adev);
 		ret = si_dpm_enable(adev);
 		if (ret)
 			adev->pm.dpm_enabled = false;
 		else
 			adev->pm.dpm_enabled = true;
-		mutex_unlock(&adev->pm.mutex);
 		if (adev->pm.dpm_enabled)
 			amdgpu_legacy_dpm_compute_clocks(adev);
 	}
-- 
2.29.0