drm/amd/pm: drop unneeded lock protection smu->mutex

As all those APIs are already protected either by adev->pm.mutex
or smu->message_lock.
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h

@@ -488,7 +488,6 @@ struct smu_context
 	const struct cmn2asic_mapping	*table_map;
 	const struct cmn2asic_mapping	*pwr_src_map;
 	const struct cmn2asic_mapping	*workload_map;
-	struct mutex			mutex;
 	struct mutex			sensor_lock;
 	struct mutex			metrics_lock;
 	struct mutex			message_lock;

drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c

@@ -2118,9 +2118,9 @@ static int arcturus_i2c_xfer(struct i2c_adapter *i2c_adap,
 			}
 		}
 	}
-	mutex_lock(&smu->mutex);
+	mutex_lock(&adev->pm.mutex);
 	r = smu_cmn_update_table(smu, SMU_TABLE_I2C_COMMANDS, 0, req, true);
-	mutex_unlock(&smu->mutex);
+	mutex_unlock(&adev->pm.mutex);
 	if (r)
 		goto fail;
 

drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c

@@ -2826,9 +2826,9 @@ static int navi10_i2c_xfer(struct i2c_adapter *i2c_adap,
 			}
 		}
 	}
-	mutex_lock(&smu->mutex);
+	mutex_lock(&adev->pm.mutex);
 	r = smu_cmn_update_table(smu, SMU_TABLE_I2C_COMMANDS, 0, req, true);
-	mutex_unlock(&smu->mutex);
+	mutex_unlock(&adev->pm.mutex);
 	if (r)
 		goto fail;
 

drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c

@@ -3497,9 +3497,9 @@ static int sienna_cichlid_i2c_xfer(struct i2c_adapter *i2c_adap,
 			}
 		}
 	}
-	mutex_lock(&smu->mutex);
+	mutex_lock(&adev->pm.mutex);
 	r = smu_cmn_update_table(smu, SMU_TABLE_I2C_COMMANDS, 0, req, true);
-	mutex_unlock(&smu->mutex);
+	mutex_unlock(&adev->pm.mutex);
 	if (r)
 		goto fail;
 

drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c

@@ -1521,9 +1521,9 @@ static int aldebaran_i2c_xfer(struct i2c_adapter *i2c_adap,
 			}
 		}
 	}
-	mutex_lock(&smu->mutex);
+	mutex_lock(&adev->pm.mutex);
 	r = smu_cmn_update_table(smu, SMU_TABLE_I2C_COMMANDS, 0, req, true);
-	mutex_unlock(&smu->mutex);
+	mutex_unlock(&adev->pm.mutex);
 	if (r)
 		goto fail;