drm/radeon/dpm/ni: properly catch errors in dpm setup

We weren't properly catching errors in dpm_enable()
and dpm_set_power_state().
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/radeon/ni_dpm.c

@@ -3517,6 +3517,7 @@ int ni_dpm_enable(struct radeon_device *rdev)
 	struct rv7xx_power_info *pi = rv770_get_pi(rdev);
 	struct evergreen_power_info *eg_pi = evergreen_get_pi(rdev);
 	struct radeon_ps *boot_ps = rdev->pm.dpm.boot_ps;
+	int ret;
 
 	if (pi->gfx_clock_gating)
 		ni_cg_clockgating_default(rdev);
@@ -3528,10 +3529,15 @@ int ni_dpm_enable(struct radeon_device *rdev)
 		ni_ls_clockgating_default(rdev);
 	if (pi->voltage_control) {
 		rv770_enable_voltage_control(rdev, true);
-		cypress_construct_voltage_tables(rdev);
+		ret = cypress_construct_voltage_tables(rdev);
+		if (ret)
+			return ret;
+	}
+	if (eg_pi->dynamic_ac_timing) {
+		ret = ni_initialize_mc_reg_table(rdev);
+		if (ret)
+			eg_pi->dynamic_ac_timing = false;
 	}
-	if (eg_pi->dynamic_ac_timing)
-		ni_initialize_mc_reg_table(rdev);
 	if (pi->dynamic_ss)
 		cypress_enable_spread_spectrum(rdev, true);
 	if (pi->thermal_protection)
@@ -3545,21 +3551,43 @@ int ni_dpm_enable(struct radeon_device *rdev)
 	rv770_program_vc(rdev);
 	if (pi->dynamic_pcie_gen2)
 		ni_enable_dynamic_pcie_gen2(rdev, true);
-	if (rv770_upload_firmware(rdev))
-		return -EINVAL;
-	ni_process_firmware_header(rdev);
-	ni_initial_switch_from_arb_f0_to_f1(rdev);
-	ni_init_smc_table(rdev);
-	ni_init_smc_spll_table(rdev);
-	ni_init_arb_table_index(rdev);
-	if (eg_pi->dynamic_ac_timing)
-		ni_populate_mc_reg_table(rdev, boot_ps);
-	ni_initialize_smc_cac_tables(rdev);
-	ni_initialize_hardware_cac_manager(rdev);
-	ni_populate_smc_tdp_limits(rdev, boot_ps);
+	ret = rv770_upload_firmware(rdev);
+	if (ret)
+		return ret;
+	ret = ni_process_firmware_header(rdev);
+	if (ret)
+		return ret;
+	ret = ni_initial_switch_from_arb_f0_to_f1(rdev);
+	if (ret)
+		return ret;
+	ret = ni_init_smc_table(rdev);
+	if (ret)
+		return ret;
+	ret = ni_init_smc_spll_table(rdev);
+	if (ret)
+		return ret;
+	ret = ni_init_arb_table_index(rdev);
+	if (ret)
+		return ret;
+	if (eg_pi->dynamic_ac_timing) {
+		ret = ni_populate_mc_reg_table(rdev, boot_ps);
+		if (ret)
+			return ret;
+	}
+	ret = ni_initialize_smc_cac_tables(rdev);
+	if (ret)
+		return ret;
+	ret = ni_initialize_hardware_cac_manager(rdev);
+	if (ret)
+		return ret;
+	ret = ni_populate_smc_tdp_limits(rdev, boot_ps);
+	if (ret)
+		return ret;
 	ni_program_response_times(rdev);
 	r7xx_start_smc(rdev);
-	cypress_notify_smc_display_change(rdev, false);
+	ret = cypress_notify_smc_display_change(rdev, false);
+	if (ret)
+		return ret;
 	cypress_enable_sclk_control(rdev, true);
 	if (eg_pi->memory_transition)
 		cypress_enable_mclk_control(rdev, true);
@@ -3575,7 +3603,9 @@ int ni_dpm_enable(struct radeon_device *rdev)
 	    r600_is_internal_thermal_sensor(rdev->pm.int_thermal_type)) {
 		PPSMC_Result result;
 
-		rv770_set_thermal_temperature_range(rdev, R600_TEMP_RANGE_MIN, 0xff * 1000);
+		ret = rv770_set_thermal_temperature_range(rdev, R600_TEMP_RANGE_MIN, 0xff * 1000);
+		if (ret)
+			return ret;
 		rdev->irq.dpm_thermal = true;
 		radeon_irq_set(rdev);
 		result = rv770_send_msg_to_smc(rdev, PPSMC_MSG_EnableThermalInterrupt);
@@ -3632,11 +3662,20 @@ void ni_dpm_disable(struct radeon_device *rdev)
 int ni_power_control_set_level(struct radeon_device *rdev)
 {
 	struct radeon_ps *new_ps = rdev->pm.dpm.requested_ps;
+	int ret;
 
-	ni_restrict_performance_levels_before_switch(rdev);
-	rv770_halt_smc(rdev);
-	ni_populate_smc_tdp_limits(rdev, new_ps);
-	rv770_resume_smc(rdev);
+	ret = ni_restrict_performance_levels_before_switch(rdev);
+	if (ret)
+		return ret;
+	ret = rv770_halt_smc(rdev);
+	if (ret)
+		return ret;
+	ret = ni_populate_smc_tdp_limits(rdev, new_ps);
+	if (ret)
+		return ret;
+	ret = rv770_resume_smc(rdev);
+	if (ret)
+		return ret;
 	rv770_set_sw_state(rdev);
 
 	return 0;
@@ -3662,29 +3701,54 @@ int ni_dpm_set_power_state(struct radeon_device *rdev)
 	struct radeon_ps *old_ps = &eg_pi->current_rps;
 	int ret;
 
-	ni_restrict_performance_levels_before_switch(rdev);
+	ret = ni_restrict_performance_levels_before_switch(rdev);
+	if (ret)
+		return ret;
 	rv770_set_uvd_clock_before_set_eng_clock(rdev, new_ps, old_ps);
-	ni_enable_power_containment(rdev, new_ps, false);
-	ni_enable_smc_cac(rdev, new_ps, false);
-	rv770_halt_smc(rdev);
+	ret = ni_enable_power_containment(rdev, new_ps, false);
+	if (ret)
+		return ret;
+	ret = ni_enable_smc_cac(rdev, new_ps, false);
+	if (ret)
+		return ret;
+	ret = rv770_halt_smc(rdev);
+	if (ret)
+		return ret;
 	if (eg_pi->smu_uvd_hs)
 		btc_notify_uvd_to_smc(rdev, new_ps);
-	ni_upload_sw_state(rdev, new_ps);
-	if (eg_pi->dynamic_ac_timing)
-		ni_upload_mc_reg_table(rdev, new_ps);
+	ret = ni_upload_sw_state(rdev, new_ps);
+	if (ret)
+		return ret;
+	if (eg_pi->dynamic_ac_timing) {
+		ret = ni_upload_mc_reg_table(rdev, new_ps);
+		if (ret)
+			return ret;
+	}
 	ret = ni_program_memory_timing_parameters(rdev, new_ps);
 	if (ret)
 		return ret;
-	ni_populate_smc_tdp_limits(rdev, new_ps);
-	rv770_resume_smc(rdev);
-	rv770_set_sw_state(rdev);
+	ret = ni_populate_smc_tdp_limits(rdev, new_ps);
+	if (ret)
+		return ret;
+	ret = rv770_resume_smc(rdev);
+	if (ret)
+		return ret;
+	ret = rv770_set_sw_state(rdev);
+	if (ret)
+		return ret;
 	rv770_set_uvd_clock_after_set_eng_clock(rdev, new_ps, old_ps);
-	ni_enable_smc_cac(rdev, new_ps, true);
-	ni_enable_power_containment(rdev, new_ps, true);
+	ret = ni_enable_smc_cac(rdev, new_ps, true);
+	if (ret)
+		return ret;
+	ret = ni_enable_power_containment(rdev, new_ps, true);
+	if (ret)
+		return ret;
 
 #if 0
 	/* XXX */
-	ni_unrestrict_performance_levels_after_switch(rdev);
+	ret = ni_unrestrict_performance_levels_after_switch(rdev);
+	if (ret)
+		return ret;
 #endif
 
 	return 0;