drm/radeon/dpm/evergreen: 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>

diff --git a/drivers/gpu/drm/radeon/cypress_dpm.c b/drivers/gpu/drm/radeon/cypress_dpm.c
index 1c6c3a3c5c32abe9256399727a725aa699134494..9bf7ff7907b2621dfc6475c7dc6be7c74a8e035c 100644 (file)
--- a/drivers/gpu/drm/radeon/cypress_dpm.c
+++ b/drivers/gpu/drm/radeon/cypress_dpm.c
@@ -1802,6 +1802,7 @@ int cypress_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)
                rv770_restore_cgcg(rdev);
@@ -1811,16 +1812,23 @@ int cypress_dpm_enable(struct radeon_device *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 (pi->mvdd_control)
-               cypress_get_mvdd_configuration(rdev);
+       if (pi->mvdd_control) {
+               ret = cypress_get_mvdd_configuration(rdev);
+               if (ret)
+                       return ret;
+       }
 
        if (eg_pi->dynamic_ac_timing) {
                cypress_set_mc_reg_address_table(rdev);
                cypress_force_mc_use_s0(rdev, boot_ps);
-               cypress_initialize_mc_reg_table(rdev);
+               ret = cypress_initialize_mc_reg_table(rdev);
+               if (ret)
+                       eg_pi->dynamic_ac_timing = false;
                cypress_force_mc_use_s1(rdev, boot_ps);
        }
 
@@ -1845,22 +1853,31 @@ int cypress_dpm_enable(struct radeon_device *rdev)
        if (pi->dynamic_pcie_gen2)
                cypress_enable_dynamic_pcie_gen2(rdev, true);
 
-       if (rv770_upload_firmware(rdev))
-               return -EINVAL;
+       ret = rv770_upload_firmware(rdev);
+       if (ret)
+               return ret;
 
-       cypress_get_table_locations(rdev);
+       ret = cypress_get_table_locations(rdev);
+       if (ret)
+               return ret;
 
-       if (cypress_init_smc_table(rdev, boot_ps))
-               return -EINVAL;
+       ret = cypress_init_smc_table(rdev, boot_ps);
+       if (ret)
+               return ret;
 
-       if (eg_pi->dynamic_ac_timing)
-               cypress_populate_mc_reg_table(rdev, boot_ps);
+       if (eg_pi->dynamic_ac_timing) {
+               ret = cypress_populate_mc_reg_table(rdev, boot_ps);
+               if (ret)
+                       return ret;
+       }
 
        cypress_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);
 
@@ -1879,7 +1896,9 @@ int cypress_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, R600_TEMP_RANGE_MAX);
+               ret = rv770_set_thermal_temperature_range(rdev, R600_TEMP_RANGE_MIN, R600_TEMP_RANGE_MAX);
+               if (ret)
+                       return ret;
                rdev->irq.dpm_thermal = true;
                radeon_irq_set(rdev);
                result = rv770_send_msg_to_smc(rdev, PPSMC_MSG_EnableThermalInterrupt);
@@ -1938,29 +1957,45 @@ int cypress_dpm_set_power_state(struct radeon_device *rdev)
        struct evergreen_power_info *eg_pi = evergreen_get_pi(rdev);
        struct radeon_ps *new_ps = rdev->pm.dpm.requested_ps;
        struct radeon_ps *old_ps = rdev->pm.dpm.current_ps;
+       int ret;
 
-       rv770_restrict_performance_levels_before_switch(rdev);
+       ret = rv770_restrict_performance_levels_before_switch(rdev);
+       if (ret)
+               return ret;
 
        if (eg_pi->pcie_performance_request)
                cypress_notify_link_speed_change_before_state_change(rdev, new_ps, old_ps);
 
        rv770_set_uvd_clock_before_set_eng_clock(rdev, new_ps, old_ps);
-       rv770_halt_smc(rdev);
-       cypress_upload_sw_state(rdev, new_ps);
+       ret = rv770_halt_smc(rdev);
+       if (ret)
+               return ret;
+       ret = cypress_upload_sw_state(rdev, new_ps);
+       if (ret)
+               return ret;
 
-       if (eg_pi->dynamic_ac_timing)
-               cypress_upload_mc_reg_table(rdev, new_ps);
+       if (eg_pi->dynamic_ac_timing) {
+               ret = cypress_upload_mc_reg_table(rdev, new_ps);
+               if (ret)
+                       return ret;
+       }
 
        cypress_program_memory_timing_parameters(rdev, new_ps);
 
-       rv770_resume_smc(rdev);
-       rv770_set_sw_state(rdev);
+       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);
 
        if (eg_pi->pcie_performance_request)
                cypress_notify_link_speed_change_after_state_change(rdev, new_ps, old_ps);
 
-       rv770_unrestrict_performance_levels_after_switch(rdev);
+       ret = rv770_unrestrict_performance_levels_after_switch(rdev);
+       if (ret)
+               return ret;
 
        return 0;
 }