drm/amd/powerplay/hwmgr: Remove null check before kfree

kfree on NULL pointer is a no-op and therefore checking is redundant.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by:  Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

4 files changed, 53 insertions, 105 deletions

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c
index bc839ff0bdd0..9f2c0378c059 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c
@@ -1225,10 +1225,8 @@ static int cz_hwmgr_backend_fini(struct pp_hwmgr *hwmgr)
                 phm_destroy_table(hwmgr, &(hwmgr->power_down_asic));
                 phm_destroy_table(hwmgr, &(hwmgr->setup_asic));
 
-                if (NULL != hwmgr->dyn_state.vddc_dep_on_dal_pwrl) {
-                        kfree(hwmgr->dyn_state.vddc_dep_on_dal_pwrl);
-                        hwmgr->dyn_state.vddc_dep_on_dal_pwrl = NULL;
-                }
+                kfree(hwmgr->dyn_state.vddc_dep_on_dal_pwrl);
+                hwmgr->dyn_state.vddc_dep_on_dal_pwrl = NULL;
 
                 kfree(hwmgr->backend);
                 hwmgr->backend = NULL;
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/processpptables.c b/drivers/gpu/drm/amd/powerplay/hwmgr/processpptables.c
index 0f61e670da32..485f7ebdc754 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/processpptables.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/processpptables.c
@@ -1652,85 +1652,53 @@ static int pp_tables_uninitialize(struct pp_hwmgr *hwmgr)
         if (hwmgr->chip_id == CHIP_RAVEN)
                 return 0;
 
-        if (NULL != hwmgr->dyn_state.vddc_dependency_on_sclk) {
-                kfree(hwmgr->dyn_state.vddc_dependency_on_sclk);
-                hwmgr->dyn_state.vddc_dependency_on_sclk = NULL;
-        }
+        kfree(hwmgr->dyn_state.vddc_dependency_on_sclk);
+        hwmgr->dyn_state.vddc_dependency_on_sclk = NULL;
 
-        if (NULL != hwmgr->dyn_state.vddci_dependency_on_mclk) {
-                kfree(hwmgr->dyn_state.vddci_dependency_on_mclk);
-                hwmgr->dyn_state.vddci_dependency_on_mclk = NULL;
-        }
+        kfree(hwmgr->dyn_state.vddci_dependency_on_mclk);
+        hwmgr->dyn_state.vddci_dependency_on_mclk = NULL;
 
-        if (NULL != hwmgr->dyn_state.vddc_dependency_on_mclk) {
-                kfree(hwmgr->dyn_state.vddc_dependency_on_mclk);
-                hwmgr->dyn_state.vddc_dependency_on_mclk = NULL;
-        }
+        kfree(hwmgr->dyn_state.vddc_dependency_on_mclk);
+        hwmgr->dyn_state.vddc_dependency_on_mclk = NULL;
 
-        if (NULL != hwmgr->dyn_state.mvdd_dependency_on_mclk) {
-                kfree(hwmgr->dyn_state.mvdd_dependency_on_mclk);
-                hwmgr->dyn_state.mvdd_dependency_on_mclk = NULL;
-        }
+        kfree(hwmgr->dyn_state.mvdd_dependency_on_mclk);
+        hwmgr->dyn_state.mvdd_dependency_on_mclk = NULL;
 
-        if (NULL != hwmgr->dyn_state.valid_mclk_values) {
-                kfree(hwmgr->dyn_state.valid_mclk_values);
-                hwmgr->dyn_state.valid_mclk_values = NULL;
-        }
+        kfree(hwmgr->dyn_state.valid_mclk_values);
+        hwmgr->dyn_state.valid_mclk_values = NULL;
 
-        if (NULL != hwmgr->dyn_state.valid_sclk_values) {
-                kfree(hwmgr->dyn_state.valid_sclk_values);
-                hwmgr->dyn_state.valid_sclk_values = NULL;
-        }
+        kfree(hwmgr->dyn_state.valid_sclk_values);
+        hwmgr->dyn_state.valid_sclk_values = NULL;
 
-        if (NULL != hwmgr->dyn_state.cac_leakage_table) {
-                kfree(hwmgr->dyn_state.cac_leakage_table);
-                hwmgr->dyn_state.cac_leakage_table = NULL;
-        }
+        kfree(hwmgr->dyn_state.cac_leakage_table);
+        hwmgr->dyn_state.cac_leakage_table = NULL;
 
-        if (NULL != hwmgr->dyn_state.vddc_phase_shed_limits_table) {
-                kfree(hwmgr->dyn_state.vddc_phase_shed_limits_table);
-                hwmgr->dyn_state.vddc_phase_shed_limits_table = NULL;
-        }
+        kfree(hwmgr->dyn_state.vddc_phase_shed_limits_table);
+        hwmgr->dyn_state.vddc_phase_shed_limits_table = NULL;
 
-        if (NULL != hwmgr->dyn_state.vce_clock_voltage_dependency_table) {
-                kfree(hwmgr->dyn_state.vce_clock_voltage_dependency_table);
-                hwmgr->dyn_state.vce_clock_voltage_dependency_table = NULL;
-        }
+        kfree(hwmgr->dyn_state.vce_clock_voltage_dependency_table);
+        hwmgr->dyn_state.vce_clock_voltage_dependency_table = NULL;
 
-        if (NULL != hwmgr->dyn_state.uvd_clock_voltage_dependency_table) {
-                kfree(hwmgr->dyn_state.uvd_clock_voltage_dependency_table);
-                hwmgr->dyn_state.uvd_clock_voltage_dependency_table = NULL;
-        }
+        kfree(hwmgr->dyn_state.uvd_clock_voltage_dependency_table);
+        hwmgr->dyn_state.uvd_clock_voltage_dependency_table = NULL;
 
-        if (NULL != hwmgr->dyn_state.samu_clock_voltage_dependency_table) {
-                kfree(hwmgr->dyn_state.samu_clock_voltage_dependency_table);
-                hwmgr->dyn_state.samu_clock_voltage_dependency_table = NULL;
-        }
+        kfree(hwmgr->dyn_state.samu_clock_voltage_dependency_table);
+        hwmgr->dyn_state.samu_clock_voltage_dependency_table = NULL;
 
-        if (NULL != hwmgr->dyn_state.acp_clock_voltage_dependency_table) {
-                kfree(hwmgr->dyn_state.acp_clock_voltage_dependency_table);
-                hwmgr->dyn_state.acp_clock_voltage_dependency_table = NULL;
-        }
+        kfree(hwmgr->dyn_state.acp_clock_voltage_dependency_table);
+        hwmgr->dyn_state.acp_clock_voltage_dependency_table = NULL;
 
-        if (NULL != hwmgr->dyn_state.cac_dtp_table) {
-                kfree(hwmgr->dyn_state.cac_dtp_table);
-                hwmgr->dyn_state.cac_dtp_table = NULL;
-        }
+        kfree(hwmgr->dyn_state.cac_dtp_table);
+        hwmgr->dyn_state.cac_dtp_table = NULL;
 
-        if (NULL != hwmgr->dyn_state.ppm_parameter_table) {
-                kfree(hwmgr->dyn_state.ppm_parameter_table);
-                hwmgr->dyn_state.ppm_parameter_table = NULL;
-        }
+        kfree(hwmgr->dyn_state.ppm_parameter_table);
+        hwmgr->dyn_state.ppm_parameter_table = NULL;
 
-        if (NULL != hwmgr->dyn_state.vdd_gfx_dependency_on_sclk) {
-                kfree(hwmgr->dyn_state.vdd_gfx_dependency_on_sclk);
-                hwmgr->dyn_state.vdd_gfx_dependency_on_sclk = NULL;
-        }
+        kfree(hwmgr->dyn_state.vdd_gfx_dependency_on_sclk);
+        hwmgr->dyn_state.vdd_gfx_dependency_on_sclk = NULL;
 
-        if (NULL != hwmgr->dyn_state.vq_budgeting_table) {
-                kfree(hwmgr->dyn_state.vq_budgeting_table);
-                hwmgr->dyn_state.vq_budgeting_table = NULL;
-        }
+        kfree(hwmgr->dyn_state.vq_budgeting_table);
+        hwmgr->dyn_state.vq_budgeting_table = NULL;
 
         return 0;
 }
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/rv_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/rv_hwmgr.c
index 441a916ba3d6..d5a9c0792de0 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/rv_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/rv_hwmgr.c
@@ -552,35 +552,21 @@ static int rv_hwmgr_backend_fini(struct pp_hwmgr *hwmgr)
         phm_destroy_table(hwmgr, &(hwmgr->power_down_asic));
         phm_destroy_table(hwmgr, &(hwmgr->setup_asic));
 
-        if (pinfo->vdd_dep_on_dcefclk) {
-                kfree(pinfo->vdd_dep_on_dcefclk);
-                pinfo->vdd_dep_on_dcefclk = NULL;
-        }
-        if (pinfo->vdd_dep_on_socclk) {
-                kfree(pinfo->vdd_dep_on_socclk);
-                pinfo->vdd_dep_on_socclk = NULL;
-        }
-        if (pinfo->vdd_dep_on_fclk) {
-                kfree(pinfo->vdd_dep_on_fclk);
-                pinfo->vdd_dep_on_fclk = NULL;
-        }
-        if (pinfo->vdd_dep_on_dispclk) {
-                kfree(pinfo->vdd_dep_on_dispclk);
-                pinfo->vdd_dep_on_dispclk = NULL;
-        }
-        if (pinfo->vdd_dep_on_dppclk) {
-                kfree(pinfo->vdd_dep_on_dppclk);
-                pinfo->vdd_dep_on_dppclk = NULL;
-        }
-        if (pinfo->vdd_dep_on_phyclk) {
-                kfree(pinfo->vdd_dep_on_phyclk);
-                pinfo->vdd_dep_on_phyclk = NULL;
-        }
-
-        if (NULL != hwmgr->dyn_state.vddc_dep_on_dal_pwrl) {
-                kfree(hwmgr->dyn_state.vddc_dep_on_dal_pwrl);
-                hwmgr->dyn_state.vddc_dep_on_dal_pwrl = NULL;
-        }
+        kfree(pinfo->vdd_dep_on_dcefclk);
+        pinfo->vdd_dep_on_dcefclk = NULL;
+        kfree(pinfo->vdd_dep_on_socclk);
+        pinfo->vdd_dep_on_socclk = NULL;
+        kfree(pinfo->vdd_dep_on_fclk);
+        pinfo->vdd_dep_on_fclk = NULL;
+        kfree(pinfo->vdd_dep_on_dispclk);
+        pinfo->vdd_dep_on_dispclk = NULL;
+        kfree(pinfo->vdd_dep_on_dppclk);
+        pinfo->vdd_dep_on_dppclk = NULL;
+        kfree(pinfo->vdd_dep_on_phyclk);
+        pinfo->vdd_dep_on_phyclk = NULL;
+
+        kfree(hwmgr->dyn_state.vddc_dep_on_dal_pwrl);
+        hwmgr->dyn_state.vddc_dep_on_dal_pwrl = NULL;
 
         kfree(hwmgr->backend);
         hwmgr->backend = NULL;
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
index c2743233ba10..eb8a3ff70cf7 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
@@ -2282,15 +2282,11 @@ static int smu7_set_private_data_based_on_pptable_v0(struct pp_hwmgr *hwmgr)
 
 static int smu7_hwmgr_backend_fini(struct pp_hwmgr *hwmgr)
 {
-        if (NULL != hwmgr->dyn_state.vddc_dep_on_dal_pwrl) {
-                kfree(hwmgr->dyn_state.vddc_dep_on_dal_pwrl);
-                hwmgr->dyn_state.vddc_dep_on_dal_pwrl = NULL;
-        }
+        kfree(hwmgr->dyn_state.vddc_dep_on_dal_pwrl);
+        hwmgr->dyn_state.vddc_dep_on_dal_pwrl = NULL;
         pp_smu7_thermal_fini(hwmgr);
-        if (NULL != hwmgr->backend) {
-                kfree(hwmgr->backend);
-                hwmgr->backend = NULL;
-        }
+        kfree(hwmgr->backend);
+        hwmgr->backend = NULL;
 
         return 0;
 }