[PATCH] drm/amd/pm: Use kmemdup instead of kmalloc and memcpy

From: Tian Tao
Date: Tue Nov 10 2020 - 06:34:41 EST


Fixes coccicheck warning:
drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega12_processpptables.c:255:
36-43: WARNING opportunity for kmemdup

Signed-off-by: Tian Tao <tiantao6@xxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega12_processpptables.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega12_processpptables.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega12_processpptables.c
index 740e2fc..1e79baa 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega12_processpptables.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega12_processpptables.c
@@ -252,12 +252,11 @@ static int init_powerplay_table_information(
phm_copy_clock_limits_array(hwmgr, &pptable_information->power_saving_clock_max, powerplay_table->PowerSavingClockMax, ATOM_VEGA12_PPCLOCK_COUNT);
phm_copy_clock_limits_array(hwmgr, &pptable_information->power_saving_clock_min, powerplay_table->PowerSavingClockMin, ATOM_VEGA12_PPCLOCK_COUNT);

- pptable_information->smc_pptable = kmalloc(sizeof(PPTable_t), GFP_KERNEL);
+ pptable_information->smc_pptable = kmemdup(&(powerplay_table->smcPPTable),
+ sizeof(PPTable_t), GFP_KERNEL);
if (pptable_information->smc_pptable == NULL)
return -ENOMEM;

- memcpy(pptable_information->smc_pptable, &(powerplay_table->smcPPTable), sizeof(PPTable_t));
-
result = append_vbios_pptable(hwmgr, (pptable_information->smc_pptable));

return result;
--
2.7.4