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amd/powerplay: use kmemdup instead of kmalloc + memcpy

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Save a few clocks by replacing calls to kmalloc followed by memcpy
with a single call to kmemdup.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Edward O'Callaghan
2016-09-04 12:36:19 +10:00
committed by Alex Deucher
parent 41698abb4d
commit efdf7a9319
1 changed files with 3 additions and 6 deletions
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9
drivers/gpu/drm/amd/powerplay/amd_powerplay.c
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@@ -764,15 +764,12 @@ static int pp_dpm_set_pp_table(void *handle, const char *buf, size_t size)
PP_CHECK_HW(hwmgr);
if (!hwmgr->hardcode_pp_table) {
hwmgr->hardcode_pp_table =
kzalloc(hwmgr->soft_pp_table_size, GFP_KERNEL);
hwmgr->hardcode_pp_table = kmemdup(hwmgr->soft_pp_table,
hwmgr->soft_pp_table_size,
GFP_KERNEL);
if (!hwmgr->hardcode_pp_table)
return -ENOMEM;
/* to avoid powerplay crash when hardcode pptable is empty */
memcpy(hwmgr->hardcode_pp_table, hwmgr->soft_pp_table,
hwmgr->soft_pp_table_size);
}
memcpy(hwmgr->hardcode_pp_table, buf, size);