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drm/amd/powerplay: avoid NULL pointer dereference 

if (a == NULL || a->b == NULL)
leads to a NULL pointer dereference if a == NULL.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Heinrich Schuchardt 2016-08-21 20:21:27 +02:00 committed by Alex Deucher
parent 887656f0b7
commit d36f3e048e
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/amd/powerplay/amd_powerplay.c
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@ -163,12 +163,12 @@ static int pp_hw_fini(void *handle)
pp_handle = (struct pp_instance *)handle;
eventmgr = pp_handle->eventmgr;
if (eventmgr != NULL || eventmgr->pp_eventmgr_fini != NULL)
if (eventmgr != NULL && eventmgr->pp_eventmgr_fini != NULL)
eventmgr->pp_eventmgr_fini(eventmgr);
smumgr = pp_handle->smu_mgr;
if (smumgr != NULL || smumgr->smumgr_funcs != NULL ||
if (smumgr != NULL && smumgr->smumgr_funcs != NULL &&
smumgr->smumgr_funcs->smu_fini != NULL)
smumgr->smumgr_funcs->smu_fini(smumgr);