From 7584498c1c67bba4d1f5a0f7bf48c9a50c3ff5c8 Mon Sep 17 00:00:00 2001 From: Huang Rui Date: Fri, 18 May 2018 10:39:16 +0800 Subject: [PATCH] drm/amd/powerplay: fix missed hwmgr check warning before call gfx_off_control handler Patch 9667849bbb8d: "drm/amd/powerplay: add control gfxoff enabling in late init" from Mar 13, 2018, leads to the following static checker warning: drivers/gpu/drm/amd/amdgpu/../powerplay/amd_powerplay.c:194 pp_late_init() error: we previously assumed 'hwmgr' could be null (see line 185) drivers/gpu/drm/amd/amdgpu/../powerplay/amd_powerplay.c This patch fixes the warning to add hwmgr checking. Reported-by: Dan Carpenter Signed-off-by: Huang Rui Reviewed-by: Evan Quan Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/powerplay/amd_powerplay.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c index d0e6e2d..0969b65 100644 --- a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c +++ b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c @@ -191,7 +191,8 @@ static int pp_late_init(void *handle) if (adev->pm.smu_prv_buffer_size != 0) pp_reserve_vram_for_smu(adev); - if (hwmgr->hwmgr_func->gfx_off_control && + if (hwmgr && hwmgr->hwmgr_func && + hwmgr->hwmgr_func->gfx_off_control && (hwmgr->feature_mask & PP_GFXOFF_MASK)) { ret = hwmgr->hwmgr_func->gfx_off_control(hwmgr, true); if (ret) -- 2.7.4