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authorHuang Rui <ray.huang@amd.com>2018-05-18 10:39:16 +0800
committerAlex Deucher <alexander.deucher@amd.com>2018-06-13 13:45:21 -0500
commit7584498c1c67bba4d1f5a0f7bf48c9a50c3ff5c8 (patch)
treeaa6f1045cf418242a71a709d07ec4ee1dbfec490 /drivers
parent06b18f61ee78f8c69417c3a5e4f21ed678662315 (diff)
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 <dan.carpenter@oracle.com> Signed-off-by: Huang Rui <ray.huang@amd.com> Reviewed-by: Evan Quan <evan.quan@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/amd/powerplay/amd_powerplay.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
index d0e6e2dd6bc6..0969b65003ed 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)