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 at oracle.com>
Signed-off-by: Huang Rui <ray.huang at amd.com>
---
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 b493369..2d0e42f 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
