From 4ce71be67b08d00729f4d8735e2b76d8b5882d2c Mon Sep 17 00:00:00 2001
From: Hawking Zhang <Hawking.Zhang@amd.com>
Date: Sat, 31 Aug 2019 13:18:40 +0800
Subject: drm/amdgpu: check mmhub_funcs pointer before refering to it
Git-commit: 4ce71be67b08d00729f4d8735e2b76d8b5882d2c
Patch-mainline: v5.5-rc1
References: bsc#1152489
mmhub callback functions are not initialized for all the ASICs
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index 420dcdd769ff..08a47a5785cd 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -799,7 +799,7 @@ static int gmc_v9_0_ecc_late_init(void *handle)
goto umc_late_fini;
}
- if (adev->mmhub_funcs->ras_late_init) {
+ if (adev->mmhub_funcs && adev->mmhub_funcs->ras_late_init) {
r = adev->mmhub_funcs->ras_late_init(adev);
if (r)
return r;
--
2.28.0