[PATCH AUTOSEL 5.10 17/38] drm/amdgpu: the warning dereferencing obj for nbio_v7_4

[Sasha Levin]

From: Jesse Zhang <jesse.zhang@xxxxxxx>

[ Upstream commit d190b459b2a4304307c3468ed97477b808381011 ]

if ras_manager obj null, don't print NBIO err data

Signed-off-by: Jesse Zhang <Jesse.Zhang@xxxxxxx>
Suggested-by: Tim Huang <Tim.Huang@xxxxxxx>
Reviewed-by: Tim Huang <Tim.Huang@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
index eadc9526d33fe..b81572dc115f7 100644
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
@@ -313,7 +313,7 @@ static void nbio_v7_4_handle_ras_controller_intr_no_bifring(struct amdgpu_device
 						RAS_CNTLR_INTERRUPT_CLEAR, 1);
 		WREG32_SOC15(NBIO, 0, mmBIF_DOORBELL_INT_CNTL, bif_doorbell_intr_cntl);
 
-		if (!ras->disable_ras_err_cnt_harvest) {
+		if (ras && !ras->disable_ras_err_cnt_harvest && obj) {
 			/*
 			 * clear error status after ras_controller_intr
 			 * according to hw team and count ue number
-- 
2.43.0