[PATCH 5.15 557/846] drm/amd/amdgpu: fix psp tmr bo pin count leak in SRIOV

From: Greg Kroah-Hartman
Date: Mon Jan 24 2022 - 18:07:15 EST


From: Jingwen Chen <Jingwen.Chen2@xxxxxxx>

[ Upstream commit 85dfc1d692c9434c37842e610be37cd4ae4e0081 ]

[Why]
psp tmr bo will be pinned during loading amdgpu and reset in SRIOV while
only unpinned in unload amdgpu

[How]
add amdgpu_in_reset and sriov judgement to skip pin bo

v2: fix wrong judgement

Signed-off-by: Jingwen Chen <Jingwen.Chen2@xxxxxxx>
Reviewed-by: Horace Chen <horace.chen@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index 9b41cb8c3de54..86e2090bbd6e0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -2207,12 +2207,16 @@ static int psp_hw_start(struct psp_context *psp)
return ret;
}

+ if (amdgpu_sriov_vf(adev) && amdgpu_in_reset(adev))
+ goto skip_pin_bo;
+
ret = psp_tmr_init(psp);
if (ret) {
DRM_ERROR("PSP tmr init failed!\n");
return ret;
}

+skip_pin_bo:
/*
* For ASICs with DF Cstate management centralized
* to PMFW, TMR setup should be performed after PMFW
--
2.34.1