drm/amd/amdgpu: fix gmc bo pin count leak in SRIOV

[ Upstream commit 948e7ce01413b71395723aaf846015062aea3a43 ]

[Why]
gmc 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@amd.com>
Reviewed-by: Horace Chen <horace.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
index e47104a..3c01be6 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
@@ -1021,10 +1021,14 @@ static int gmc_v10_0_gart_enable(struct amdgpu_device *adev)
                return -EINVAL;
        }
 
+       if (amdgpu_sriov_vf(adev) && amdgpu_in_reset(adev))
+               goto skip_pin_bo;
+
        r = amdgpu_gart_table_vram_pin(adev);
        if (r)
                return r;
 
+skip_pin_bo:
        r = adev->gfxhub.funcs->gart_enable(adev);
        if (r)
                return r;

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index 5551359..b5d9324 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -1708,10 +1708,14 @@ static int gmc_v9_0_gart_enable(struct amdgpu_device *adev)
                return -EINVAL;
        }
 
+       if (amdgpu_sriov_vf(adev) && amdgpu_in_reset(adev))
+               goto skip_pin_bo;
+
        r = amdgpu_gart_table_vram_pin(adev);
        if (r)
                return r;
 
+skip_pin_bo:
        r = adev->gfxhub.funcs->gart_enable(adev);
        if (r)
                return r;