[PATCH AUTOSEL 6.10 101/121] drm/amdgpu: add missing error handling in function amdgpu_gmc_flush_gpu_tlb_pasid

Sasha Levin
2024-08-01T00:17:46Z

From: Bob Zhou <bob.zhou@amd.com>

[ Upstream commit 9ff2e14cf013fa887e269bdc5ea3cffacada8635 ]

Fix the unchecked return value warning reported by Coverity,
so add error handling.

Signed-off-by: Bob Zhou <bob.zhou@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
index 08b9dfb653355..1f02d282cfcd7 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
@@ -720,7 +720,11 @@ int amdgpu_gmc_flush_gpu_tlb_pasid(struct amdgpu_device *adev, uint16_t pasid,
ndw += kiq->pmf->invalidate_tlbs_size;

spin_lock(&adev->gfx.kiq[inst].ring_lock);
- amdgpu_ring_alloc(ring, ndw);
+ r = amdgpu_ring_alloc(ring, ndw);
+ if (r) {
+ spin_unlock(&adev->gfx.kiq[inst].ring_lock);
+ goto error_unlock_reset;
+ }
if (adev->gmc.flush_tlb_needs_extra_type_2)
kiq->pmf->kiq_invalidate_tlbs(ring, pasid, 2, all_hub);

--
2.43.0