From 347704457b8c2160a0a84a47507eafccf9c3ff48 Mon Sep 17 00:00:00 2001 From: Prike Liang Date: Tue, 6 Jan 2026 17:00:57 +0800 Subject: [PATCH 1/2] drm/amdgpu: validate the flush_gpu_tlb_pasid() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit BugLink: https://bugs.launchpad.net/bugs/2144577 Validate flush_gpu_tlb_pasid() availability before flushing tlb. Signed-off-by: Prike Liang Reviewed-by: Christian König Signed-off-by: Alex Deucher (cherry picked from commit f4db9913e4d3dabe9ff3ea6178f2c1bc286012b8) Signed-off-by: Chia-Lin Kao (AceLan) --- drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c index 4814be022f328..84ade0f9f2f89 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c @@ -732,6 +732,10 @@ int amdgpu_gmc_flush_gpu_tlb_pasid(struct amdgpu_device *adev, uint16_t pasid, return 0; if (!adev->gmc.flush_pasid_uses_kiq || !ring->sched.ready) { + + if (!adev->gmc.gmc_funcs->flush_gpu_tlb_pasid) + return 0; + if (adev->gmc.flush_tlb_needs_extra_type_2) adev->gmc.gmc_funcs->flush_gpu_tlb_pasid(adev, pasid, 2, all_hub, -- 2.53.0