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Date: Fri, 29 Mar 2019 21:28:21 -0400 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: wentalou <Wentao.Lou@....com>, Alex Deucher <alexander.deucher@....com>, Sasha Levin <sashal@...nel.org>, amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org Subject: [PATCH AUTOSEL 5.0 04/25] drm/amdgpu: psp_ring_destroy cause psp->km_ring.ring_mem NULL From: wentalou <Wentao.Lou@....com> [ Upstream commit 14d20ec7f31ef96a2e7dcf7880b13dde1d473b56 ] psp_ring_destroy inside psp_load_fw cause psp->km_ring.ring_mem NULL. Call Trace occurred when psp_cmd_submit. should be psp_ring_stop instead. Reviewed-by: Xiangliang Yu <Xiangliang.Yu@....com> Signed-off-by: Wentao Lou <Wentao.Lou@....com> Signed-off-by: Alex Deucher <alexander.deucher@....com> Signed-off-by: Sasha Levin <sashal@...nel.org> --- drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c index 3a9b48b227ac..a7208ca0bfe3 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c @@ -546,7 +546,7 @@ static int psp_load_fw(struct amdgpu_device *adev) struct psp_context *psp = &adev->psp; if (amdgpu_sriov_vf(adev) && adev->in_gpu_reset) { - psp_ring_destroy(psp, PSP_RING_TYPE__KM); + psp_ring_stop(psp, PSP_RING_TYPE__KM); /* should not destroy ring, only stop */ goto skip_memalloc; } -- 2.19.1
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