From 34a4d2bf06b3ab92024b8e26d6049411369d1f1a Mon Sep 17 00:00:00 2001 From: Monk Liu Date: Tue, 24 Oct 2017 15:10:11 +0800 Subject: [PATCH] drm/amdgpu:fix random missing of FLR NOTIFY MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Signed-off-by: Monk Liu Acked-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c index c32d0b0868e8..d31259e5bb45 100644 --- a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c +++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c @@ -282,9 +282,17 @@ static int xgpu_ai_mailbox_rcv_irq(struct amdgpu_device *adev, /* see what event we get */ r = xgpu_ai_mailbox_rcv_msg(adev, IDH_FLR_NOTIFICATION); - /* only handle FLR_NOTIFY now */ - if (!r) - schedule_work(&adev->virt.flr_work); + /* sometimes the interrupt is delayed to inject to VM, so under such case + * the IDH_FLR_NOTIFICATION is overwritten by VF FLR from GIM side, thus + * above recieve message could be failed, we should schedule the flr_work + * anyway + */ + if (r) { + DRM_ERROR("FLR_NOTIFICATION is missed\n"); + xgpu_ai_mailbox_send_ack(adev); + } + + schedule_work(&adev->virt.flr_work); } return 0; -- 2.11.0