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drm/amdgpu:fix random missing of FLR NOTIFY

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[ Upstream commit 34a4d2bf06 ]

Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Monk Liu
2017-10-24 15:10:11 +08:00
committed by Greg Kroah-Hartman
parent 0049457bfd
commit 5d8c64ea75
1 changed files with 11 additions and 3 deletions
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14
drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
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@@ -276,9 +276,17 @@ 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;