[PATCH] drm/amdgpu: make IB test synchronize with init for SRIOV(v2)

[Monk Liu]

issue:
originally we kickoff IB test asynchronously with driver's
init, thus
the IB test may still running when the driver loading
done (modprobe amdgpu done).
if we shutdown VM immediately after amdgpu driver
loaded then GPU may
hang because the IB test is still running

fix:
flush the delayed_init routine at the bottom of device_init
to avoid driver loading done prior to the IB test completes

Signed-off-by: Monk Liu <Monk.Liu at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 457f5d2..7a4e965 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3295,6 +3295,9 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 	queue_delayed_work(system_wq, &adev->delayed_init_work,
 			   msecs_to_jiffies(AMDGPU_RESUME_MS));
 
+	if (amdgpu_sriov_vf(adev))
+		flush_delayed_work(&adev->delayed_init_work);
+
 	r = sysfs_create_files(&adev->dev->kobj, amdgpu_dev_attributes);
 	if (r) {
 		dev_err(adev->dev, "Could not create amdgpu device attr\n");
-- 
2.7.4