[PATCH 3/3] SWDEV-247673 - stop data_exchange work thread before reset

[Bokun Zhang]

From: Tiecheng Zhou <Tiecheng.Zhou at amd.com>

In FLR routine, init_data_exchange is called at reset_sriov
while fini_data_exchange is not. This will duplicating work
thread.

So call fini_data_exchange before reset for SRIOV

Change-Id: I974c6a3c5de86736eebefc386c03fe0e18e1fae3
Signed-off-by: Tiecheng Zhou <Tiecheng.Zhou at amd.com>
Signed-off-by: Bokun Zhang <Bokun.Zhang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 483ec0136332..e71cf3b34e15 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -4080,6 +4080,11 @@ static int amdgpu_device_pre_asic_reset(struct amdgpu_device *adev,
 
 	amdgpu_debugfs_wait_dump(adev);
 
+	if (amdgpu_sriov_vf(adev)) {
+		/* stop the data exchange thread */
+		amdgpu_virt_fini_data_exchange(adev);
+	}
+
 	/* block all schedulers and reset given job's ring */
 	for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
 		struct amdgpu_ring *ring = adev->rings[i];
-- 
2.20.1