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path: root/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
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Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
index a35e6d87e537..477d0dde19c5 100644
--- a/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
+++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
@@ -281,11 +281,12 @@ static void xgpu_nv_mailbox_flr_work(struct work_struct *work)
* otherwise the mailbox msg will be ruined/reseted by
* the VF FLR.
*/
- if (!down_write_trylock(&adev->reset_sem))
+ if (atomic_cmpxchg(&adev->in_gpu_reset, 0, 1) != 0)
return;
+ down_write(&adev->reset_sem);
+
amdgpu_virt_fini_data_exchange(adev);
- atomic_set(&adev->in_gpu_reset, 1);
xgpu_nv_mailbox_trans_msg(adev, IDH_READY_TO_RESET, 0, 0, 0);