drm/amdgpu: SRIOV flr_work should take write_lock

[linux-2.6-microblaze.git] / drivers / gpu / drm / amd / amdgpu / mxgpu_nv.c

diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
index 48e588d..9f7aac4 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
+++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
@@ -273,7 +273,7 @@ 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_read_trylock(&adev->reset_sem))
+       if (!down_write_trylock(&adev->reset_sem))
                return;
 
        amdgpu_virt_fini_data_exchange(adev);
@@ -289,7 +289,7 @@ static void xgpu_nv_mailbox_flr_work(struct work_struct *work)
 
 flr_done:
        atomic_set(&adev->in_gpu_reset, 0);
-       up_read(&adev->reset_sem);
+       up_write(&adev->reset_sem);
 
        /* Trigger recovery for world switch failure if no TDR */
        if (amdgpu_device_should_recover_gpu(adev)