[PATCH 3/6] drm/amdgpu: screen freeze and userq driver crash

[Arunpravin Paneer Selvam]

Screen freeze and userq fence driver crash while playing Xonotic

Signed-off-by: Arunpravin Paneer Selvam <arunpravin.paneersel...@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c
index d2e1d0d0f29f..8a3b5374cc1a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c
@@ -187,6 +187,7 @@ int amdgpu_userq_fence_create(struct amdgpu_usermode_queue 
*userq,
        struct amdgpu_userq_fence_driver *fence_drv;
        struct amdgpu_userq_fence *userq_fence;
        struct dma_fence *fence;
+       unsigned long flags;
 
        fence_drv = userq->fence_drv;
        if (!fence_drv)
@@ -230,14 +231,15 @@ int amdgpu_userq_fence_create(struct 
amdgpu_usermode_queue *userq,
                }
        }
 
-       spin_lock(&fence_drv->fence_list_lock);
        /* Check if hardware has already processed the job */
-       if (!dma_fence_is_signaled(fence))
+       if (!dma_fence_is_signaled(fence)) {
+               spin_lock_irqsave(&fence_drv->fence_list_lock, flags);
                list_add_tail(&userq_fence->link, &fence_drv->fences);
-       else
-               dma_fence_put(fence);
 
-       spin_unlock(&fence_drv->fence_list_lock);
+               spin_unlock_irqrestore(&fence_drv->fence_list_lock, flags);
+       } else {
+               dma_fence_put(fence);
+       }
 
        *f = fence;
 
-- 
2.34.1