drm/amdgpu: add zero timeout check in amdgpu_fence_wait_seq_timeout

Signed-off-by: Jack Xiao <Jack.Xiao@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
index 9ce6023a426103d1e035aeacd472be5268d43e82..48ca637c50296b7a1e4894dab9874ef6496296e4 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
@@ -522,6 +522,10 @@ long amdgpu_fence_wait_seq_timeout(struct amdgpu_device *adev, u64 *target_seq,
        bool signaled;
        int i, r;
 
+       if (timeout == 0) {
+               return amdgpu_fence_any_seq_signaled(adev, target_seq);
+       }
+
        while (!amdgpu_fence_any_seq_signaled(adev, target_seq)) {
 
                /* Save current sequence values, used to check for GPU lockups */