diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
index 06c333b2213b..d78d9e7fb9d1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
@@ -763,7 +763,7 @@ void amdgpu_fence_save_wptr(struct amdgpu_fence *af)
 }
 
 static void amdgpu_ring_backup_unprocessed_command(struct amdgpu_ring *ring,
-						   u64 start_wptr, u32 end_wptr)
+						   u64 start_wptr, u64 end_wptr)
 {
 	unsigned int first_idx = start_wptr & ring->buf_mask;
 	unsigned int last_idx = end_wptr & ring->buf_mask;