uar_lock spinlock was used in mlx4_ib_cq_arm without being
initialized (on 32-bit hosts, in 64-bit atomic writes).
Signed-off-by: Jack Morgenstein <[EMAIL PROTECTED]>
diff --git a/drivers/infiniband/hw/mlx4/main.c
b/drivers/infiniband/hw/mlx4/main.c
index 7959698..ad107f2 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -561,6 +561,7 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
spin_lock_init(&ibdev->sm_lock);
mutex_init(&ibdev->cap_mask_mutex);
+ MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
if (ib_register_device(&ibdev->ib_dev))
goto err_map;
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