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Commit 26c6bc7b authored by Jack Morgenstein's avatar Jack Morgenstein Committed by Roland Dreier
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IB/mlx4: Fix uninitialized spinlock for 32-bit archs 



uar_lock spinlock was used in mlx4_ib_cq_arm without being initialized
(this only affects 32-bit archs, because uar_lock is not used on
64-bit archs and MLX4_INIT_DOORBELL_LOCK() is a NOP).

Signed-off-by: default avatarJack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent 20eebcf0

drivers/infiniband/hw/mlx4/main.c

+1 −0
Original line number Diff line number Diff line
@@ -489,6 +489,7 @@ static void *mlx4_ib_add(struct mlx4_dev *dev) 
	ibdev->uar_map = ioremap(ibdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE);

	if (!ibdev->uar_map)

		goto err_uar;

	MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);



	INIT_LIST_HEAD(&ibdev->pgdir_list);

	mutex_init(&ibdev->pgdir_mutex);