[PATCH 4.2 127/134] IB/mlx4: Fix potential deadlock when sending mad to wire

4.2-stable review patch. If anyone has any objections, please let me know. -- From: Jack Morgenstein commit 90c1d8b6350cca9d8a234f03c77a317a7613bcee upstream. send_mad_to_wire takes the same spinlock that is taken in the interrupt context. Therefore, it needs

[PATCH 4.2 127/134] IB/mlx4: Fix potential deadlock when sending mad to wire

4.2-stable review patch. If anyone has any objections, please let me know. -- From: Jack Morgenstein commit 90c1d8b6350cca9d8a234f03c77a317a7613bcee upstream. send_mad_to_wire takes the same spinlock that is taken in the interrupt context.