[PATCH] net/mlx4: Support shutdown() interface

[David Miller]

From: Gavin Shan <shangw at linux.vnet.ibm.com>
Date: Tue,  4 Mar 2014 15:35:20 +0800

> In kexec scenario, we failed to load the mlx4 driver in the
> second kernel because the ownership bit was hold by the first
> kernel without release correctly.
> 
> The patch adds shutdown() interface so that the ownership can
> be released correctly in the first kernel. It also helps avoiding
> EEH error happened during boot stage of the second kernel because
> of undesired traffic, which can't be handled by hardware during
> that stage on Power platform.
> 
> Signed-off-by: Gavin Shan <shangw at linux.vnet.ibm.com>
> Tested-by: Wei Yang <weiyang at linux.vnet.ibm.com>

Applied.