Re: [Adi-linux-docs] [PATCH] net: ethernet : stmicro: fixed power suspend and resume failure in stmmac driver

[David M. <da...@da...>]

From: Hao Liang <hli...@gm...>
Date: Wed, 1 Oct 2014 14:08:28 +0800

> I double-check my patch and the ->mac->xxx calls are still under the lock.
> I think that lock is trying to protect priv struct and related data, so i
> just remove some functions have no bearing on priv struct.

It's preventing parallel invocations of the ->mac->xxx calls.

The other instances are in device open/close, where RTNL semaphore is
held, and no other code paths in the driver can be active.

You need the lock.