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

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Message-ID: <543F88AE.2020702@st.com>
Date:	Thu, 16 Oct 2014 10:58:22 +0200
From:	Giuseppe CAVALLARO <peppe.cavallaro@...com>
To:	<hliang1025@...il.com>
Cc:	David Miller <davem@...emloft.net>, <netdev@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>,
	<adi-linux-docs@...ts.sourceforge.net>
Subject: Re: [PATCH] net: ethernet : stmicro: fixed power suspend and resume
 failure in stmmac driver

Hello Hao Liang

On 10/1/2014 7:45 PM, David Miller wrote:
> From: Hao Liang <hliang1025@...il.com>
> 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.

Do you have a new patch for this problem after David's advice?

I am reviewing the patches sent some weeks ago for driver looking
and I can also try to fix this in case of you have no news.

Let me know,

Regards,
peppe

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