linux-kernel - Re: [PATCH] pch_gbe: Fix the issue which a driver locks when rx offload is set by ethtool

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Message-Id: <20110208.225702.104076116.davem@davemloft.net>
Date:	Tue, 08 Feb 2011 22:57:02 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	toshiharu-linux@....okisemi.com
Cc:	netdev@...r.kernel.org, tomoya-linux@....okisemi.com,
	qi.wang@...el.com, yong.y.wang@...el.com,
	andrew.chih.howe.khor@...el.com, joel.clark@...el.com,
	kok.howg.ewe@...el.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] pch_gbe: Fix the issue which a driver locks when rx
 offload is set by ethtool

From: "Toshiharu Okada" <toshiharu-linux@....okisemi.com>
Date: Wed, 9 Feb 2011 11:04:11 +0900

> From: David Miller <davem@...emloft.net>
> Date: Tue, 08 Feb 2011 16:40:30 -0800 (PST)
> 
>>> @@ -531,12 +533,8 @@ void pch_gbe_reinit_locked(struct pch_gbe_adapter 
>>> *adapter)
>>>  {
>>>  struct net_device *netdev = adapter->netdev;
>>>
>>> - rtnl_lock();
>>> - if (netif_running(netdev)) {
>>> - pch_gbe_down(adapter);
>>> - pch_gbe_up(adapter);
>>> - }
>>> - rtnl_unlock();
>>> + pch_gbe_down(adapter);
>>> + pch_gbe_up(adapter);
>>
>>Are you sure you can just blindly delete the netif_running() check here?
> 
> Yes, sure.
> pch_gbe_reinit_locked() is called after confirming of netif_running() except 
> for pch_gbe_reset_task() function.
> This netif_running() was redundant.

Thanks for explaining, applied, thank you.
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