netdev - Re: [PATCH resend 1/3] Revert "net: fec: fix missing napi

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Message-ID: <CAHrpEqR6b0dy1AWsakS-z7TCe5oz5NYdpo+JWSh+K+OzPLrCVw@mail.gmail.com>
Date:	Thu, 2 May 2013 09:51:00 +0800
From:	Frank Li <lznuaa@...il.com>
To:	Lucas Stach <l.stach@...gutronix.de>
Cc:	Robert Schwebel <r.schwebel@...gutronix.de>,
	David Miller <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"Frank.Li@...escale.com" <Frank.Li@...escale.com>,
	Fabio Estevam <festevam@...il.com>,
	Shawn Guo <shawn.guo@...aro.org>
Subject: Re: [PATCH resend 1/3] Revert "net: fec: fix missing napi_disable call"

2013/4/29 Lucas Stach <l.stach@...gutronix.de>:
> What is the exact situation which caused a
> deadlock here? I tried to see what's happening from your changelogs, but
> I'm not sure I can follow here. Wasn't the problem more of the used
> spinlocks not being IRQ-save and thus potentially creating a deadlock?

You can view below email thread.
http://www.spinics.net/lists/netdev/msg225240.html

The main problem network API use spin_lock_bh only now. So it does not
prefer use irq to handle skb process.
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