netdev - Re: [PATCH / RFC 0/2] spinlocks fixup in fec / m68knommu driver

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Message-ID: <47EDA73A.5060902@pobox.com>
Date:	Fri, 28 Mar 2008 22:19:38 -0400
From:	Jeff Garzik <jgarzik@...ox.com>
To:	Sebastian Siewior <bigeasy@...utronix.de>
CC:	uclinux-dev@...inux.org, netdev@...r.kernel.org,
	Greg Ungerer <gerg@...inux.org>
Subject: Re: [PATCH / RFC 0/2] spinlocks fixup in fec / m68knommu driver

Sebastian Siewior wrote:
> I got into this after turning on spinlock debugging.
> 
> Jeff: The dev->hard_start_xmit callback is always called from softirq
> context so it is save to use spin_lock_irq(), right?

Some drivers do that, and it's fine.  But be aware spin_lock_irqsave() 
may be required for edge cases like netconsole.


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