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From: Arnd Bergmann <arnd@arndb.de>
To: Ira Snyder <iws@ovro.caltech.edu>
Cc: linuxppc-dev@ozlabs.org,
	Stephen Hemminger <shemminger@vyatta.com>,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	Jan-Bernd Themann <THEMANN@de.ibm.com>
Subject: Re: [PATCH RFC v2] net: add PCINet driver
Date: Wed, 5 Nov 2008 14:19:52 +0100	[thread overview]
Message-ID: <200811051419.53194.arnd@arndb.de> (raw)
In-Reply-To: <20081104222927.GE4641@ovro.caltech.edu>

On Tuesday 04 November 2008, Ira Snyder wrote:

> So, since interrupts are disabled while my interrupt handler is running,
> I think I should be able to use spin_lock() and spin_unlock(), correct?

yes.

> But sparse gives me the following warning:
> wqt.c:185:9: warning: context imbalance in 'wqt_interrupt': wrong count at exit
> wqt.c:185:9:    context 'lock': wanted 0, got 1
> 
> If I'm using spin_lock_irqsave() and spin_lock_irqrestore() I do not get
> the same warnings. Therefore I must have some misunderstanding :)


I've seen something like that before, I think it was a bug either in
sparse or in the powerpc platform code. Try updating both the kernel
and sparse and see if it still happens.

	Arnd <><

  reply	other threads:[~2008-11-05 13:20 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-29 20:20 Ira Snyder
2008-10-29 20:25 ` Stephen Hemminger
2008-10-29 20:50   ` Ira Snyder
2008-10-29 20:54     ` Scott Wood
2008-10-29 21:13       ` Ira Snyder
2008-10-29 21:43         ` Matt Sealey
2008-10-29 22:22           ` Ira Snyder
2008-11-04 12:09 ` Arnd Bergmann
2008-11-04 17:34   ` Ira Snyder
2008-11-04 20:23     ` Arnd Bergmann
2008-11-04 21:25       ` Ira Snyder
2008-11-05 13:50         ` Arnd Bergmann
2008-11-05 19:32           ` Ira Snyder
2008-11-04 22:29       ` Ira Snyder
2008-11-05 13:19         ` Arnd Bergmann [this message]
2008-11-05 19:18           ` Ira Snyder

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