linux-kernel - Re: [PATCH 1/1] Net: qla3xxx, remove sleeping in atomic

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Message-Id: <20090620.012107.75903817.davem@davemloft.net>
Date:	Sat, 20 Jun 2009 01:21:07 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jirislaby@...il.com
Cc:	linux-driver@...gic.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] Net: qla3xxx, remove sleeping in atomic

From: Jiri Slaby <jirislaby@...il.com>
Date: Fri, 19 Jun 2009 17:13:32 +0200

> Hi, we've found this sleep-inside-spinlock.
> 
> The fix below totally untested, please review carefully.
> 
> --
> 
> We cannot sleep in ql_reset_work under spinlock, unlock before sleep,
> relock after.
> 
> Signed-off-by: Jiri Slaby <jirislaby@...il.com>

This looks good.  The spinlock is just required to be held
around the register accesses.  It's going to drop the lock
as soon as the bits settle post-reset anyways and then the
driver goes off and modifies other state outside of the lock.

Applied, thanks!
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