linux-kernel - Re: [PATCH -rt][RESEND] spin lock imbalance in ibm emac

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Message-Id: <1165851624.7764.3.camel@imap.mvista.com>
Date:	Mon, 11 Dec 2006 07:40:24 -0800
From:	Daniel Walker <dwalker@...sta.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH -rt][RESEND] spin lock imbalance in ibm emac

On Mon, 2006-12-11 at 10:27 +0100, Ingo Molnar wrote:
> * Daniel Walker <dwalker@...sta.com> wrote:
> 
> > Sent this a long time ago, still exists. 
> > 
> > Signed-Off-By: Daniel Walker <dwalker@...sta.com>
> 
> hm, what does this do, and why isnt it upstream?


AFAIK, those locks are added in -rt . I'm not sure how they got in
there, but they fix that driver when running in a thread. The driver has
unsafe SMP locking, but the only system it runs on (PPC4xx) is
uniprocessor. So it's not broken upstream per se.

Dainel

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