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

From: Ingo Molnar
Date: Mon Dec 11 2006 - 11:01:00 EST



* Daniel Walker <dwalker@xxxxxxxxxx> wrote:

> On Mon, 2006-12-11 at 10:27 +0100, Ingo Molnar wrote:
> > * Daniel Walker <dwalker@xxxxxxxxxx> wrote:
> >
> > > Sent this a long time ago, still exists.
> > >
> > > Signed-Off-By: Daniel Walker <dwalker@xxxxxxxxxx>
> >
> > 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.

ok, i've applied your patch.

Ingo
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