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From: Tony Lindgren <tony@atomide.com>
To: David Brownell <david-b@pacbell.net>
Cc: "Stanley.Miao" <stanley.miao@windriver.com>, linux-omap@vger.kernel.org
Subject: Re: [PATCH] OMAP: Fix McBSP spin_lock deadlock.
Date: Wed, 5 Nov 2008 17:16:22 -0800	[thread overview]
Message-ID: <20081106011621.GJ21736@atomide.com> (raw)
In-Reply-To: <200811051546.51707.david-b@pacbell.net>

* David Brownell <david-b@pacbell.net> [081105 15:53]:
> On Wednesday 05 November 2008, Stanley.Miao wrote:
> > @@ -333,7 +333,8 @@ struct omap_mcbsp_platform_data {
> >         u8 dma_rx_sync, dma_tx_sync;
> >         u16 rx_irq, tx_irq;
> >         struct omap_mcbsp_ops *ops;
> > -       char const *clk_name;
> > +       char const *ick_name;
> > +       char const *fck_name;
> >  };
> >  
> >  struct omap_mcbsp {
> 
> I thought the idea was to fix this using the clock aliasing
> facility ... so that the mcbsp driver would just
> 
> 	ick = clk_get(dev, "ick");
> 	fck = clk_get(dev, "fck");
> 
> (with IS_ERR checks of course) and the platform data would
> no longer need to hold those names.
> 
> That approach can work on OMAP1 too ... I think this patch
> breaks OMAP1 boards.

Russell also has some ideas, so despite the nasty bug, let's put
the clock aliasing and virtual clocks stuff on hold for a little
while. Meanwhile, maybe we can just add some function for the
virtual clock that does not cause the recursion?

Tony
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  reply	other threads:[~2008-11-06  1:16 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-11-05 12:00 [PATCH] OMAP: Fix McBSP spin_lock deadlock Stanley.Miao
2008-11-05 23:46 ` David Brownell
2008-11-06  1:16   ` Tony Lindgren [this message]
2008-11-06  1:49     ` stanley.miao
2008-11-06 12:41     ` stanley.miao

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