On Wednesday 04 June 2008 08:28:07 am Mark Brown wrote:
> On Wed, Jun 04, 2008 at 02:01:55PM +0200, Takashi Iwai wrote:
> > Geoffrey Wossum wrote:
> > > +struct at32_ssc_info {
> > > + char *name;
> > > + struct ssc_device *ssc;
> > > + spinlock_t lock; /* lock for dir_mask */
> >
> > Just wondering whether this lock is really needed.
> > Is it really racy?
>
> Bidirectional ports could be in two PCMs and have configuration
> happening simultaneously.
To be honest, the AT91 code I was porting to the AT32 had this lock. I think
Mark is correct, so it's probably good I wasn't writing this code from
scratch since I might have missed this detail on the first pass.
---
Geoffrey
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