linux-kernel - Re: [PATCH] mfd: Convert pcf50633 to use new register map API

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Date:	Mon, 22 Aug 2011 11:10:27 +0200
From:	Samuel Ortiz <sameo@...ux.intel.com>
To:	Lars-Peter Clausen <lars@...afoo.de>
Cc:	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	linux-kernel@...r.kernel.org, patches@...nsource.wolfsonmicro.com
Subject: Re: [PATCH] mfd: Convert pcf50633 to use new register map API

On Mon, Aug 22, 2011 at 11:03:13AM +0200, Samuel Ortiz wrote:
> Hi Lars,
> 
> On Mon, Aug 08, 2011 at 05:29:27AM +0200, Lars-Peter Clausen wrote:
> > 
> > >  #include <linux/mfd/pcf50633/core.h>
> > >  
> > [...]
> > >  /* Read a block of up to 32 regs  */
> > >  int pcf50633_read_block(struct pcf50633 *pcf, u8 reg,
> > >  					int nr_regs, u8 *data)
> > >  {
> > > -	int ret;
> > > -
> > > -	mutex_lock(&pcf->lock);
> > > -	ret = __pcf50633_read(pcf, reg, nr_regs, data);
> > > -	mutex_unlock(&pcf->lock);
> > > -
> > > -	return ret;
> > > +	return regmap_raw_read(pcf->regmap, reg, data, nr_regs);
> > >  }
> > >  EXPORT_SYMBOL_GPL(pcf50633_read_block);
> > 
> > There are callers which expect pcf50633_read_block to return the number of
> > bytes read. We could change the wrapper to return nr_regs if regmap_raw_read
> > returns 0. But I guess it is best to just update the callers. Incremental patch
> > which does this at the end of the mail.
> I'd like to apply Mark's patch and yours. Could you please remove the
> unnecesary printk in your patch and I'll go ahead.
Nevermind, I just saw Mark's updated patch.

Cheers,
Samuel.

-- 
Intel Open Source Technology Centre
http://oss.intel.com/
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