linux-kernel - Re: sound/pci/hda/intel

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Date:	Thu, 31 Aug 2006 15:39:29 +0200
From:	Pavel Machek <pavel@...e.cz>
To:	Takashi Iwai <tiwai@...e.de>
Cc:	Andrew Morton <akpm@...l.org>,
	kernel list <linux-kernel@...r.kernel.org>, perex@...e.cz,
	alsa-devel@...a-project.org, pshou@...ltek.com.tw
Subject: Re: sound/pci/hda/intel_hda: small cleanups

Hi!

> > @@ -271,8 +272,8 @@ struct azx_dev {
> >  	/* for sanity check of position buffer */
> >  	unsigned int period_intr;
> >  
> > -	unsigned int opened: 1;
> > -	unsigned int running: 1;
> > +	unsigned int opened :1;
> > +	unsigned int running :1;
> >  };
> >  
> >  /* CORB/RIRB */
> > @@ -330,8 +331,8 @@ struct azx {
> >  
> >  	/* flags */
> >  	int position_fix;
> > -	unsigned int initialized: 1;
> > -	unsigned int single_cmd: 1;
> > +	unsigned int initialized :1;
> > +	unsigned int single_cmd :1;
> >  };
> 
> Any official standard reference for bit-field expressions?

Well, logically : belongs to the 1, and include/linux understands it
like that...

> >  /* driver types */
> > @@ -642,14 +643,14 @@ static int azx_reset(struct azx *chip)
> >  	azx_writeb(chip, GCTL, azx_readb(chip, GCTL) | ICH6_GCTL_RESET);
> >  
> >  	count = 50;
> > -	while (! azx_readb(chip, GCTL) && --count)
> > +	while (!azx_readb(chip, GCTL) && --count)
> >  		msleep(1);
> 
> Hm, it looks rather like a personal preference.
> IMHO, it's harder to read without space...

Well, core parts (sched.c?) use it without the space, and I'd say (!
expression) is unusual in kernel, but no, could not find it codified.

> I'll fix the volatile things separately.

Thanks.
								Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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