Re: sound/pci/hda/intel_hda: small cleanups
From: Pavel Machek
Date: Thu Aug 31 2006 - 18:26:42 EST
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...
>
> OK, "xxx :1;" looks major, too :)
>
> > > > /* 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 don't mind much to change it now, but hopefully people won't be too
> strict about this rule...
Thanks.
> > > I'll fix the volatile things separately.
>
> The access is really over RAM, not MMIO. So it should be OK to access
> in that way. But volatile seems superfluous. I'll get rid of it.
Sorry, I understood the code well enough to sense something is wrong,
but not enough to know how to fix it.
> Also, msleep() in the removal should be synchronize_irq().
Good.
> I'll fix these changes and commit with your space fixes to ALSA tree.
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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