linux-kernel - Re: [patch 4/7] ps3: Storage Driver Probing

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Date:	Sat, 26 May 2007 10:56:32 +0200 (CEST)
From:	Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
cc:	Arnd Bergmann <arnd@...db.de>, linuxppc-dev@...abs.org,
	linux-kernel@...r.kernel.org
Subject: Re: [patch 4/7] ps3: Storage Driver Probing

On Sat, 26 May 2007, Benjamin Herrenschmidt wrote:
> On Fri, 2007-05-25 at 18:18 +0200, Arnd Bergmann wrote:
> > > +static u64 ps3stor_wait_for_completion(u64 devid, u64 tag,
> > > +                                    unsigned int timeout)
> > > +{
> > > +     unsigned int retries = 0;
> > > +     u64 res = -1, status;
> > > +
> > > +     for (retries = 0; retries < timeout; retries++) {
> > > +             res =
> > lv1_storage_check_async_status(NOTIFICATION_DEVID, tag,
> > > +                                                  &status);
> > > +             if (!res)
> > > +                     break;
> > > +             set_current_state(TASK_INTERRUPTIBLE);
> > > +             schedule_timeout(1);
> > > +     }
> > 
> > Any reason not to use msleep(1) instead of the schedule_timeout? 
> 
> Both look equally ugly though... do you really have to poll ?

The special notification device (NOTIFICATION_DEVID = -1) is not in the
repository and AFAIK it doesn't have an interrupt attached to it.
Note that this is used during probing only.

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- Sony Network and Software Technology Center Europe (NSCE)
Geert.Uytterhoeven@...ycom.com ------- The Corporate Village, Da Vincilaan 7-D1
Voice +32-2-7008453 Fax +32-2-7008622 ---------------- B-1935 Zaventem, Belgium
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