Re: [PATCH] Added MIPS RM9K watchdog driver

[Thomas Koeller <thomas@koeller.dyndns.org>]

On Friday 11 August 2006 22:07, Alan Cox wrote:
> > +   printk(KERN_WARNING "%s: watchdog expired - resetting system\n",
> > +          wdt_gpi_name);
> > +
> > +   *(volatile char *) flagaddr |= 0x01;
> > +   *(volatile char *) resetaddr = powercycle ? 0x01 : 0x2;
> > +   iob();
> > +   while (1) continue;
>
> cpu_relax();

I tried to find out about the purpose of cpu_relax(). On MIPS, at least,
it maps to barrier(). I do not quite understand why I would need a
barrier() in this place. Would you, or someone else, care to
enlighten me?

I am sending a revised patch in a separate mail.

Thomas
-- 
Thomas Koeller
thomas@koeller.dyndns.org