Re: Kernel hang on OMAP3 based Beagle board, RTC issue?

[Koen Kooi <k.kooi@xxxxxxxxxxxxxxxxxx>]

Op 14 jul 2008, om 15:27 heeft Gadiyar, Anand het volgende geschreven:

> > diff --git a/arch/arm/mach-omap2/pm34xx.c
> > b/arch/arm/mach-omap2/pm34xx.c
> > index 202c269..308835b 100644
> > --- a/arch/arm/mach-omap2/pm34xx.c
> > +++ b/arch/arm/mach-omap2/pm34xx.c
> > @@ -380,11 +380,11 @@ int __init omap3_pm_init(void)
> >                goto err1;
> >        }
> >
> > -       ret = pwrdm_for_each(pwrdms_setup);
> > -       if (ret) {
> > -               printk(KERN_ERR "Failed to setup powerdomains\n");
> > -               goto err2;
> > -       }
> > +/*     ret = pwrdm_for_each(pwrdms_setup); */
> > +/*     if (ret) { */
> > +/*             printk(KERN_ERR "Failed to setup powerdomains\n"); */
> > +/*             goto err2; */
> > +/*     } */
> >
> >        mpu_pwrdm = pwrdm_lookup("mpu_pwrdm");
> >        if (mpu_pwrdm == NULL) {
>
> With this change, the hang does not happene. Applied this patch on  
> the current
> linux-omap tree.
>
> Thanks for the patch. It fixes the hang for now. I'm not sure why  
> the hang
> happens, but could it be because the SDP uses ttyS0 by default as the
> console while the Beagle is on ttyS2?

With that patch I still get the same behaviour:

serial console freezes, but responds to sysrq

I don't know if its related, but after the serial console freezes  
animated backgrounds in X stop animating, but will refresh if you  
press a key on the keyboard. The same effect can be seen with running  
'top' on the screen.
I'm using the CPUidle patches posted to the list a few weeks back +  
the timer suppression patch.

regards,

Koen

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