[Fwd: Bug: 2.2.12 still hangs PPC after some PPP activity]

Takashi Oe toe at unlserve.unl.edu
Thu Sep 30 11:14:32 EST 1999

On Wed, 29 Sep 1999, Lou Langholtz wrote:

> Bummer...
> I just locked up my system and had to reboot. The above change then doesn't seem
> to fix the system hangs. On the other hand I never did see the "FB. overflow"
> message at least.
> I've been trying to search around HOWTOs and FAQs and mailing lists to get a
> better idea of wether nesting save_flags(flags); cli(); stuff...;
> save_flags(new_flags); cli(); restore_flags(new_flags); restore_flags(flags); is

Basically, cli() disables interrupts.  If the interrupts are disabled to
begin with, it amounts to nothing.  So, I think the nesting should cause
no harm.

> ever even ok. Haven't found anything conclusive yet though. Whatever the case, it
> doesn't seem like it'd be good practice anyhow. All the other serial support C
> files I've found so far seem to avoid this except for macserial.c.

Takashi Oe

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