Re: MIPS: return after handling coprocessor 2 exception

[Ralf Baechle <ralf@linux-mips.org>]

On Fri, Jun 18, 2010 at 02:35:54PM +0400, Gleb O. Raiko wrote:

> >static int default_cu2_call(struct notifier_block *nfb, unsigned long action,
> >         void *data)
> >{
> >     ...
> >
> >     return NOTIFY_OK | NOTIFY_STOP;
> NOTIFY_STOP implies NOTIFY_OK, so
>       return NOTIFY_STOP;
> shall be enough.

Correct - I was thinking NOTIFY_STOP_MASK.

> >}
> 
> >The notifier list could also be used for example by perf
> 
> Or octeon cop2 handler that just sends NOTIFY_BAD for getting the
> same behavior.

Bad karma to return an error for where none happened.

  Ralf