Re: [PATCH 01/16 v3] pmac_zilog: fix unexpected irq

Benjamin Herrenschmidt
2011-12-08T19:44:09Z

On Thu, 2011-12-08 at 22:26 +1100, Finn Thain wrote:
>
> Maybe the modem wants a transition on DTR or similar, but it hasn't had
> time to initialise when that happens during SCC resumption.
>
> If so, calling pmz_shutdown() then pmz_startup() from the tail of
> pmz_resume() without delay should probably fail to revive it...

Well, we power the modem down and back up... but it's possible that we
fail to re-enable something, I'll check. That used to work (at least
with macserial, maybe I never tried this specific torture with pmz...).
I'll figure it out eventually.

Cheers,
Ben.