RE: mpc83xx_restart() buggy

-----Original Message-----
From:=20
linuxppc-dev-bounces+joakim.tjernlund=3Dtransmode.se@ozlabs.org=20
[mailto:linuxppc-dev-bounces+joakim.tjernlund=3Dtransmode.se@ozl
abs.org] On Behalf Of Scott Wood
Sent: 30 December 2006 00:04
To: Kumar Gala
Cc: Tjernlund; 'linuxppc-dev'
Subject: Re: mpc83xx_restart() buggy
=20
Kumar Gala wrote:

quoted

On Dec 27, 2006, at 6:45 PM, Tjernlund wrote:

quoted

mpc83xx_restart() uses ioremap(), which doesn't like
beeing called while in IRQ context.

Calling mpc83xx_restart() in IRQ context yields OOPS
which calls mpc83xx_restart() again and the loop never
termintes.

=20
This is interesting, I know I've seen restart work properly w/o an =20
oops.  How are you causing the restart?

=20
sysrq-b triggers it, as probably does crashing from an=20
interrupt handler=20
with panic_timeout nonzero.  You'll need CONFIG_DEBUG_SPINLOCK_SLEEP=20
turned on, of course.
=20
-Scott

Any chance for a fix soon?

 Jocke