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Subject: Re: Regression in 32-bit ppc kernel
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Andreas Schwab <schwab@linux-m68k.org>
Date: Sun, 29 Apr 2012 08:48:08 +1000
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Cc: linuxppc-dev@lists.ozlabs.org, Paul Mackerras <paulus@samba.org>,
 LKML <linux-kernel@vger.kernel.org>, Larry Finger <Larry.Finger@lwfinger.net>
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On Sat, 2012-04-28 at 20:23 +0200, Andreas Schwab wrote:
> Larry Finger <Larry.Finger@lwfinger.net> writes:
> 
> > I have done a little more debugging. The problem is definitely coming from
> > drivers/tty/serial/pmac_zilog.c. I am getting ChanB interrupts while open,
> > which causes the following code segment to return IRQ_NONE:
> >
> >        if (r3 & (CHBEXT | CHBTxIP | CHBRxIP)) {
> >                if (!ZS_IS_OPEN(uap_a)) {
> 
> s/uap_a/uap_b/?

Good catch... Let's see if that fixes it for Larry...

Cheers,
Ben.