linux-kernel - Re: Regression in 32-bit ppc kernel

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Message-ID: <4F9C7A8E.1020009@lwfinger.net>
Date:	Sat, 28 Apr 2012 18:17:34 -0500
From:	Larry Finger <Larry.Finger@...inger.net>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
CC:	Andreas Schwab <schwab@...ux-m68k.org>,
	Paul Mackerras <paulus@...ba.org>,
	linuxppc-dev@...ts.ozlabs.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: Regression in 32-bit ppc kernel

On 04/28/2012 05:48 PM, Benjamin Herrenschmidt wrote:
> On Sat, 2012-04-28 at 20:23 +0200, Andreas Schwab wrote:
>> Larry Finger<Larry.Finger@...inger.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...

Yes, good catch by Andreas. That change does fix the problem.

Ben - Do you want to fix the typos for open/not open with the same patch?

Larry

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