From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753954AbZBQOn0 (ORCPT ); Tue, 17 Feb 2009 09:43:26 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751833AbZBQOnR (ORCPT ); Tue, 17 Feb 2009 09:43:17 -0500 Received: from gate.crashing.org ([63.228.1.57]:50983 "EHLO gate.crashing.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751145AbZBQOnR (ORCPT ); Tue, 17 Feb 2009 09:43:17 -0500 Cc: "" , linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org Message-Id: <22854A2F-2FBD-4F1A-B623-DB5C91E97509@kernel.crashing.org> From: Kumar Gala To: Li Yang In-Reply-To: <2a27d3730902170638h43724c03k6b50843158842e1e@mail.gmail.com> Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v930.3) Subject: Re: [PATCH] fix the interrupt loss problem on powerpc IPIC (2.6.23) Date: Tue, 17 Feb 2009 08:43:03 -0600 References: <76C7F485-EF75-4B83-B673-564E6243C7C6@kernel.crashing.org> <2a27d3730902170638h43724c03k6b50843158842e1e@mail.gmail.com> X-Mailer: Apple Mail (2.930.3) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Feb 17, 2009, at 8:38 AM, Li Yang wrote: > On Tue, Feb 17, 2009 at 10:12 PM, Kumar Gala > wrote: >> >> On Feb 17, 2009, at 6:44 AM, > > >> wrote: >> >>> From: Da Yu >>> Date: Tue, 17 Feb 2009 19:58:20 +0800 >>> Subject: [PATCH] fix the interrupt loss problem on powerpc IPIC >>> (2.6.23) >>> >>> Signed-off-by: Da Yu >>> --- >> >> Please provide a bit more description as to why this fixes the issue. > > The pending register is write 1 clear. If there are more than one > external interrupts pending at the same time, acking the first > interrupt will also clear other interrupt pending bits. That will > cause loss of interrupt. > > - Leo Thanks. That should be included in the commit message. - k