From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f67.google.com ([74.125.82.67]:33986 "EHLO mail-wm0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752963AbdDJNJ4 (ORCPT ); Mon, 10 Apr 2017 09:09:56 -0400 Received: by mail-wm0-f67.google.com with SMTP id x75so9576365wma.1 for ; Mon, 10 Apr 2017 06:09:56 -0700 (PDT) Subject: Re: [patch added to 3.12-stable] MIPS: Lantiq: Fix cascaded IRQ setup To: Amit Pundir References: <20170410125930.26495-1-jslaby@suse.cz> <20170410125930.26495-47-jslaby@suse.cz> Cc: stable@vger.kernel.org, Felix Fietkau , linux-mips@linux-mips.org, James Hogan From: Jiri Slaby Message-ID: <9a7aaf66-96bd-9440-6f8c-9365654a5526@suse.cz> Date: Mon, 10 Apr 2017 15:09:54 +0200 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: stable-owner@vger.kernel.org List-ID: On 04/10/2017, 03:07 PM, Amit Pundir wrote: > Hi Jiri, > > On 10 April 2017 at 18:29, Jiri Slaby wrote: >> From: Felix Fietkau >> >> This patch has been added to the 3.12 stable tree. If you have any >> objections, please let us know. >> >> =============== >> >> commit 6c356eda225e3ee134ed4176b9ae3a76f793f4dd upstream. >> >> With the IRQ stack changes integrated, the XRX200 devices started >> emitting a constant stream of kernel messages like this: >> >> [ 565.415310] Spurious IRQ: CAUSE=0x1100c300 >> >> This is caused by IP0 getting handled by plat_irq_dispatch() rather than >> its vectored interrupt handler, which is fixed by commit de856416e714 >> ("MIPS: IRQ Stack: Fix erroneous jal to plat_irq_dispatch"). >> >> Fix plat_irq_dispatch() to handle non-vectored IPI interrupts correctly >> by setting up IP2-6 as proper chained IRQ handlers and calling do_IRQ >> for all MIPS CPU interrupts. >> >> Signed-off-by: Felix Fietkau >> Acked-by: John Crispin >> Cc: linux-mips@linux-mips.org >> Patchwork: https://patchwork.linux-mips.org/patch/15077/ >> [james.hogan@imgtec.com: tweaked commit message] >> Signed-off-by: James Hogan >> Signed-off-by: Amit Pundir > > Just to let you know that I cherry-picked this patch from LEDE source > for 4.4 and 4.9 stable but James pointed out that this patch fixes a > Mips IRQ bug introduced in later (4.10+) kernels. So we dropped it > from 4.4 and 4.9 plan as such. Thanks. Dropped too. Thanks! -- js suse labs