From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754058AbaIVNEE (ORCPT ); Mon, 22 Sep 2014 09:04:04 -0400 Received: from gw-1.arm.linux.org.uk ([78.32.30.217]:37269 "EHLO pandora.arm.linux.org.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753644AbaIVNEC (ORCPT ); Mon, 22 Sep 2014 09:04:02 -0400 Date: Mon, 22 Sep 2014 14:03:51 +0100 From: Russell King - ARM Linux To: Wolfram Sang Cc: Anders Berg , devicetree , "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , linux-i2c@vger.kernel.org Subject: Re: [PATCH] i2c: axxia: Add I2C driver for AXM55xx Message-ID: <20140922130351.GL5182@n2100.arm.linux.org.uk> References: <1408967482-17723-1-git-send-email-anders.berg@avagotech.com> <20140920121242.GA3833@katana> <20140922095939.GB1406@katana> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140922095939.GB1406@katana> User-Agent: Mutt/1.5.19 (2009-01-05) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Sep 22, 2014 at 11:59:39AM +0200, Wolfram Sang wrote: > IRQ_NONE is "this interrupt wasn't by me" so for shared IRQs, the next > handler can check. Err, no it isn't. IRQ_NONE has no such effect. All handlers on a shared interrupt are always run irrespective of the return value from any particular interrupt handler. See kernel/irq/handle.c. -- FTTC broadband for 0.8mile line: currently at 9.5Mbps down 400kbps up according to speedtest.net.