From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Brown Subject: Re: [PATCH 1/1] Input: ab8500-ponkey: Make the distinction between DT and non-DT boots Date: Tue, 7 Aug 2012 18:03:34 +0100 Message-ID: <20120807170333.GV16861@opensource.wolfsonmicro.com> References: <1344256323-10484-1-git-send-email-lee.jones@linaro.org> <20120806081915.GA4518@core.coreip.homeip.net> <20120806153750.GI10524@gmail.com> <20120806160226.GF29272@sirena.org.uk> <20120807170129.GA3759@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from opensource.wolfsonmicro.com ([80.75.67.52]:58999 "EHLO opensource.wolfsonmicro.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755688Ab2HGRDg (ORCPT ); Tue, 7 Aug 2012 13:03:36 -0400 Content-Disposition: inline In-Reply-To: <20120807170129.GA3759@gmail.com> Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: Lee Jones Cc: Dmitry Torokhov , linus.walleij@stericsson.com, arnd@arndb.de, linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, STEricsson_nomadik_linux@list.st.com, linux-arm-kernel@lists.infradead.org On Tue, Aug 07, 2012 at 06:01:30PM +0100, Lee Jones wrote: > Okay, so I've just spent a small amount of time looking at this. I think > the best place for this would be in *_get_virq(), using the same logic that > selected a *_legacy or *_linear domain in the first place. The only thing > the domain can test for is the 'type' of domain and the requested IRQ. This > is where the issue lies. If a hwirq to virq conversion is requested, but a > virq is passed (which happens in the non-DT case) a WARN() is triggered > because the irq passed is bigger than first_irq + size. I think *_get_virq() > should ensure that only a hwirq is passed to irq_create_mapping(). > Let me know if you had other ideas. I'd expect your driver to always pass a hwirq into _get_virq() here.