From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from linux-sh.org (linux-sh.org [111.68.239.195]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id AB3A32C031F for ; Tue, 5 Mar 2013 13:41:46 +1100 (EST) Date: Tue, 5 Mar 2013 11:41:12 +0900 From: Paul Mundt To: Mike Qiu Subject: Re: [PATCH 2/3] irq: Add hw continuous IRQs map to virtual continuous IRQs support Message-ID: <20130305024110.GB14275@linux-sh.org> References: <1358235536-32741-1-git-send-email-qiudayu@linux.vnet.ibm.com> <1358235536-32741-3-git-send-email-qiudayu@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <1358235536-32741-3-git-send-email-qiudayu@linux.vnet.ibm.com> Cc: tglx@linutronix.de, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Tue, Jan 15, 2013 at 03:38:55PM +0800, Mike Qiu wrote: > Adding a function irq_create_mapping_many() which can associate > multiple MSIs to a continous irq mapping. > > This is needed to enable multiple MSI support for pSeries. > > +int irq_create_mapping_many(struct irq_domain *domain, > + irq_hw_number_t hwirq_base, int count) > +{ Other than the other review comments already made, I think you can simplify this considerably by simply doing what irq_create_strict_mappings() does, and relaxing the irq_base requirements. In any event, as you are creating a new interface, I don't think you want to carry around half of the legacy crap that irq_create_mapping() has to deal with. We made the decision to avoid this with irq_create_strict_mappings() intentionally, too.