Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751827AbbLRLDM (ORCPT ); Fri, 18 Dec 2015 06:03:12 -0500 Received: from foss.arm.com ([217.140.101.70]:39162 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751211AbbLRLDL (ORCPT ); Fri, 18 Dec 2015 06:03:11 -0500 Date: Fri, 18 Dec 2015 11:02:54 +0000 From: Mark Rutland To: MaJun Cc: Catalin.Marinas@arm.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Will.Deacon@arm.com, marc.zyngier@arm.com, jason@lakedaemon.net, tglx@linutronix.de, lizefan@huawei.com, huxinwei@huawei.com, dingtianhong@huawei.com, zhaojunhua@hisilicon.com, liguozhu@hisilicon.com, xuwei5@hisilicon.com, wei.chenwei@hisilicon.com, guohanjun@huawei.com, wuyun.wu@huawei.com, guodong.xu@linaro.org, haojian.zhuang@linaro.org, zhangfei.gao@linaro.org, usman.ahmad@linaro.org, klimov.linux@gmail.com, gabriele.paoloni@huawei.com Subject: Re: [PATCH v10 3/4] irqchip:create irq domain for each mbigen device Message-ID: <20151218110253.GC29219@leverpostej> References: <1450353397-47668-1-git-send-email-majun258@huawei.com> <1450353397-47668-4-git-send-email-majun258@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1450353397-47668-4-git-send-email-majun258@huawei.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1610 Lines: 48 On Thu, Dec 17, 2015 at 07:56:36PM +0800, MaJun wrote: > From: Ma Jun > > For peripheral devices which connect to mbigen,mbigen is a interrupt > controller. So, we create irq domain for each mbigen device and add > mbigen irq domain into irq hierarchy structure. > > Signed-off-by: Ma Jun > --- > drivers/irqchip/irq-mbigen.c | 138 ++++++++++++++++++++++++++++++++++++++++++ > 1 files changed, 138 insertions(+), 0 deletions(-) [...] > +static int mbigen_domain_translate(struct irq_domain *d, > + struct irq_fwspec *fwspec, > + unsigned long *hwirq, > + unsigned int *type) > +{ > + if (is_of_node(fwspec->fwnode)) { > + if (fwspec->param_count != 2) > + return -EINVAL; > + > + if ((fwspec->param[0] > MAXIMUM_IRQ_PIN_NUM) || > + (fwspec->param[0] < RESERVED_IRQ_PER_MBIGEN_CHIP)) > + return -EINVAL; > + else > + *hwirq = fwspec->param[0]; > + > + /* If there is no valid irq type, just use the default type */ > + if ((fwspec->param[1] == IRQ_TYPE_EDGE_RISING) || > + (fwspec->param[1] == IRQ_TYPE_LEVEL_HIGH)) > + *type = fwspec->param[1]; > + else > + *type = IRQ_TYPE_NONE; That does not seem like a good idea. The binding requires one of two types, and the DT is clearly wrong in the else case. I think for the else case we should return -EINVAL. Thanks, Mark. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/