From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0BC29C43466 for ; Fri, 18 Sep 2020 11:23:04 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A14542311A for ; Fri, 18 Sep 2020 11:23:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="b02TQIcC" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A14542311A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-snps-arc-bounces+linux-snps-arc=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-ID:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=mqxyCgI9KasHaPqwTwfXOilnF+yhk86YsE2B2+kmTOE=; b=b02TQIcCisithfEXYgnIappGb 9IfL9QcI+IImFrT9EeevgftqpVNPPOuafTP/sN6sRBrPreAN+ult2+QG44R2ncs+4xrwjEZp4MwiS J31pXJmpF/GPDOvDSJXBlzkh+Merb5Sh1+9L/m6hme4E3HYGGwLCvvvFTVb4RPC/pMGnp10mYFOUZ S+92ecrA/mj46C3+YaZq4RAV6dt7ewNkSTyMvBtpmR34SXlcCvv+C7OXW/tRCbUSTXGnK65zw6UCU j+abL7Ls7qXPljqWIMy+GMF1qRxu4Wz0AnToGW/ASaH9tSpIkkSAywAaY2VQM6PAd3XG9U7Mg9TXS 9rfPYGipA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kJETm-0001xM-JK; Fri, 18 Sep 2020 11:23:02 +0000 Received: from szxga07-in.huawei.com ([45.249.212.35] helo=huawei.com) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kJETj-0001ut-RD for linux-snps-arc@lists.infradead.org; Fri, 18 Sep 2020 11:23:01 +0000 Received: from DGGEMS405-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id 191923A6D08B770DF102; Fri, 18 Sep 2020 19:22:52 +0800 (CST) Received: from thunder-town.china.huawei.com (10.174.177.253) by DGGEMS405-HUB.china.huawei.com (10.3.19.205) with Microsoft SMTP Server id 14.3.487.0; Fri, 18 Sep 2020 19:22:45 +0800 From: Zhen Lei To: Thomas Gleixner , Jason Cooper , Marc Zyngier , Rob Herring , "Alexey Brodkin" , Vineet Gupta , devicetree , linux-snps-arc , linux-kernel Subject: [PATCH v5 1/6] genirq: define an empty function set_handle_irq() if !GENERIC_IRQ_MULTI_HANDLER Date: Fri, 18 Sep 2020 19:21:57 +0800 Message-ID: <20200918112202.3418-2-thunder.leizhen@huawei.com> X-Mailer: git-send-email 2.26.0.windows.1 In-Reply-To: <20200918112202.3418-1-thunder.leizhen@huawei.com> References: <20200918112202.3418-1-thunder.leizhen@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.174.177.253] X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200918_072300_138794_90F3DCC5 X-CRM114-Status: GOOD ( 10.13 ) X-BeenThere: linux-snps-arc@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on Synopsys ARC Processors List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Haoyu Lv , Kefeng Wang , Sebastian Hesselbarth , Libin , Zhen Lei Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+linux-snps-arc=archiver.kernel.org@lists.infradead.org To avoid compilation error if an irqchip driver references the function set_handle_irq() but may not select GENERIC_IRQ_MULTI_HANDLER on some systems. For example, the Synopsys DesignWare APB interrupt controller (dw_apb_ictl) is used as the secondary interrupt controller on arc, csky, arm64, and most arm32 SoCs, and it's also used as the primary interrupt controller on Hisilicon SD5203 (an arm32 SoC). The latter need to use set_handle_irq() to register the top-level IRQ handler, but this multi irq handler registration mechanism is not implemented on arc system. The input parameter "handle_irq" maybe defined as static and only set_handle_irq() references it. This will trigger "defined but not used" warning. So add "(void)handle_irq" to suppress it. Signed-off-by: Zhen Lei --- include/linux/irq.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/irq.h b/include/linux/irq.h index 1b7f4dfee35b397..b167baef88c0b43 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -1252,6 +1252,12 @@ void irq_matrix_free(struct irq_matrix *m, unsigned int cpu, * top-level IRQ handler. */ extern void (*handle_arch_irq)(struct pt_regs *) __ro_after_init; +#else +#define set_handle_irq(handle_irq) \ + do { \ + (void)handle_irq; \ + WARN_ON(1); \ + } while (0) #endif #endif /* _LINUX_IRQ_H */ -- 1.8.3 _______________________________________________ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc