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=-10.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,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 45530C43612 for ; Thu, 27 Dec 2018 06:15:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 146F2214C6 for ; Thu, 27 Dec 2018 06:15:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="S5zyFKbv" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730217AbeL0GPL (ORCPT ); Thu, 27 Dec 2018 01:15:11 -0500 Received: from fllv0015.ext.ti.com ([198.47.19.141]:49914 "EHLO fllv0015.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729983AbeL0GOd (ORCPT ); Thu, 27 Dec 2018 01:14:33 -0500 Received: from fllv0035.itg.ti.com ([10.64.41.0]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id wBR6E2Ud077503; Thu, 27 Dec 2018 00:14:02 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1545891242; bh=KotTqQfhijDOPactJyxRFTQKuKTL+hLoGVA66ru3C0w=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=S5zyFKbvAdiWjuxDAOr4DgG2JkQdmzp8CPL3wLYwNxJcGkCvUoHxs3fBi1u6j4LJ2 wnBjNXxKp4hJqpN0+1K25CDgg2fub0OOLxbvdHiayHM05nV3QlsrQY/2KBmSnY3QFz haI23X0S9jmbhrD0l9etkSWsaRYQG10ll6U4ErHM= Received: from DFLE107.ent.ti.com (dfle107.ent.ti.com [10.64.6.28]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTPS id wBR6E2SH060161 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 27 Dec 2018 00:14:02 -0600 Received: from DFLE100.ent.ti.com (10.64.6.21) by DFLE107.ent.ti.com (10.64.6.28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1591.10; Thu, 27 Dec 2018 00:14:01 -0600 Received: from dflp32.itg.ti.com (10.64.6.15) by DFLE100.ent.ti.com (10.64.6.21) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1591.10 via Frontend Transport; Thu, 27 Dec 2018 00:14:01 -0600 Received: from uda0131933.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp32.itg.ti.com (8.14.3/8.13.8) with ESMTP id wBR6DRrF026064; Thu, 27 Dec 2018 00:13:58 -0600 From: Lokesh Vutla To: , Nishanth Menon , Santosh Shilimkar , Rob Herring , , CC: Linux ARM Mailing List , , Tero Kristo , Sekhar Nori , Device Tree Mailing List , Peter Ujfalusi , Lokesh Vutla Subject: [RFC PATCH v4 09/13] genirq/msi: Add support for .msi_unprepare callback Date: Thu, 27 Dec 2018 11:43:09 +0530 Message-ID: <20181227061313.5451-9-lokeshvutla@ti.com> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20181227061313.5451-1-lokeshvutla@ti.com> References: <20181227060829.5080-1-lokeshvutla@ti.com> <20181227061313.5451-1-lokeshvutla@ti.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add an optional callback .msi_unprepare to struct msi_domain_ops. This is used to clear any effect that is done by .msi_prepare callback. Signed-off-by: Lokesh Vutla --- include/linux/msi.h | 3 +++ kernel/irq/msi.c | 10 ++++++++++ 2 files changed, 13 insertions(+) diff --git a/include/linux/msi.h b/include/linux/msi.h index 474490826f8c..f35dd19f6c69 100644 --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -239,6 +239,8 @@ struct msi_domain_ops { int (*msi_prepare)(struct irq_domain *domain, struct device *dev, int nvec, msi_alloc_info_t *arg); + void (*msi_unprepare)(struct irq_domain *domain, int nvec, + void *data); void (*msi_finish)(msi_alloc_info_t *arg, int retval); void (*set_desc)(msi_alloc_info_t *arg, struct msi_desc *desc); @@ -319,6 +321,7 @@ void platform_msi_domain_free_irqs(struct device *dev); /* When an MSI domain is used as an intermediate domain */ int msi_domain_prepare_irqs(struct irq_domain *domain, struct device *dev, int nvec, msi_alloc_info_t *args); +void msi_domain_unprepare_irqs(struct irq_domain *domain, int nvec, void *data); int msi_domain_populate_irqs(struct irq_domain *domain, struct device *dev, int virq, int nvec, msi_alloc_info_t *args); struct irq_domain * diff --git a/kernel/irq/msi.c b/kernel/irq/msi.c index eb7459324113..1a1738690519 100644 --- a/kernel/irq/msi.c +++ b/kernel/irq/msi.c @@ -312,6 +312,16 @@ int msi_domain_prepare_irqs(struct irq_domain *domain, struct device *dev, return ret; } +void msi_domain_unprepare_irqs(struct irq_domain *domain, int nvec, + void *data) +{ + struct msi_domain_info *info = domain->host_data; + struct msi_domain_ops *ops = info->ops; + + if (ops->msi_unprepare) + ops->msi_unprepare(domain, nvec, data); +} + int msi_domain_populate_irqs(struct irq_domain *domain, struct device *dev, int virq, int nvec, msi_alloc_info_t *arg) { -- 2.19.2