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Thu, 27 Feb 2020 10:05:54 +0000 From: laurentiu.tudor@nxp.com To: linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org Cc: robin.murphy@arm.com, lorenzo.pieralisi@arm.com, ard.biesheuvel@linaro.org, ioana.ciornei@nxp.com, diana.craciun@oss.nxp.com, maz@kernel.org, jon@solid-run.com, pankaj.bansal@nxp.com, makarand.pawagi@nxp.com, calvin.johnson@nxp.com, V.Sethi@nxp.com, cristian.sovaiala@nxp.com, Stuart.Yoder@arm.com, jeremy.linton@arm.com, joro@8bytes.org, tglx@linutronix.de, jason@lakedaemon.net Subject: [RFC PATCH 2/4] irqchip/fsl-mc: Change the way the IRQ domain is set for MC devices Date: Thu, 27 Feb 2020 12:05:40 +0200 Message-Id: <20200227100542.13819-2-laurentiu.tudor@nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200227100542.13819-1-laurentiu.tudor@nxp.com> References: <20200227100542.13819-1-laurentiu.tudor@nxp.com> Content-Type: text/plain; charset="us-ascii" X-ClientProxiedBy: AM6P192CA0056.EURP192.PROD.OUTLOOK.COM (2603:10a6:209:82::33) To AM6PR04MB5878.eurprd04.prod.outlook.com (2603:10a6:20b:a2::25) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from fsr-ub1864-101.ea.freescale.net (89.37.124.34) by AM6P192CA0056.EURP192.PROD.OUTLOOK.COM (2603:10a6:209:82::33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2750.18 via Frontend Transport; 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X-Microsoft-Antispam-Message-Info: 94tD5Tz2mP1GwIWNFOYGmveoIeY1tDG0PjGE9L5Q4j/LFZSqLSzVI9yPdu8uwp2Iywo/zpwQpNeC2b8rfG+ZQ0XN5uo8NfOL317FuoWtLbIWugYEAxbz9FHNSX+LpOqovx61Yrls2kKPCiXjtTTSU7higU+QCXwJbQ6yELK6b6suQ8Fj4cFXDqhixSuJ7RV+UQsrHatpJo1BrItudElvWxmb9Jh1gepb4AVPfHKz3O1Boo/bNqY3YZBxVdPw/qj9bsVAkZ3qLLA/Yi2Ubld6J0Z4SQKmkevFlAOdgFx+gl7QKIjRksu5laka5i/5Qiqfw3Ze7wNBGY5Pq7EBbTtxeX+MuvXilSbtMqff/SDJ2gy1HSiAr/cj54x42Vp7S6u0+j41nOVmI0Gwc9aJHezGIU53cD5XULljYFB0aUtwo5hGqPAftbYJosDy3vqbkfd6 X-MS-Exchange-AntiSpam-MessageData: YjOY6gmyIVrVtBwgHx7w5IEEAAQP5ep2vKoBWPc3yrAodetfvEycA4JuMJn7d9S+GCOnFr/LhaoSTR1MRLF58y/ofQq0nYO27oaM+1tdpX1WuQrk4jlMGtGn+weK5fMHFl7XgoJVpBPXEOvmakIJCg== X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 8d1a28c7-35ae-4b82-fe70-08d7bb6ca1b7 X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Feb 2020 10:05:54.2715 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: BLV64tTm6HjpFoXlXhtFVDwlVsu2b8TZ34TkpidSEKfjVKkeWwYosMMpGNFmrw/OcgfAEW3GMwDb1307UZQM5A== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM6PR04MB4312 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Diana Craciun In ACPI the MC bus is represented as a platform device and a named component in the IORT table. The mc-bus devices are discovered dynamically at runtime but they share the same fwnode with the parent platfom device. This patch changes the way the IRQ domain is searched for the MC devices: it takes the fwnode reference from the parent and uses the fwnode reference to find the MC IRQ domain. Signed-off-by: Diana Craciun --- drivers/bus/fsl-mc/fsl-mc-msi.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/bus/fsl-mc/fsl-mc-msi.c b/drivers/bus/fsl-mc/fsl-mc-msi.c index 8b9c66d7c4ff..1e2e97329781 100644 --- a/drivers/bus/fsl-mc/fsl-mc-msi.c +++ b/drivers/bus/fsl-mc/fsl-mc-msi.c @@ -182,16 +182,23 @@ int fsl_mc_find_msi_domain(struct device *mc_platform_dev, { struct irq_domain *msi_domain; struct device_node *mc_of_node = mc_platform_dev->of_node; + struct fwnode_handle *fwnode; - msi_domain = of_msi_get_domain(mc_platform_dev, mc_of_node, - DOMAIN_BUS_FSL_MC_MSI); + msi_domain = dev_get_msi_domain(mc_platform_dev); if (!msi_domain) { pr_err("Unable to find fsl-mc MSI domain for %pOF\n", mc_of_node); return -ENOENT; } + fwnode = msi_domain->fwnode; + msi_domain = irq_find_matching_fwnode(fwnode, DOMAIN_BUS_FSL_MC_MSI); + if (!msi_domain) { + pr_err("Unable to find fsl-mc MSI domain for %pOF\n", + mc_of_node); + return -ENOENT; + } *mc_msi_domain = msi_domain; return 0; } -- 2.17.1