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Received: from DU0PR04MB9417.eurprd04.prod.outlook.com (2603:10a6:10:358::11) by DUZPR04MB9846.eurprd04.prod.outlook.com (2603:10a6:10:4db::8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6652.27; Sat, 12 Aug 2023 12:19:27 +0000 Received: from DU0PR04MB9417.eurprd04.prod.outlook.com ([fe80::5d6a:ec53:f2a8:5b97]) by DU0PR04MB9417.eurprd04.prod.outlook.com ([fe80::5d6a:ec53:f2a8:5b97%6]) with mapi id 15.20.6652.025; Sat, 12 Aug 2023 12:19:27 +0000 From: "Peng Fan (OSS)" To: robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, frowand.list@gmail.com, andriy.shevchenko@linux.intel.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Peng Fan Subject: [PATCH] of/platform: increase refcount of fwnode Date: Sat, 12 Aug 2023 20:24:11 +0800 Message-Id: <20230812122411.3410399-1-peng.fan@oss.nxp.com> X-Mailer: git-send-email 2.37.1 X-ClientProxiedBy: SG2PR04CA0179.apcprd04.prod.outlook.com (2603:1096:4:14::17) To DU0PR04MB9417.eurprd04.prod.outlook.com (2603:10a6:10:358::11) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DU0PR04MB9417:EE_|DUZPR04MB9846:EE_ X-MS-Office365-Filtering-Correlation-Id: f1170313-a393-4404-cd01-08db9b2e5f34 X-MS-Exchange-SharedMailbox-RoutingAgent-Processed: True X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Then the out of tree jailhouse hypervisor enable/disable test will trigger kernel dump in of_overlay_remove, with the following sequence " of_changeset_revert(&overlay_changeset); of_changeset_destroy(&overlay_changeset); of_overlay_remove(&overlay_id); " So increase the refcount to avoid issues. Fixes: 0f8e5651095b ("of/platform: Propagate firmware node by calling device_set_node()") Signed-off-by: Peng Fan --- drivers/of/platform.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/of/platform.c b/drivers/of/platform.c index 0c3475e7d2ff..4659ff5a79c8 100644 --- a/drivers/of/platform.c +++ b/drivers/of/platform.c @@ -113,6 +113,7 @@ struct platform_device *of_device_alloc(struct device_node *np, const char *bus_id, struct device *parent) { + struct fwnode_handle *fwnode = of_fwnode_handle(np); struct platform_device *dev; int rc, i, num_reg = 0; struct resource *res; @@ -141,7 +142,7 @@ struct platform_device *of_device_alloc(struct device_node *np, } /* setup generic device info */ - device_set_node(&dev->dev, of_fwnode_handle(np)); + device_set_node(&dev->dev, fwnode_handle_get(fwnode)); dev->dev.parent = parent ? : &platform_bus; if (bus_id) @@ -221,6 +222,7 @@ static struct amba_device *of_amba_device_create(struct device_node *node, void *platform_data, struct device *parent) { + struct fwnode_handle *fwnode = of_fwnode_handle(node); struct amba_device *dev; int ret; @@ -239,7 +241,7 @@ static struct amba_device *of_amba_device_create(struct device_node *node, dev->dev.dma_mask = &dev->dev.coherent_dma_mask; /* setup generic device info */ - device_set_node(&dev->dev, of_fwnode_handle(node)); + device_set_node(&dev->dev, fwnode_handle_get(fwnode)); dev->dev.parent = parent ? : &platform_bus; dev->dev.platform_data = platform_data; if (bus_id)