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Wed, 26 Oct 2022 00:06:24 -0700 Received: from rnnvmail205.nvidia.com (10.129.68.10) by rnnvmail201.nvidia.com (10.129.68.8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.29; Wed, 26 Oct 2022 00:06:23 -0700 Received: from pshete-ubuntu.nvidia.com (10.127.8.14) by mail.nvidia.com (10.129.68.10) with Microsoft SMTP Server id 15.2.986.29 via Frontend Transport; Wed, 26 Oct 2022 00:06:20 -0700 From: Prathamesh Shete To: , , , , , , CC: , , , Manish Bhardwaj Subject: [PATCH v2] gpio: tegra186: Check PMC driver status before any request Date: Wed, 26 Oct 2022 12:36:14 +0530 Message-ID: <20221026070614.24446-1-pshete@nvidia.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6NAM11FT066:EE_|CH0PR12MB5041:EE_ X-MS-Office365-Filtering-Correlation-Id: 1fafa4df-d1c0-42aa-0ec3-08dab7209ed0 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Signed-off-by: Manish Bhardwaj Signed-off-by: Prathamesh Shete Reviewed-by: Linus Walleij Acked-by: Thierry Reding --- drivers/gpio/gpio-tegra186.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/drivers/gpio/gpio-tegra186.c b/drivers/gpio/gpio-tegra186.c index 54d9fa7da9c1..b99756037ed4 100644 --- a/drivers/gpio/gpio-tegra186.c +++ b/drivers/gpio/gpio-tegra186.c @@ -896,11 +896,15 @@ static int tegra186_gpio_probe(struct platform_device *pdev) np = of_find_matching_node(NULL, tegra186_pmc_of_match); if (np) { - irq->parent_domain = irq_find_host(np); - of_node_put(np); - - if (!irq->parent_domain) - return -EPROBE_DEFER; + if (of_device_is_available(np)) { + irq->parent_domain = irq_find_host(np); + of_node_put(np); + + if (!irq->parent_domain) + return -EPROBE_DEFER; + } else { + of_node_put(np); + } } irq->map = devm_kcalloc(&pdev->dev, gpio->gpio.ngpio,