[PATCH] gpio: tegra186: Check PMC driver status before any request

From: Prathamesh Shete <pshete@nvidia.com>
To: <linus.walleij@linaro.org>, <brgl@bgdev.pl>,
	<thierry.reding@gmail.com>, <jonathanh@nvidia.com>,
	<linux-tegra@vger.kernel.org>, <linux-gpio@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>
Cc: <smangipudi@nvidia.com>, <pshete@nvidia.com>,
	Manish Bhardwaj <mbhardwaj@nvidia.com>
Subject: [PATCH] gpio: tegra186: Check PMC driver status before any request
Date: Tue, 6 Jun 2023 12:47:17 +0530	[thread overview]
Message-ID: <20230606071717.8088-1-pshete@nvidia.com> (raw)

This patch fixes the issue where even if PMC driver status is
disabled still we are trying to look up for the IRQ domain
that PMC driver would've registered if it had been enabled.

Signed-off-by: Manish Bhardwaj <mbhardwaj@nvidia.com>
Signed-off-by: Prathamesh Shete <pshete@nvidia.com>
---
 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 464b0ea3b6f1..80d08ddde40e 100644
--- a/drivers/gpio/gpio-tegra186.c
+++ b/drivers/gpio/gpio-tegra186.c
@@ -964,11 +964,15 @@ 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,
-- 
2.17.1

