linux-kernel - [PATCH 2/4] gpio: davinci: Handle the return value of davinci_gpio_irq

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Date:   Tue, 18 Jul 2017 16:27:14 +0530
From:   Keerthy <j-keerthy@...com>
To:     <linus.walleij@...aro.org>, <ssantosh@...nel.org>
CC:     <robh+dt@...nel.org>, <nsekhar@...com>, <s-anna@...com>,
        <fcooper@...com>, <linux-gpio@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <j-keerthy@...com>
Subject: [PATCH 2/4] gpio: davinci: Handle the return value of davinci_gpio_irq_setup function

Currently davinci_gpio_irq_setup return value is ignored. Handle the
return value appropriately.

Signed-off-by: Keerthy <j-keerthy@...com>
---
 drivers/gpio/gpio-davinci.c | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/drivers/gpio/gpio-davinci.c b/drivers/gpio/gpio-davinci.c
index 2c88054..932f270 100644
--- a/drivers/gpio/gpio-davinci.c
+++ b/drivers/gpio/gpio-davinci.c
@@ -233,15 +233,23 @@ static int davinci_gpio_probe(struct platform_device *pdev)
 		chips->regs[bank] = gpio_base + offset_array[bank];
 
 	ret = devm_gpiochip_add_data(dev, &chips->chip, chips);
+	if (ret)
+		goto err;
+
+	platform_set_drvdata(pdev, chips);
+	ret = davinci_gpio_irq_setup(pdev);
 	if (ret) {
-		ctrl_num = 0;
-		bank_base = 0;
-		return ret;
+		platform_set_drvdata(pdev, NULL);
+		goto err;
 	}
 
-	platform_set_drvdata(pdev, chips);
-	davinci_gpio_irq_setup(pdev);
 	return 0;
+
+err:
+	ctrl_num = 0;
+	bank_base = 0;
+
+	return ret;
 }
 
 /*--------------------------------------------------------------------------*/
-- 
1.9.1