linux-kernel - [PATCH 1/4] gpio: davinci: Use devm_gpiochip_add_data in place of gpiochip_add

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Message-ID: <1500375436-9435-2-git-send-email-j-keerthy@ti.com>
Date:   Tue, 18 Jul 2017 16:27:13 +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 1/4] gpio: davinci: Use devm_gpiochip_add_data in place of gpiochip_add_data

Use the devm version of gpiochip_add_data and pass on the
return value. Reset the static variables to 0 before returning.

Signed-off-by: Keerthy <j-keerthy@...com>
---
 drivers/gpio/gpio-davinci.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpio-davinci.c b/drivers/gpio/gpio-davinci.c
index 65cb359..2c88054 100644
--- a/drivers/gpio/gpio-davinci.c
+++ b/drivers/gpio/gpio-davinci.c
@@ -166,7 +166,7 @@ static int davinci_gpio_get(struct gpio_chip *chip, unsigned offset)
 static int davinci_gpio_probe(struct platform_device *pdev)
 {
 	static int ctrl_num, bank_base;
-	int gpio, bank;
+	int gpio, bank, ret = 0;
 	unsigned ngpio, nbank;
 	struct davinci_gpio_controller *chips;
 	struct davinci_gpio_platform_data *pdata;
@@ -232,7 +232,13 @@ static int davinci_gpio_probe(struct platform_device *pdev)
 	for (gpio = 0, bank = 0; gpio < ngpio; gpio += 32, bank++)
 		chips->regs[bank] = gpio_base + offset_array[bank];
 
-	gpiochip_add_data(&chips->chip, chips);
+	ret = devm_gpiochip_add_data(dev, &chips->chip, chips);
+	if (ret) {
+		ctrl_num = 0;
+		bank_base = 0;
+		return ret;
+	}
+
 	platform_set_drvdata(pdev, chips);
 	davinci_gpio_irq_setup(pdev);
 	return 0;
-- 
1.9.1