linux-kernel - [PATCH] gpio: gpio-xgene: simplify probe, return devm_gpiochip_add

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 21 May 2021 21:10:42 +0300
From:   Alexandru Ardelean <aardelean@...iqon.com>
To:     linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     linus.walleij@...aro.org, bgolaszewski@...libre.com,
        Alexandru Ardelean <aardelean@...iqon.com>
Subject: [PATCH] gpio: gpio-xgene: simplify probe, return devm_gpiochip_add_data() directly

The handling of the return value from devm_gpiochip_add_data() is a bit
redundant. It prints messages on error and success cases.
While the success message may be useful, it is more in the area of log
spam, and these can be printed with other forms of kernel logging.

This change does a direct return with devm_gpiochip_add_data() in the probe
function.

The platform_set_drvdata() is needed, as this driver uses the stored
private date in the PM suspend/resume routines.

Signed-off-by: Alexandru Ardelean <aardelean@...iqon.com>
---
 drivers/gpio/gpio-xgene.c | 11 +----------
 1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/drivers/gpio/gpio-xgene.c b/drivers/gpio/gpio-xgene.c
index 532b0df8a1f2..fb4b0c67aeef 100644
--- a/drivers/gpio/gpio-xgene.c
+++ b/drivers/gpio/gpio-xgene.c
@@ -159,7 +159,6 @@ static SIMPLE_DEV_PM_OPS(xgene_gpio_pm, xgene_gpio_suspend, xgene_gpio_resume);
 static int xgene_gpio_probe(struct platform_device *pdev)
 {
 	struct xgene_gpio *gpio;
-	int err = 0;
 
 	gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL);
 	if (!gpio)
@@ -183,15 +182,7 @@ static int xgene_gpio_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, gpio);
 
-	err = devm_gpiochip_add_data(&pdev->dev, &gpio->chip, gpio);
-	if (err) {
-		dev_err(&pdev->dev,
-			"failed to register gpiochip.\n");
-		return err;
-	}
-
-	dev_info(&pdev->dev, "X-Gene GPIO driver registered.\n");
-	return 0;
+	return devm_gpiochip_add_data(&pdev->dev, &gpio->chip, gpio);
 }
 
 static const struct of_device_id xgene_gpio_of_match[] = {
-- 
2.31.1