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From: Guenter Roeck <linux@roeck-us.net>
To: Wim Van Sebroeck <wim@linux-watchdog.org>
Cc: linux-watchdog@vger.kernel.org, linux-kernel@vger.kernel.org,
	Guenter Roeck <linux@roeck-us.net>
Subject: [PATCH 16/22] watchdog: gpio_wdt: Convert to use device managed functions and other improvements
Date: Mon,  8 Apr 2019 12:38:40 -0700
Message-ID: <1554752326-13319-17-git-send-email-linux@roeck-us.net> (raw)
In-Reply-To: <1554752326-13319-1-git-send-email-linux@roeck-us.net>

Use device managed functions to simplify error handling, reduce
source code size, improve readability, and reduce the likelyhood of bugs.
Other improvements as listed below.

The conversion was done automatically with coccinelle using the
following semantic patches. The semantic patches and the scripts
used to generate this commit log are available at
https://github.com/groeck/coccinelle-patches

- Drop assignments to otherwise unused variables
- Drop empty remove function
- Use local variable 'struct device *dev' consistently
- Use devm_watchdog_register_driver() to register watchdog device

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
 drivers/watchdog/gpio_wdt.c | 16 ++--------------
 1 file changed, 2 insertions(+), 14 deletions(-)

diff --git a/drivers/watchdog/gpio_wdt.c b/drivers/watchdog/gpio_wdt.c
index ea77cae03c9d..bc24674b4d9e 100644
--- a/drivers/watchdog/gpio_wdt.c
+++ b/drivers/watchdog/gpio_wdt.c
@@ -154,25 +154,14 @@ static int gpio_wdt_probe(struct platform_device *pdev)
 	priv->wdd.parent	= dev;
 	priv->wdd.timeout	= SOFT_TIMEOUT_DEF;
 
-	watchdog_init_timeout(&priv->wdd, 0, &pdev->dev);
+	watchdog_init_timeout(&priv->wdd, 0, dev);
 
 	watchdog_stop_on_reboot(&priv->wdd);
 
 	if (priv->always_running)
 		gpio_wdt_start(&priv->wdd);
 
-	ret = watchdog_register_device(&priv->wdd);
-
-	return ret;
-}
-
-static int gpio_wdt_remove(struct platform_device *pdev)
-{
-	struct gpio_wdt_priv *priv = platform_get_drvdata(pdev);
-
-	watchdog_unregister_device(&priv->wdd);
-
-	return 0;
+	return devm_watchdog_register_device(dev, &priv->wdd);
 }
 
 static const struct of_device_id gpio_wdt_dt_ids[] = {
@@ -187,7 +176,6 @@ static struct platform_driver gpio_wdt_driver = {
 		.of_match_table	= gpio_wdt_dt_ids,
 	},
 	.probe	= gpio_wdt_probe,
-	.remove	= gpio_wdt_remove,
 };
 
 #ifdef CONFIG_GPIO_WATCHDOG_ARCH_INITCALL
-- 
2.7.4


  parent reply index

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-08 19:38 [PATCH 00/22] watchdog: " Guenter Roeck
2019-04-08 19:38 ` [PATCH 01/22] watchdog: armada_37xx_wdt: " Guenter Roeck
2019-04-08 19:38 ` [PATCH 02/22] watchdog: asm9260_wdt: " Guenter Roeck
2019-04-08 19:38 ` [PATCH 03/22] watchdog: aspeed_wdt: Use 'dev' instead of dereferencing it repeatedly Guenter Roeck
2019-04-09  0:37   ` Andrew Jeffery
2019-04-09  1:03     ` Guenter Roeck
2019-04-09  1:05       ` Andrew Jeffery
2019-04-08 19:38 ` [PATCH 04/22] watchdog: atlas7_wdt: Convert to use device managed functions and other improvements Guenter Roeck
2019-04-08 19:38 ` [PATCH 05/22] watchdog: bcm2835_wdt: drop platform_set_drvdata Guenter Roeck
2019-04-09  6:54   ` Stefan Wahren
2019-04-08 19:38 ` [PATCH 06/22] watchdog: bcm7038_wdt: Convert to use device managed functions and other improvements Guenter Roeck
2019-04-08 19:38 ` [PATCH 07/22] watchdog: bcm_kona_wdt: " Guenter Roeck
2019-04-09 16:36   ` Ray Jui
2019-04-08 19:38 ` [PATCH 08/22] watchdog: cadence_wdt: " Guenter Roeck
2019-04-08 19:38 ` [PATCH 09/22] watchdog: da9052_wdt: Use 'dev' instead of dereferencing it repeatedly Guenter Roeck
2019-04-10 12:12   ` Steve Twiss
2019-04-08 19:38 ` [PATCH 10/22] watchdog: da9055_wdt: " Guenter Roeck
2019-04-10 12:14   ` Steve Twiss
2019-04-08 19:38 ` [PATCH 11/22] watchdog: da9062_wdt: " Guenter Roeck
2019-04-10 12:20   ` Steve Twiss
2019-04-08 19:38 ` [PATCH 12/22] watchdog: da9063_wdt: " Guenter Roeck
2019-04-10 12:50   ` Steve Twiss
2019-04-10 13:11     ` Guenter Roeck
2019-04-08 19:38 ` [PATCH 13/22] watchdog: davinci_wdt: Convert to use device managed functions and other improvements Guenter Roeck
2019-04-08 19:38 ` [PATCH 14/22] watchdog: ep93xx_wdt: Use 'dev' instead of dereferencing it repeatedly Guenter Roeck
2019-04-08 19:38 ` [PATCH 15/22] watchdog: ftwdt010_wdt: Use 'dev' consistently Guenter Roeck
2019-04-08 19:38 ` Guenter Roeck [this message]
2019-04-08 19:38 ` [PATCH 17/22] watchdog: iTCO_wdt: Various improvements Guenter Roeck
2019-04-08 19:38 ` [PATCH 18/22] watchdog: imgpdc_wdt: Convert to use device managed functions and other improvements Guenter Roeck
2019-04-08 19:38 ` [PATCH 19/22] watchdog: intel-mid_wdt: Use 'dev' instead of dereferencing it repeatedly Guenter Roeck
2019-04-08 19:38 ` [PATCH 20/22] watchdog: kempld_wdt: Convert to use device managed functions and other improvements Guenter Roeck
2019-04-08 19:38 ` [PATCH 21/22] watchdog: lpc18xx_wdt: " Guenter Roeck
2019-04-08 19:38 ` [PATCH 22/22] watchdog: max63xx_wdt: " Guenter Roeck

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