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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>,
	Maxime Coquelin <mcoquelin.stm32@gmail.com>,
	Alexandre Torgue <alexandre.torgue@st.com>
Subject: [PATCH 20/23] watchdog: stmp3xxx_rtc_wdt: Convert to use device managed functions
Date: Tue,  9 Apr 2019 10:23:58 -0700
Message-ID: <1554830641-9247-21-git-send-email-linux@roeck-us.net> (raw)
In-Reply-To: <1554830641-9247-1-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.

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

- Introduce local variable 'struct device *dev' and use it instead of
  dereferencing it repeatedly
- Use devm_watchdog_register_driver() to register watchdog device

Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
 drivers/watchdog/stmp3xxx_rtc_wdt.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/watchdog/stmp3xxx_rtc_wdt.c b/drivers/watchdog/stmp3xxx_rtc_wdt.c
index 994c54cc68e9..671f4ba7b4ed 100644
--- a/drivers/watchdog/stmp3xxx_rtc_wdt.c
+++ b/drivers/watchdog/stmp3xxx_rtc_wdt.c
@@ -89,31 +89,31 @@ static struct notifier_block wdt_notifier = {
 
 static int stmp3xxx_wdt_probe(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
 	int ret;
 
-	watchdog_set_drvdata(&stmp3xxx_wdd, &pdev->dev);
+	watchdog_set_drvdata(&stmp3xxx_wdd, dev);
 
 	stmp3xxx_wdd.timeout = clamp_t(unsigned, heartbeat, 1, STMP3XXX_MAX_TIMEOUT);
-	stmp3xxx_wdd.parent = &pdev->dev;
+	stmp3xxx_wdd.parent = dev;
 
-	ret = watchdog_register_device(&stmp3xxx_wdd);
+	ret = devm_watchdog_register_device(dev, &stmp3xxx_wdd);
 	if (ret < 0) {
-		dev_err(&pdev->dev, "cannot register watchdog device\n");
+		dev_err(dev, "cannot register watchdog device\n");
 		return ret;
 	}
 
 	if (register_reboot_notifier(&wdt_notifier))
-		dev_warn(&pdev->dev, "cannot register reboot notifier\n");
+		dev_warn(dev, "cannot register reboot notifier\n");
 
-	dev_info(&pdev->dev, "initialized watchdog with heartbeat %ds\n",
-			stmp3xxx_wdd.timeout);
+	dev_info(dev, "initialized watchdog with heartbeat %ds\n",
+		 stmp3xxx_wdd.timeout);
 	return 0;
 }
 
 static int stmp3xxx_wdt_remove(struct platform_device *pdev)
 {
 	unregister_reboot_notifier(&wdt_notifier);
-	watchdog_unregister_device(&stmp3xxx_wdd);
 	return 0;
 }
 
-- 
2.7.4


  parent reply index

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-09 17:23 [PATCH 00/23] watchdog: Expand use of device managed functions (series 2 of 3) Guenter Roeck
2019-04-09 17:23 ` [PATCH 01/23] watchdog: max77620_wdt: Convert to use device managed functions and other improvements Guenter Roeck
2019-04-09 17:23 ` [PATCH 02/23] watchdog: mena21_wdt: Use 'dev' instead of dereferencing it repeatedly Guenter Roeck
2019-04-11  7:18   ` Johannes Thumshirn
2019-04-09 17:23 ` [PATCH 03/23] watchdog: menf21bmc_wdt: Convert to use device managed functions and other improvements Guenter Roeck
2019-04-09 17:23 ` [PATCH 04/23] watchdog: meson_gxbb_wdt: " Guenter Roeck
2019-04-09 17:23 ` [PATCH 05/23] watchdog: meson_wdt: Use 'dev' instead of dereferencing it repeatedly Guenter Roeck
2019-04-09 17:23 ` [PATCH 06/23] watchdog: mlx_wdt: " Guenter Roeck
2019-04-09 17:23 ` [PATCH 07/23] watchdog: moxart_wdt: Convert to use device managed functions and other improvements Guenter Roeck
2019-04-09 17:23 ` [PATCH 08/23] watchdog: mtk_wdt: " Guenter Roeck
2019-04-09 17:23 ` [PATCH 09/23] watchdog: npcm_wdt: Use local variable 'dev' consistently Guenter Roeck
2019-04-09 17:23 ` [PATCH 10/23] watchdog: of_xilinx_wdt: Convert to use device managed functions and other improvements Guenter Roeck
2019-04-10  6:38   ` Michal Simek
2019-04-10 12:09     ` Guenter Roeck
2019-04-09 17:23 ` [PATCH 11/23] watchdog: pm8916_wdt: Use 'dev' instead of dereferencing it repeatedly Guenter Roeck
2019-04-09 17:23 ` [PATCH 12/23] watchdog: qcom-wdt: Convert to use device managed functions and other improvements Guenter Roeck
2019-04-09 17:23 ` [PATCH 13/23] watchdog: rn5t618_wdt: Use 'dev' instead of dereferencing it repeatedly Guenter Roeck
2019-04-09 17:23 ` [PATCH 14/23] watchdog: rtd119x_wdt: Convert to use device managed functions and other improvements Guenter Roeck
2019-04-09 17:23 ` [PATCH 15/23] watchdog: rza_wdt: Use 'dev' instead of dereferencing it repeatedly Guenter Roeck
2019-04-09 17:23 ` [PATCH 16/23] watchdog: sama5d4_wdt: Convert to use device managed functions and other improvements Guenter Roeck
2019-04-09 17:23 ` [PATCH 17/23] watchdog: sirfsoc_wdt: " Guenter Roeck
2019-04-09 17:23 ` [PATCH 18/23] watchdog: 1: " Guenter Roeck
2019-04-09 17:38   ` Guenter Roeck
2019-04-09 17:23 ` [PATCH 19/23] watchdog: st_lpc_wdt: Convert to use device managed functions Guenter Roeck
2019-04-10  7:26   ` Patrice CHOTARD
2019-04-09 17:23 ` Guenter Roeck [this message]
2019-04-09 17:23 ` [PATCH 21/23] watchdog: stpmic1_wdt: Use 'dev' instead of dereferencing it repeatedly Guenter Roeck
2019-04-09 17:24 ` [PATCH 22/23] watchdog: sunxi_wdt: " Guenter Roeck
2019-04-10  7:06   ` Maxime Ripard
2019-04-09 17:24 ` [PATCH 23/23] watchdog: tangox_wdt: Convert to use device managed functions and other improvements Guenter Roeck
2019-04-10 11:20   ` Måns Rullgård

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