summaryrefslogtreecommitdiff
path: root/drivers/watchdog
diff options
context:
space:
mode:
authorGuenter Roeck <linux@roeck-us.net>2017-01-10 15:21:52 -0800
committerGuenter Roeck <linux@roeck-us.net>2017-02-24 14:00:23 -0800
commitcb5c14ea573b625053487f9dfde395ac0e8bc11b (patch)
tree9f0cb30d8e4fcfac77984172c464cf94fb44e154 /drivers/watchdog
parent30cba9a109feb0dbb262d575ae33be8c16d7d26f (diff)
watchdog: mena21_wdt: Convert to use device managed functions and other improvements
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 - Replace 'goto l; ... l: return e;' with 'return e;' - Drop assignments to otherwise unused variables - Drop remove function - Drop unnecessary mutex_destroy() on allocated data - Use devm_watchdog_register_driver() to register watchdog device Acked-by: Johannes Thumshirn <morbidrsa@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/watchdog')
-rw-r--r--drivers/watchdog/mena21_wdt.c24
1 files changed, 2 insertions, 22 deletions
diff --git a/drivers/watchdog/mena21_wdt.c b/drivers/watchdog/mena21_wdt.c
index af6a7c489f08..045201a6fdb3 100644
--- a/drivers/watchdog/mena21_wdt.c
+++ b/drivers/watchdog/mena21_wdt.c
@@ -212,34 +212,15 @@ static int a21_wdt_probe(struct platform_device *pdev)
drv->wdt = a21_wdt;
dev_set_drvdata(&pdev->dev, drv);
- ret = watchdog_register_device(&a21_wdt);
+ ret = devm_watchdog_register_device(&pdev->dev, &a21_wdt);
if (ret) {
dev_err(&pdev->dev, "Cannot register watchdog device\n");
- goto err_register_wd;
+ return ret;
}
dev_info(&pdev->dev, "MEN A21 watchdog timer driver enabled\n");
return 0;
-
-err_register_wd:
- mutex_destroy(&drv->lock);
-
- return ret;
-}
-
-static int a21_wdt_remove(struct platform_device *pdev)
-{
- struct a21_wdt_drv *drv = dev_get_drvdata(&pdev->dev);
-
- dev_warn(&pdev->dev,
- "Unregistering A21 watchdog driver, board may reboot\n");
-
- watchdog_unregister_device(&drv->wdt);
-
- mutex_destroy(&drv->lock);
-
- return 0;
}
static void a21_wdt_shutdown(struct platform_device *pdev)
@@ -257,7 +238,6 @@ MODULE_DEVICE_TABLE(of, a21_wdt_ids);
static struct platform_driver a21_wdt_driver = {
.probe = a21_wdt_probe,
- .remove = a21_wdt_remove,
.shutdown = a21_wdt_shutdown,
.driver = {
.name = "a21-watchdog",