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authorDamien Riegel <damien.riegel@savoirfairelinux.com>2015-11-16 20:28:05 +0300
committerWim Van Sebroeck <wim@iguana.be>2015-12-13 17:29:36 +0300
commit2de4e5a67660b79535659f5961a10beaf551b49b (patch)
tree3a30d4509c102e092f9ae5508957270ef9841de3 /drivers/watchdog/lpc18xx_wdt.c
parent2d9d24755e7669ec39c946918038ce646e75a67a (diff)
downloadlinux-2de4e5a67660b79535659f5961a10beaf551b49b.tar.xz
watchdog: lpc18xx_wdt: use core restart handler
Get rid of the custom restart handler by using the one provided by the watchdog core. Signed-off-by: Damien Riegel <damien.riegel@savoirfairelinux.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/watchdog/lpc18xx_wdt.c')
-rw-r--r--drivers/watchdog/lpc18xx_wdt.c52
1 files changed, 21 insertions, 31 deletions
diff --git a/drivers/watchdog/lpc18xx_wdt.c b/drivers/watchdog/lpc18xx_wdt.c
index ab7b8b185d99..6914c83aa6d9 100644
--- a/drivers/watchdog/lpc18xx_wdt.c
+++ b/drivers/watchdog/lpc18xx_wdt.c
@@ -18,7 +18,6 @@
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
-#include <linux/reboot.h>
#include <linux/watchdog.h>
/* Registers */
@@ -59,7 +58,6 @@ struct lpc18xx_wdt_dev {
unsigned long clk_rate;
void __iomem *base;
struct timer_list timer;
- struct notifier_block restart_handler;
spinlock_t lock;
};
@@ -155,27 +153,9 @@ static int lpc18xx_wdt_start(struct watchdog_device *wdt_dev)
return 0;
}
-static struct watchdog_info lpc18xx_wdt_info = {
- .identity = "NXP LPC18xx Watchdog",
- .options = WDIOF_SETTIMEOUT |
- WDIOF_KEEPALIVEPING |
- WDIOF_MAGICCLOSE,
-};
-
-static const struct watchdog_ops lpc18xx_wdt_ops = {
- .owner = THIS_MODULE,
- .start = lpc18xx_wdt_start,
- .stop = lpc18xx_wdt_stop,
- .ping = lpc18xx_wdt_feed,
- .set_timeout = lpc18xx_wdt_set_timeout,
- .get_timeleft = lpc18xx_wdt_get_timeleft,
-};
-
-static int lpc18xx_wdt_restart(struct notifier_block *this, unsigned long mode,
- void *cmd)
+static int lpc18xx_wdt_restart(struct watchdog_device *wdt_dev)
{
- struct lpc18xx_wdt_dev *lpc18xx_wdt = container_of(this,
- struct lpc18xx_wdt_dev, restart_handler);
+ struct lpc18xx_wdt_dev *lpc18xx_wdt = watchdog_get_drvdata(wdt_dev);
unsigned long flags;
int val;
@@ -197,9 +177,26 @@ static int lpc18xx_wdt_restart(struct notifier_block *this, unsigned long mode,
spin_unlock_irqrestore(&lpc18xx_wdt->lock, flags);
- return NOTIFY_OK;
+ return 0;
}
+static struct watchdog_info lpc18xx_wdt_info = {
+ .identity = "NXP LPC18xx Watchdog",
+ .options = WDIOF_SETTIMEOUT |
+ WDIOF_KEEPALIVEPING |
+ WDIOF_MAGICCLOSE,
+};
+
+static const struct watchdog_ops lpc18xx_wdt_ops = {
+ .owner = THIS_MODULE,
+ .start = lpc18xx_wdt_start,
+ .stop = lpc18xx_wdt_stop,
+ .ping = lpc18xx_wdt_feed,
+ .set_timeout = lpc18xx_wdt_set_timeout,
+ .get_timeleft = lpc18xx_wdt_get_timeleft,
+ .restart = lpc18xx_wdt_restart,
+};
+
static int lpc18xx_wdt_probe(struct platform_device *pdev)
{
struct lpc18xx_wdt_dev *lpc18xx_wdt;
@@ -273,6 +270,7 @@ static int lpc18xx_wdt_probe(struct platform_device *pdev)
(unsigned long)&lpc18xx_wdt->wdt_dev);
watchdog_set_nowayout(&lpc18xx_wdt->wdt_dev, nowayout);
+ watchdog_set_restart_priority(&lpc18xx_wdt->wdt_dev, 128);
platform_set_drvdata(pdev, lpc18xx_wdt);
@@ -280,12 +278,6 @@ static int lpc18xx_wdt_probe(struct platform_device *pdev)
if (ret)
goto disable_wdt_clk;
- lpc18xx_wdt->restart_handler.notifier_call = lpc18xx_wdt_restart;
- lpc18xx_wdt->restart_handler.priority = 128;
- ret = register_restart_handler(&lpc18xx_wdt->restart_handler);
- if (ret)
- dev_warn(dev, "failed to register restart handler: %d\n", ret);
-
return 0;
disable_wdt_clk:
@@ -306,8 +298,6 @@ static int lpc18xx_wdt_remove(struct platform_device *pdev)
{
struct lpc18xx_wdt_dev *lpc18xx_wdt = platform_get_drvdata(pdev);
- unregister_restart_handler(&lpc18xx_wdt->restart_handler);
-
dev_warn(&pdev->dev, "I quit now, hardware will probably reboot!\n");
del_timer(&lpc18xx_wdt->timer);