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authorDamien Riegel <damien.riegel@savoirfairelinux.com>2015-11-20 16:54:53 -0500
committerWim Van Sebroeck <wim@iguana.be>2015-12-13 15:55:58 +0100
commit5e1f976f43dc6b5903ee4b78536347b5004cefe4 (patch)
tree898f4d48951bf21c22b530353b0ba97b33fbc5bd /drivers/watchdog/cadence_wdt.c
parent2786aadeab263609eb690ca37e7dfd3b9ffa3625 (diff)
watchdog: cadence_wdt: use core reboot notifier
Get rid of the custom reboot notifier block registration and use 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@savoirlinux.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/watchdog/cadence_wdt.c')
-rw-r--r--drivers/watchdog/cadence_wdt.c36
1 files changed, 1 insertions, 35 deletions
diff --git a/drivers/watchdog/cadence_wdt.c b/drivers/watchdog/cadence_wdt.c
index bcfd2a22208f..abf64eb9c88e 100644
--- a/drivers/watchdog/cadence_wdt.c
+++ b/drivers/watchdog/cadence_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>
#define CDNS_WDT_DEFAULT_TIMEOUT 10
@@ -72,7 +71,6 @@ MODULE_PARM_DESC(nowayout,
* @ctrl_clksel: counter clock prescaler selection
* @io_lock: spinlock for IO register access
* @cdns_wdt_device: watchdog device structure
- * @cdns_wdt_notifier: notifier structure
*
* Structure containing parameters specific to cadence watchdog.
*/
@@ -84,7 +82,6 @@ struct cdns_wdt {
u32 ctrl_clksel;
spinlock_t io_lock;
struct watchdog_device cdns_wdt_device;
- struct notifier_block cdns_wdt_notifier;
};
/* Write access to Registers */
@@ -280,29 +277,6 @@ static struct watchdog_ops cdns_wdt_ops = {
.set_timeout = cdns_wdt_settimeout,
};
-/**
- * cdns_wdt_notify_sys - Notifier for reboot or shutdown.
- *
- * @this: handle to notifier block
- * @code: turn off indicator
- * @unused: unused
- * Return: NOTIFY_DONE
- *
- * This notifier is invoked whenever the system reboot or shutdown occur
- * because we need to disable the WDT before system goes down as WDT might
- * reset on the next boot.
- */
-static int cdns_wdt_notify_sys(struct notifier_block *this, unsigned long code,
- void *unused)
-{
- struct cdns_wdt *wdt = container_of(this, struct cdns_wdt,
- cdns_wdt_notifier);
- if (code == SYS_DOWN || code == SYS_HALT)
- cdns_wdt_stop(&wdt->cdns_wdt_device);
-
- return NOTIFY_DONE;
-}
-
/************************Platform Operations*****************************/
/**
* cdns_wdt_probe - Probe call for the device.
@@ -360,6 +334,7 @@ static int cdns_wdt_probe(struct platform_device *pdev)
}
watchdog_set_nowayout(cdns_wdt_device, nowayout);
+ watchdog_stop_on_reboot(cdns_wdt_device);
watchdog_set_drvdata(cdns_wdt_device, wdt);
wdt->clk = devm_clk_get(&pdev->dev, NULL);
@@ -386,14 +361,6 @@ static int cdns_wdt_probe(struct platform_device *pdev)
spin_lock_init(&wdt->io_lock);
- wdt->cdns_wdt_notifier.notifier_call = &cdns_wdt_notify_sys;
- ret = register_reboot_notifier(&wdt->cdns_wdt_notifier);
- if (ret != 0) {
- dev_err(&pdev->dev, "cannot register reboot notifier err=%d)\n",
- ret);
- goto err_clk_disable;
- }
-
ret = watchdog_register_device(cdns_wdt_device);
if (ret) {
dev_err(&pdev->dev, "Failed to register wdt device\n");
@@ -427,7 +394,6 @@ static int cdns_wdt_remove(struct platform_device *pdev)
cdns_wdt_stop(&wdt->cdns_wdt_device);
watchdog_unregister_device(&wdt->cdns_wdt_device);
- unregister_reboot_notifier(&wdt->cdns_wdt_notifier);
clk_disable_unprepare(wdt->clk);
return 0;