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watchdog: digicolor_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>
This commit is contained in:
Damien Riegel 2015-11-16 12:28:02 -05:00 committed by Wim Van Sebroeck
parent f79781cead
commit d3b081857c
1 changed files with 5 additions and 13 deletions
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18
drivers/watchdog/digicolor_wdt.c
View File

@ -15,7 +15,6 @@
#include <linux/delay.h>
#include <linux/clk.h>
#include <linux/watchdog.h>
#include <linux/reboot.h>
#include <linux/platform_device.h>
#include <linux/of_address.h>
@ -28,7 +27,6 @@
struct dc_wdt {
void __iomem *base;
struct clk *clk;
struct notifier_block restart_handler;
spinlock_t lock;
};
@ -50,16 +48,15 @@ static void dc_wdt_set(struct dc_wdt *wdt, u32 ticks)
spin_unlock_irqrestore(&wdt->lock, flags);
}
static int dc_restart_handler(struct notifier_block *this, unsigned long mode,
void *cmd)
static int dc_wdt_restart(struct watchdog_device *wdog)
{
struct dc_wdt *wdt = container_of(this, struct dc_wdt, restart_handler);
struct dc_wdt *wdt = watchdog_get_drvdata(wdog);
dc_wdt_set(wdt, 1);
/* wait for reset to assert... */
mdelay(500);
return NOTIFY_DONE;
return 0;
}
static int dc_wdt_start(struct watchdog_device *wdog)
@ -104,6 +101,7 @@ static struct watchdog_ops dc_wdt_ops = {
.stop = dc_wdt_stop,
.set_timeout = dc_wdt_set_timeout,
.get_timeleft = dc_wdt_get_timeleft,
.restart = dc_wdt_restart,
};
static struct watchdog_info dc_wdt_info = {
@ -148,6 +146,7 @@ static int dc_wdt_probe(struct platform_device *pdev)
spin_lock_init(&wdt->lock);
watchdog_set_drvdata(&dc_wdt_wdd, wdt);
watchdog_set_restart_priority(&dc_wdt_wdd, 128);
watchdog_init_timeout(&dc_wdt_wdd, timeout, dev);
ret = watchdog_register_device(&dc_wdt_wdd);
if (ret) {
@ -155,12 +154,6 @@ static int dc_wdt_probe(struct platform_device *pdev)
goto err_iounmap;
}
wdt->restart_handler.notifier_call = dc_restart_handler;
wdt->restart_handler.priority = 128;
ret = register_restart_handler(&wdt->restart_handler);
if (ret)
dev_warn(&pdev->dev, "cannot register restart handler\n");
return 0;
err_iounmap:
@ -172,7 +165,6 @@ static int dc_wdt_remove(struct platform_device *pdev)
{
struct dc_wdt *wdt = platform_get_drvdata(pdev);
unregister_restart_handler(&wdt->restart_handler);
watchdog_unregister_device(&dc_wdt_wdd);
iounmap(wdt->base);