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watchdog: qcom-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 12:28:09 -05:00 committed by Wim Van Sebroeck
parent e86adc3f63
commit 80969a68ff
1 changed files with 19 additions and 30 deletions
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49
drivers/watchdog/qcom-wdt.c
View File

@ -17,7 +17,6 @@
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/reboot.h>
#include <linux/watchdog.h>
#define WDT_RST 0x38
@ -28,7 +27,6 @@ struct qcom_wdt {
struct watchdog_device wdd;
struct clk *clk;
unsigned long rate;
struct notifier_block restart_nb;
void __iomem *base;
};
@ -72,25 +70,9 @@ static int qcom_wdt_set_timeout(struct watchdog_device *wdd,
return qcom_wdt_start(wdd);
}
static const struct watchdog_ops qcom_wdt_ops = {
.start = qcom_wdt_start,
.stop = qcom_wdt_stop,
.ping = qcom_wdt_ping,
.set_timeout = qcom_wdt_set_timeout,
.owner = THIS_MODULE,
};
static const struct watchdog_info qcom_wdt_info = {
.options = WDIOF_KEEPALIVEPING
| WDIOF_MAGICCLOSE
| WDIOF_SETTIMEOUT,
.identity = KBUILD_MODNAME,
};
static int qcom_wdt_restart(struct notifier_block *nb, unsigned long action,
void *data)
static int qcom_wdt_restart(struct watchdog_device *wdd)
{
struct qcom_wdt *wdt = container_of(nb, struct qcom_wdt, restart_nb);
struct qcom_wdt *wdt = to_qcom_wdt(wdd);
u32 timeout;
/*
@ -110,9 +92,25 @@ static int qcom_wdt_restart(struct notifier_block *nb, unsigned long action,
wmb();
msleep(150);
return NOTIFY_DONE;
return 0;
}
static const struct watchdog_ops qcom_wdt_ops = {
.start = qcom_wdt_start,
.stop = qcom_wdt_stop,
.ping = qcom_wdt_ping,
.set_timeout = qcom_wdt_set_timeout,
.restart = qcom_wdt_restart,
.owner = THIS_MODULE,
};
static const struct watchdog_info qcom_wdt_info = {
.options = WDIOF_KEEPALIVEPING
| WDIOF_MAGICCLOSE
| WDIOF_SETTIMEOUT,
.identity = KBUILD_MODNAME,
};
static int qcom_wdt_probe(struct platform_device *pdev)
{
struct qcom_wdt *wdt;
@ -187,14 +185,6 @@ static int qcom_wdt_probe(struct platform_device *pdev)
goto err_clk_unprepare;
}
/*
* WDT restart notifier has priority 0 (use as a last resort)
*/
wdt->restart_nb.notifier_call = qcom_wdt_restart;
ret = register_restart_handler(&wdt->restart_nb);
if (ret)
dev_err(&pdev->dev, "failed to setup restart handler\n");
platform_set_drvdata(pdev, wdt);
return 0;
@ -207,7 +197,6 @@ static int qcom_wdt_remove(struct platform_device *pdev)
{
struct qcom_wdt *wdt = platform_get_drvdata(pdev);
unregister_restart_handler(&wdt->restart_nb);
watchdog_unregister_device(&wdt->wdd);
clk_disable_unprepare(wdt->clk);
return 0;