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path: root/drivers/watchdog/qcom-wdt.c
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Diffstat (limited to 'drivers/watchdog/qcom-wdt.c')
-rw-r--r--drivers/watchdog/qcom-wdt.c50
1 files changed, 19 insertions, 31 deletions
diff --git a/drivers/watchdog/qcom-wdt.c b/drivers/watchdog/qcom-wdt.c
index 773dcfaee..424f9a952 100644
--- a/drivers/watchdog/qcom-wdt.c
+++ b/drivers/watchdog/qcom-wdt.c
@@ -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;
@@ -166,7 +164,6 @@ static int qcom_wdt_probe(struct platform_device *pdev)
goto err_clk_unprepare;
}
- wdt->wdd.dev = &pdev->dev;
wdt->wdd.info = &qcom_wdt_info;
wdt->wdd.ops = &qcom_wdt_ops;
wdt->wdd.min_timeout = 1;
@@ -187,14 +184,6 @@ 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 +196,6 @@ 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;