diff options
| author | Guenter Roeck <linux@roeck-us.net> | 2017-01-04 12:27:21 -0800 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2017-02-24 14:00:23 -0800 |
| commit | a70dcc016fedfc214fb0d4cb59cd01d0117c8345 (patch) | |
| tree | 8adc2863f93ce0424c7dfa06a07bee249e89cb10 /drivers/watchdog | |
| parent | 71e9b2f0bf2abab805b23b126747979dda589a7c (diff) | |
| download | linux-0-day-a70dcc016fedfc214fb0d4cb59cd01d0117c8345.tar.gz linux-0-day-a70dcc016fedfc214fb0d4cb59cd01d0117c8345.tar.xz | |
watchdog: dw_wdt: Use watchdog core to install restart handler
Use the infrastructure provided by the watchdog core to install
the restart handler.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/dw_wdt.c | 23 |
1 files changed, 7 insertions, 16 deletions
diff --git a/drivers/watchdog/dw_wdt.c b/drivers/watchdog/dw_wdt.c index 3c6a3de13a1bc..914da3a4d3341 100644 --- a/drivers/watchdog/dw_wdt.c +++ b/drivers/watchdog/dw_wdt.c @@ -26,11 +26,9 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/moduleparam.h> -#include <linux/notifier.h> #include <linux/of.h> #include <linux/pm.h> #include <linux/platform_device.h> -#include <linux/reboot.h> #include <linux/watchdog.h> #define WDOG_CONTROL_REG_OFFSET 0x00 @@ -55,7 +53,6 @@ struct dw_wdt { void __iomem *regs; struct clk *clk; unsigned long rate; - struct notifier_block restart_handler; struct watchdog_device wdd; }; @@ -136,14 +133,12 @@ static int dw_wdt_start(struct watchdog_device *wdd) return 0; } -static int dw_wdt_restart_handle(struct notifier_block *this, - unsigned long mode, void *cmd) +static int dw_wdt_restart(struct watchdog_device *wdd, + unsigned long action, void *data) { - struct dw_wdt *dw_wdt; + struct dw_wdt *dw_wdt = to_dw_wdt(wdd); u32 val; - dw_wdt = container_of(this, struct dw_wdt, restart_handler); - writel(0, dw_wdt->regs + WDOG_TIMEOUT_RANGE_REG_OFFSET); val = readl(dw_wdt->regs + WDOG_CONTROL_REG_OFFSET); if (val & WDOG_CONTROL_REG_WDT_EN_MASK) @@ -156,7 +151,7 @@ static int dw_wdt_restart_handle(struct notifier_block *this, /* wait for reset to assert... */ mdelay(500); - return NOTIFY_DONE; + return 0; } static unsigned int dw_wdt_get_timeleft(struct watchdog_device *wdd) @@ -179,6 +174,7 @@ static const struct watchdog_ops dw_wdt_ops = { .ping = dw_wdt_ping, .set_timeout = dw_wdt_set_timeout, .get_timeleft = dw_wdt_get_timeleft, + .restart = dw_wdt_restart, }; #ifdef CONFIG_PM_SLEEP @@ -265,16 +261,12 @@ static int dw_wdt_drv_probe(struct platform_device *pdev) platform_set_drvdata(pdev, dw_wdt); + watchdog_set_restart_priority(wdd, 128); + ret = watchdog_register_device(wdd); if (ret) goto out_disable_clk; - dw_wdt->restart_handler.notifier_call = dw_wdt_restart_handle; - dw_wdt->restart_handler.priority = 128; - ret = register_restart_handler(&dw_wdt->restart_handler); - if (ret) - pr_warn("cannot register restart handler\n"); - return 0; out_disable_clk: @@ -286,7 +278,6 @@ static int dw_wdt_drv_remove(struct platform_device *pdev) { struct dw_wdt *dw_wdt = platform_get_drvdata(pdev); - unregister_restart_handler(&dw_wdt->restart_handler); watchdog_unregister_device(&dw_wdt->wdd); clk_disable_unprepare(dw_wdt->clk); |