On 01/05/2017 01:42 AM, Marc Gonzalez wrote:
[ Adding Mans ] Guenter, patch c7ef68c32265 states "Fixes: a3e376d26ace". Is that true? I mean, they seem quite orthogonal; then again I know nothing of this framework.
max_hw_heartbeat_ms must be set for WDOG_HW_RUNNING to work. Guenter
Regards. On 04/01/2017 22:28, Guenter Roeck wrote:Use the infrastructure provided by the watchdog core to install the restart handler. Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx> --- drivers/watchdog/tangox_wdt.c | 32 +++++++++++--------------------- 1 file changed, 11 insertions(+), 21 deletions(-) diff --git a/drivers/watchdog/tangox_wdt.c b/drivers/watchdog/tangox_wdt.c index 202c4b9cc921..49e6e805db7c 100644 --- a/drivers/watchdog/tangox_wdt.c +++ b/drivers/watchdog/tangox_wdt.c @@ -15,9 +15,7 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/moduleparam.h> -#include <linux/notifier.h> #include <linux/platform_device.h> -#include <linux/reboot.h> #include <linux/watchdog.h> #define DEFAULT_TIMEOUT 30 @@ -47,7 +45,6 @@ struct tangox_wdt_device { void __iomem *base; unsigned long clk_rate; struct clk *clk; - struct notifier_block restart; }; static int tangox_wdt_set_timeout(struct watchdog_device *wdt, @@ -96,24 +93,24 @@ static const struct watchdog_info tangox_wdt_info = { .identity = "tangox watchdog", }; +static int tangox_wdt_restart(struct watchdog_device *wdt, + unsigned long action, void *data) +{ + struct tangox_wdt_device *dev = watchdog_get_drvdata(wdt); + + writel(1, dev->base + WD_COUNTER); + + return 0; +} + static const struct watchdog_ops tangox_wdt_ops = { .start = tangox_wdt_start, .stop = tangox_wdt_stop, .set_timeout = tangox_wdt_set_timeout, .get_timeleft = tangox_wdt_get_timeleft, + .restart = tangox_wdt_restart, }; -static int tangox_wdt_restart(struct notifier_block *nb, unsigned long action, - void *data) -{ - struct tangox_wdt_device *dev = - container_of(nb, struct tangox_wdt_device, restart); - - writel(1, dev->base + WD_COUNTER); - - return NOTIFY_DONE; -} - static int tangox_wdt_probe(struct platform_device *pdev) { struct tangox_wdt_device *dev; @@ -180,12 +177,6 @@ static int tangox_wdt_probe(struct platform_device *pdev) platform_set_drvdata(pdev, dev); - dev->restart.notifier_call = tangox_wdt_restart; - dev->restart.priority = 128; - err = register_restart_handler(&dev->restart); - if (err) - dev_warn(&pdev->dev, "failed to register restart handler\n"); - dev_info(&pdev->dev, "SMP86xx/SMP87xx watchdog registered\n"); return 0; @@ -202,7 +193,6 @@ static int tangox_wdt_remove(struct platform_device *pdev) tangox_wdt_stop(&dev->wdt); clk_disable_unprepare(dev->clk); - unregister_restart_handler(&dev->restart); watchdog_unregister_device(&dev->wdt); return 0;
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