Re: [RFC PATCH 02/13] watchdog: bcm47xx_wdt: use core restart handler

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On 11/02/2015 05:36 PM, Damien Riegel wrote:
Get rid of the custom restart handler by using the one provided by the
watchdog core.

Signed-off-by: Damien Riegel <damien.riegel@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Vivien Didelot <vivien.didelot@xxxxxxxxxxxxxxxxxxxx>
---
  drivers/watchdog/bcm47xx_wdt.c | 21 +++++++--------------
  include/linux/bcm47xx_wdt.h    |  1 -
  2 files changed, 7 insertions(+), 15 deletions(-)

diff --git a/drivers/watchdog/bcm47xx_wdt.c b/drivers/watchdog/bcm47xx_wdt.c
index 4064a43..534ffb4 100644
--- a/drivers/watchdog/bcm47xx_wdt.c
+++ b/drivers/watchdog/bcm47xx_wdt.c
@@ -94,6 +94,7 @@ static struct watchdog_ops bcm47xx_wdt_hard_ops = {
  	.stop		= bcm47xx_wdt_hard_stop,
  	.ping		= bcm47xx_wdt_hard_keepalive,
  	.set_timeout	= bcm47xx_wdt_hard_set_timeout,
+	.restart        = bcm47xx_wdt_restart,
  };

  static void bcm47xx_wdt_soft_timer_tick(unsigned long data)
@@ -169,15 +170,13 @@ static int bcm47xx_wdt_notify_sys(struct notifier_block *this,
  	return NOTIFY_DONE;
  }

-static int bcm47xx_wdt_restart(struct notifier_block *this, unsigned long mode,
-			       void *cmd)
+static int bcm47xx_wdt_restart(struct watchdog_device *wdd)
  {
-	struct bcm47xx_wdt *wdt;
+	struct bcm47xx_wdt *wdt = bcm47xx_wdt_get(wdd);

-	wdt = container_of(this, struct bcm47xx_wdt, restart_handler);
  	wdt->timer_set(wdt, 1);

-	return NOTIFY_DONE;
+	return 0;
  }

  static struct watchdog_ops bcm47xx_wdt_soft_ops = {
@@ -186,6 +185,7 @@ static struct watchdog_ops bcm47xx_wdt_soft_ops = {
  	.stop		= bcm47xx_wdt_soft_stop,
  	.ping		= bcm47xx_wdt_soft_keepalive,
  	.set_timeout	= bcm47xx_wdt_soft_set_timeout,
+	.restart        = bcm47xx_wdt_restart,
  };

  static int bcm47xx_wdt_probe(struct platform_device *pdev)
@@ -214,6 +214,7 @@ static int bcm47xx_wdt_probe(struct platform_device *pdev)
  	if (ret)
  		goto err_timer;
  	watchdog_set_nowayout(&wdt->wdd, nowayout);
+	watchdog_set_restart_priority(&wdt->wdd, 64);

  	wdt->notifier.notifier_call = &bcm47xx_wdt_notify_sys;

@@ -221,23 +222,15 @@ static int bcm47xx_wdt_probe(struct platform_device *pdev)
  	if (ret)
  		goto err_timer;

-	wdt->restart_handler.notifier_call = &bcm47xx_wdt_restart;
-	wdt->restart_handler.priority = 64;
-	ret = register_restart_handler(&wdt->restart_handler);
-	if (ret)
-		goto err_notifier;
-
  	ret = watchdog_register_device(&wdt->wdd);
  	if (ret)
-		goto err_handler;
+		goto err_notifier;

		goto err_handler;


  	dev_info(&pdev->dev, "BCM47xx Watchdog Timer enabled (%d seconds%s%s)\n",
  		timeout, nowayout ? ", nowayout" : "",
  		soft ? ", Software Timer" : "");
  	return 0;

-err_handler:
-	unregister_restart_handler(&wdt->restart_handler);
  err_notifier:
  	unregister_reboot_notifier(&wdt->notifier);
  err_timer:
diff --git a/include/linux/bcm47xx_wdt.h b/include/linux/bcm47xx_wdt.h
index 5582c21..b708786 100644
--- a/include/linux/bcm47xx_wdt.h
+++ b/include/linux/bcm47xx_wdt.h
@@ -16,7 +16,6 @@ struct bcm47xx_wdt {

  	struct watchdog_device wdd;
  	struct notifier_block notifier;
-	struct notifier_block restart_handler;

  	struct timer_list soft_timer;
  	atomic_t soft_ticks;


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