Merge tag 'linux-watchdog-5.2-rc1' of git://www.linux-watchdog.org/linux-watchdog

Pull watchdog updates from Wim Van Sebroeck:

 - a new watchdog driver for the ROHM BD70528 watchdog block

 - a new watchdog driver for the i.MX system controller watchdog

 - conversions to use device managed functions and other improvements

 - refactor watchdog_init_timeout

 - make watchdog core configurable as module

 - pretimeout governors improvements

 - a lot of other fixes

* tag 'linux-watchdog-5.2-rc1' of git://www.linux-watchdog.org/linux-watchdog: (114 commits)
  watchdog: Enforce that at least one pretimeout governor is enabled
  watchdog: stm32: add dynamic prescaler support
  watchdog: Improve Kconfig entry ordering and dependencies
  watchdog: npcm: Enable modular builds
  watchdog: Make watchdog core configurable as module
  watchdog: Move pretimeout governor configuration up
  watchdog: Use depends instead of select for pretimeout governors
  watchdog: rtd119x: drop unused module.h include
  watchdog: intel_scu: make it explicitly non-modular
  watchdog: coh901327: make it explicitly non-modular
  watchdog: ziirave_wdt: drop warning after calling watchdog_init_timeout
  watchdog: xen_wdt: drop warning after calling watchdog_init_timeout
  watchdog: stm32_iwdg: drop warning after calling watchdog_init_timeout
  watchdog: st_lpc_wdt: drop warning after calling watchdog_init_timeout
  watchdog: sp5100_tco: drop warning after calling watchdog_init_timeout
  watchdog: renesas_wdt: drop warning after calling watchdog_init_timeout
  watchdog: nic7018_wdt: drop warning after calling watchdog_init_timeout
  watchdog: ni903x_wdt: drop warning after calling watchdog_init_timeout
  watchdog: imx_sc_wdt: drop warning after calling watchdog_init_timeout
  watchdog: i6300esb: drop warning after calling watchdog_init_timeout
  ...

1 files changed, 14 insertions, 23 deletions

diff --git a/drivers/watchdog/zx2967_wdt.c b/drivers/watchdog/zx2967_wdt.c
index 9261f7c77f6d..c8549bf07cc9 100644
--- a/drivers/watchdog/zx2967_wdt.c
+++ b/drivers/watchdog/zx2967_wdt.c
@@ -188,11 +188,15 @@ static void zx2967_wdt_reset_sysctrl(struct device *dev)
 	of_node_put(out_args.np);
 }
 
+static void zx2967_clk_disable_unprepare(void *data)
+{
+	clk_disable_unprepare(data);
+}
+
 static int zx2967_wdt_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct zx2967_wdt *wdt;
-	struct resource *base;
 	int ret;
 	struct reset_control *rstc;
 
@@ -207,10 +211,9 @@ static int zx2967_wdt_probe(struct platform_device *pdev)
 	wdt->wdt_device.timeout = ZX2967_WDT_DEFAULT_TIMEOUT;
 	wdt->wdt_device.max_timeout = ZX2967_WDT_MAX_TIMEOUT;
 	wdt->wdt_device.min_timeout = ZX2967_WDT_MIN_TIMEOUT;
-	wdt->wdt_device.parent = &pdev->dev;
+	wdt->wdt_device.parent = dev;
 
-	base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	wdt->reg_base = devm_ioremap_resource(dev, base);
+	wdt->reg_base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(wdt->reg_base))
 		return PTR_ERR(wdt->reg_base);
 
@@ -227,13 +230,16 @@ static int zx2967_wdt_probe(struct platform_device *pdev)
 		dev_err(dev, "failed to enable clock\n");
 		return ret;
 	}
+	ret = devm_add_action_or_reset(dev, zx2967_clk_disable_unprepare,
+				       wdt->clock);
+	if (ret)
+		return ret;
 	clk_set_rate(wdt->clock, ZX2967_WDT_CLK_FREQ);
 
 	rstc = devm_reset_control_get_exclusive(dev, NULL);
 	if (IS_ERR(rstc)) {
 		dev_err(dev, "failed to get rstc");
-		ret = PTR_ERR(rstc);
-		goto err;
+		return PTR_ERR(rstc);
 	}
 
 	reset_control_assert(rstc);
@@ -244,28 +250,14 @@ static int zx2967_wdt_probe(struct platform_device *pdev)
 			ZX2967_WDT_DEFAULT_TIMEOUT, dev);
 	watchdog_set_nowayout(&wdt->wdt_device, WATCHDOG_NOWAYOUT);
 
-	ret = watchdog_register_device(&wdt->wdt_device);
+	ret = devm_watchdog_register_device(dev, &wdt->wdt_device);
 	if (ret)
-		goto err;
+		return ret;
 
 	dev_info(dev, "watchdog enabled (timeout=%d sec, nowayout=%d)",
 		 wdt->wdt_device.timeout, WATCHDOG_NOWAYOUT);
 
 	return 0;
-
-err:
-	clk_disable_unprepare(wdt->clock);
-	return ret;
-}
-
-static int zx2967_wdt_remove(struct platform_device *pdev)
-{
-	struct zx2967_wdt *wdt = platform_get_drvdata(pdev);
-
-	watchdog_unregister_device(&wdt->wdt_device);
-	clk_disable_unprepare(wdt->clock);
-
-	return 0;
 }
 
 static const struct of_device_id zx2967_wdt_match[] = {
@@ -276,7 +268,6 @@ MODULE_DEVICE_TABLE(of, zx2967_wdt_match);
 
 static struct platform_driver zx2967_wdt_driver = {
 	.probe		= zx2967_wdt_probe,
-	.remove		= zx2967_wdt_remove,
 	.driver		= {
 		.name	= "zx2967-wdt",
 		.of_match_table	= of_match_ptr(zx2967_wdt_match),