linux-kernel - [PATCH 25/44] power/reset: vexpress-poweroff: Register with kernel poweroff handler

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Date:	Mon,  6 Oct 2014 22:28:27 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	linux-kernel@...r.kernel.org
Cc:	adi-buildroot-devel@...ts.sourceforge.net,
	devel@...verdev.osuosl.org, devicetree@...r.kernel.org,
	lguest@...ts.ozlabs.org, linux-acpi@...r.kernel.org,
	linux-alpha@...r.kernel.org, linux-am33-list@...hat.com,
	linux-cris-kernel@...s.com, linux-efi@...r.kernel.org,
	linux-hexagon@...r.kernel.org, linux-m32r-ja@...linux-m32r.org,
	linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org,
	linux-tegra@...r.kernel.org, linux-xtensa@...ux-xtensa.org,
	openipmi-developer@...ts.sourceforge.net,
	user-mode-linux-devel@...ts.sourceforge.net,
	linux-arm-kernel@...ts.infradead.org, linux-c6x-dev@...ux-c6x.org,
	linux-ia64@...r.kernel.org, linux-m68k@...ts.linux-m68k.org,
	linux-metag@...r.kernel.org, linux-mips@...ux-mips.org,
	linux-parisc@...r.kernel.org, linux-pm@...r.kernel.org,
	linux-sh@...r.kernel.org, xen-devel@...ts.xenproject.org,
	Guenter Roeck <linux@...ck-us.net>
Subject: [PATCH 25/44] power/reset: vexpress-poweroff: Register with kernel poweroff handler

Register with kernel poweroff handler instead of setting pm_power_off
directly.

Signed-off-by: Guenter Roeck <linux@...ck-us.net>
---
 drivers/power/reset/vexpress-poweroff.c | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/drivers/power/reset/vexpress-poweroff.c b/drivers/power/reset/vexpress-poweroff.c
index 4dc102e2..060c55d 100644
--- a/drivers/power/reset/vexpress-poweroff.c
+++ b/drivers/power/reset/vexpress-poweroff.c
@@ -12,6 +12,7 @@
  */
 
 #include <linux/delay.h>
+#include <linux/notifier.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
@@ -36,11 +37,19 @@ static void vexpress_reset_do(struct device *dev, const char *what)
 
 static struct device *vexpress_power_off_device;
 
-static void vexpress_power_off(void)
+static int vexpress_power_off(struct notifier_block *this,
+			      unsigned long unused1, void *unused2)
 {
 	vexpress_reset_do(vexpress_power_off_device, "power off");
+
+	return NOTIFY_DONE;
 }
 
+static struct notifier_block vexpress_poweroff_nb = {
+	.notifier_call = vexpress_power_off,
+	.priority = 128,
+};
+
 static struct device *vexpress_restart_device;
 
 static void vexpress_restart(enum reboot_mode reboot_mode, const char *cmd)
@@ -92,6 +101,7 @@ static int vexpress_reset_probe(struct platform_device *pdev)
 	const struct of_device_id *match =
 			of_match_device(vexpress_reset_of_match, &pdev->dev);
 	struct regmap *regmap;
+	int ret;
 
 	if (match)
 		func = (enum vexpress_reset_func)match->data;
@@ -106,7 +116,12 @@ static int vexpress_reset_probe(struct platform_device *pdev)
 	switch (func) {
 	case FUNC_SHUTDOWN:
 		vexpress_power_off_device = &pdev->dev;
-		pm_power_off = vexpress_power_off;
+		ret = register_poweroff_handler(&vexpress_poweroff_nb);
+		if (ret) {
+			dev_err(&pdev->dev,
+				"Failed to register poweroff handler\n");
+			return ret;
+		}
 		break;
 	case FUNC_RESET:
 		if (!vexpress_restart_device)
-- 
1.9.1

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