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

[Guenter Roeck <linux@xxxxxxxxxxxx>]

Register with kernel poweroff handler instead of setting pm_power_off
directly.

Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
 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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