[PATCH v4 10/19] power: reset: rmobile-reset: Use devm_register_sys_off_handler(RESTART)

[Andrew Davis]

Use device life-cycle managed register function to simplify probe and
exit paths.

Signed-off-by: Andrew Davis <afd@xxxxxx>
---
 drivers/power/reset/rmobile-reset.c | 22 ++++++----------------
 1 file changed, 6 insertions(+), 16 deletions(-)

diff --git a/drivers/power/reset/rmobile-reset.c b/drivers/power/reset/rmobile-reset.c
index 29c17ed2d4de9..80265608c18e0 100644
--- a/drivers/power/reset/rmobile-reset.c
+++ b/drivers/power/reset/rmobile-reset.c
@@ -21,22 +21,14 @@
 
 static void __iomem *sysc_base2;
 
-static int rmobile_reset_handler(struct notifier_block *this,
-				 unsigned long mode, void *cmd)
+static int rmobile_reset_handler(struct sys_off_data *data)
 {
-	pr_debug("%s %lu\n", __func__, mode);
-
 	/* Let's assume we have acquired the HPB semaphore */
 	writel(RESCNT2_PRES, sysc_base2 + RESCNT2);
 
 	return NOTIFY_DONE;
 }
 
-static struct notifier_block rmobile_reset_nb = {
-	.notifier_call = rmobile_reset_handler,
-	.priority = 192,
-};
-
 static int rmobile_reset_probe(struct platform_device *pdev)
 {
 	int error;
@@ -45,7 +37,11 @@ static int rmobile_reset_probe(struct platform_device *pdev)
 	if (IS_ERR(sysc_base2))
 		return PTR_ERR(sysc_base2);
 
-	error = register_restart_handler(&rmobile_reset_nb);
+	error = devm_register_sys_off_handler(&pdev->dev,
+					      SYS_OFF_MODE_RESTART,
+					      SYS_OFF_PRIO_HIGH,
+					      rmobile_reset_handler,
+					      NULL);
 	if (error) {
 		dev_err(&pdev->dev,
 			"cannot register restart handler (err=%d)\n", error);
@@ -55,11 +51,6 @@ static int rmobile_reset_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static void rmobile_reset_remove(struct platform_device *pdev)
-{
-	unregister_restart_handler(&rmobile_reset_nb);
-}
-
 static const struct of_device_id rmobile_reset_of_match[] = {
 	{ .compatible = "renesas,sysc-rmobile", },
 	{ /* sentinel */ }
@@ -68,7 +59,6 @@ MODULE_DEVICE_TABLE(of, rmobile_reset_of_match);
 
 static struct platform_driver rmobile_reset_driver = {
 	.probe = rmobile_reset_probe,
-	.remove_new = rmobile_reset_remove,
 	.driver = {
 		.name = "rmobile_reset",
 		.of_match_table = rmobile_reset_of_match,
-- 
2.39.2