linux-kernel - [PATCH v2 13/19] power: reset: msm-poweroff: Use devm_register_sys_off

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Date: Mon, 5 Feb 2024 13:44:31 -0600
From: Andrew Davis <afd@...com>
To: Sebastian Reichel <sre@...nel.org>,
        Manivannan Sadhasivam
	<manivannan.sadhasivam@...aro.org>,
        Cristian Ciocaltea
	<cristian.ciocaltea@...il.com>,
        Florian Fainelli
	<florian.fainelli@...adcom.com>,
        Ray Jui <rjui@...adcom.com>, Scott Branden
	<sbranden@...adcom.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad
 Dybcio <konrad.dybcio@...aro.org>,
        Sean Wang <sean.wang@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno
	<angelogioacchino.delregno@...labora.com>
CC: <linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-actions@...ts.infradead.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>, Andrew Davis <afd@...com>
Subject: [PATCH v2 13/19] power: reset: msm-poweroff: Use devm_register_sys_off_handler(RESTART)

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

Signed-off-by: Andrew Davis <afd@...com>
---
 drivers/power/reset/msm-poweroff.c | 23 ++++++-----------------
 1 file changed, 6 insertions(+), 17 deletions(-)

diff --git a/drivers/power/reset/msm-poweroff.c b/drivers/power/reset/msm-poweroff.c
index bcf04491e7022..c5831c46f69e2 100644
--- a/drivers/power/reset/msm-poweroff.c
+++ b/drivers/power/reset/msm-poweroff.c
@@ -13,35 +13,24 @@
 #include <linux/reboot.h>
 #include <linux/pm.h>
 
-static void __iomem *msm_ps_hold;
-static int deassert_pshold(struct notifier_block *nb, unsigned long action,
-			   void *data)
+static int do_msm_poweroff(struct sys_off_data *data)
 {
+	void __iomem *msm_ps_hold = data->cb_data;
+
 	writel(0, msm_ps_hold);
 	mdelay(10000);
 
 	return NOTIFY_DONE;
 }
 
-static struct notifier_block restart_nb = {
-	.notifier_call = deassert_pshold,
-	.priority = 128,
-};
-
-static int do_msm_poweroff(struct sys_off_data *data)
-{
-	deassert_pshold(&restart_nb, 0, NULL);
-
-	return NOTIFY_DONE;
-}
-
 static int msm_restart_probe(struct platform_device *pdev)
 {
-	msm_ps_hold = devm_platform_ioremap_resource(pdev, 0);
+	void __iomem *msm_ps_hold = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(msm_ps_hold))
 		return PTR_ERR(msm_ps_hold);
 
-	register_restart_handler(&restart_nb);
+	devm_register_sys_off_handler(&pdev->dev, SYS_OFF_MODE_RESTART,
+				      128, do_msm_poweroff, msm_ps_hold);
 
 	devm_register_sys_off_handler(&pdev->dev, SYS_OFF_MODE_POWER_OFF,
 				      SYS_OFF_PRIO_DEFAULT, do_msm_poweroff,
-- 
2.39.2