linux-kernel - [PATCH v2 07/12] rtc: nxp-bbnsm: Use resource managed API to simplify code

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Message-Id: <20250103-wake_irq-v2-7-e3aeff5e9966@nxp.com>
Date: Fri, 03 Jan 2025 16:41:19 +0800
From: "Peng Fan (OSS)" <peng.fan@....nxp.com>
To: "Rafael J. Wysocki" <rafael@...nel.org>, 
 Len Brown <len.brown@...el.com>, Pavel Machek <pavel@....cz>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Dmitry Torokhov <dmitry.torokhov@...il.com>, 
 Alexandre Belloni <alexandre.belloni@...tlin.com>, 
 Maxime Coquelin <mcoquelin.stm32@...il.com>, 
 Alexandre Torgue <alexandre.torgue@...s.st.com>, 
 Linus Walleij <linus.walleij@...aro.org>, 
 Conor Dooley <conor.dooley@...rochip.com>, 
 Daire McNamara <daire.mcnamara@...rochip.com>
Cc: linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-input@...r.kernel.org, linux-rtc@...r.kernel.org, 
 linux-stm32@...md-mailman.stormreply.com, 
 linux-arm-kernel@...ts.infradead.org, linux-arm-msm@...r.kernel.org, 
 linux-riscv@...ts.infradead.org, Peng Fan <peng.fan@....com>
Subject: [PATCH v2 07/12] rtc: nxp-bbnsm: Use resource managed API to
 simplify code

From: Peng Fan <peng.fan@....com>

Use devm_pm_set_wake_irq and devm_device_init_wakeup to cleanup the
error handling code and 'driver.remove()' hook.

Signed-off-by: Peng Fan <peng.fan@....com>
---
 drivers/rtc/rtc-nxp-bbnsm.c | 29 +++++++++--------------------
 1 file changed, 9 insertions(+), 20 deletions(-)

diff --git a/drivers/rtc/rtc-nxp-bbnsm.c b/drivers/rtc/rtc-nxp-bbnsm.c
index fa3b0328c7a255ff8a902a58d61a4b0e59eac493..d4fc9dc583d317d4852b7d897a6c45cfff6961a2 100644
--- a/drivers/rtc/rtc-nxp-bbnsm.c
+++ b/drivers/rtc/rtc-nxp-bbnsm.c
@@ -189,36 +189,26 @@ static int bbnsm_rtc_probe(struct platform_device *pdev)
 	/* clear all the pending events */
 	regmap_write(bbnsm->regmap, BBNSM_EVENTS, 0x7A);

-	device_init_wakeup(&pdev->dev, true);
-	dev_pm_set_wake_irq(&pdev->dev, bbnsm->irq);
+	ret = devm_device_init_wakeup(&pdev->dev);
+	if (ret)
+		dev_err(&pdev->dev, "failed to init wakeup, %d\n", ret);
+
+	ret = devm_pm_set_wake_irq(&pdev->dev, bbnsm->irq);
+	if (ret)
+		dev_err(&pdev->dev, "failed to set wake irq, %d\n", ret);

 	ret = devm_request_irq(&pdev->dev, bbnsm->irq, bbnsm_rtc_irq_handler,
 			       IRQF_SHARED, "rtc alarm", &pdev->dev);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to request irq %d: %d\n",
 			bbnsm->irq, ret);
-		goto err;
+		return ret;
 	}

 	bbnsm->rtc->ops = &bbnsm_rtc_ops;
 	bbnsm->rtc->range_max = U32_MAX;

-	ret = devm_rtc_register_device(bbnsm->rtc);
-	if (ret)
-		goto err;
-
-	return 0;
-
-err:
-	dev_pm_clear_wake_irq(&pdev->dev);
-	device_init_wakeup(&pdev->dev, false);
-	return ret;
-}
-
-static void bbnsm_rtc_remove(struct platform_device *pdev)
-{
-	dev_pm_clear_wake_irq(&pdev->dev);
-	device_init_wakeup(&pdev->dev, false);
+	return devm_rtc_register_device(bbnsm->rtc);
 }

 static const struct of_device_id bbnsm_dt_ids[] = {
@@ -233,7 +223,6 @@ static struct platform_driver bbnsm_rtc_driver = {
 		.of_match_table = bbnsm_dt_ids,
 	},
 	.probe = bbnsm_rtc_probe,
-	.remove = bbnsm_rtc_remove,
 };
 module_platform_driver(bbnsm_rtc_driver);

-- 
2.37.1