linux-kernel - [PATCH V3] Input: bbnsm_pwrkey

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Message-Id: <20241209075733.2504229-1-peng.fan@oss.nxp.com>
Date: Mon,  9 Dec 2024 15:57:33 +0800
From: "Peng Fan (OSS)" <peng.fan@....nxp.com>
To: dmitry.torokhov@...il.com
Cc: Frank.Li@....com,
	ping.bai@....com,
	linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Peng Fan <peng.fan@....com>,
	Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH V3] Input: bbnsm_pwrkey - add remove hook

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

Without remove hook to clear wake irq, there will be kernel dump when
doing module test.
"bbnsm_pwrkey 44440000.bbnsm:pwrkey: wake irq already initialized"

Add remove hook to clear wake irq and set wakeup to false.

Fixes: 40e40fdfec3f ("Input: bbnsm_pwrkey - add bbnsm power key support")
Cc: Christophe JAILLET <christophe.jaillet@...adoo.fr>
Signed-off-by: Peng Fan <peng.fan@....com>
---

V3:
 I tried to dev_pm_clear_wake_irq in common code, but Greg rejected:
 https://lore.kernel.org/all/2024111213-eradicate-puma-3592@gregkh/
 So post v3 with input_unregister_device dropped

V2:
Per Christophe JAILLET
 Use remove, not remove_new
 Drop checking bbnsm pointer in remove

 drivers/input/misc/nxp-bbnsm-pwrkey.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/input/misc/nxp-bbnsm-pwrkey.c b/drivers/input/misc/nxp-bbnsm-pwrkey.c
index eb4173f9c820..63818956e376 100644
--- a/drivers/input/misc/nxp-bbnsm-pwrkey.c
+++ b/drivers/input/misc/nxp-bbnsm-pwrkey.c
@@ -187,6 +187,14 @@ static int bbnsm_pwrkey_probe(struct platform_device *pdev)
 	return 0;
 }
 
+static void bbnsm_pwrkey_remove(struct platform_device *pdev)
+{
+	struct bbnsm_pwrkey *bbnsm = platform_get_drvdata(pdev);
+
+	dev_pm_clear_wake_irq(&pdev->dev);
+	device_init_wakeup(&pdev->dev, false);
+}
+
 static int __maybe_unused bbnsm_pwrkey_suspend(struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);
@@ -223,6 +231,8 @@ static struct platform_driver bbnsm_pwrkey_driver = {
 		.of_match_table = bbnsm_pwrkey_ids,
 	},
 	.probe = bbnsm_pwrkey_probe,
+	.remove = bbnsm_pwrkey_remove,
+
 };
 module_platform_driver(bbnsm_pwrkey_driver);
 
-- 
2.37.1