linux-kernel - [PATCH] platform/x86: quickstart: Use devm_mutex

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Message-ID: <530b930c981c436c172c0308b348d4ae4ef72800.1757251867.git.christophe.jaillet@wanadoo.fr>
Date: Sun,  7 Sep 2025 15:32:26 +0200
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: Armin Wolf <W_Armin@....de>,
	Hans de Goede <hansg@...nel.org>,
	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Cc: linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org,
	Christophe JAILLET <christophe.jaillet@...adoo.fr>,
	platform-driver-x86@...r.kernel.org
Subject: [PATCH] platform/x86: quickstart: Use devm_mutex_init()

Use devm_mutex_init() instead of hand-writing it.

This saves some LoC, improves readability and saves some space in the
generated .o file.

Before:
======
   text	   data	    bss	    dec	    hex	filename
   7607	   2616	     64	  10287	   282f	drivers/platform/x86/quickstart.o

After:
=====
   text	   data	    bss	    dec	    hex	filename
   7301	   2544	     64	   9909	   26b5	drivers/platform/x86/quickstart.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/platform/x86/quickstart.c | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/drivers/platform/x86/quickstart.c b/drivers/platform/x86/quickstart.c
index c332c7cdaff5..acb58518be37 100644
--- a/drivers/platform/x86/quickstart.c
+++ b/drivers/platform/x86/quickstart.c
@@ -154,13 +154,6 @@ static void quickstart_notify_remove(void *context)
 	acpi_remove_notify_handler(handle, ACPI_DEVICE_NOTIFY, quickstart_notify);
 }
 
-static void quickstart_mutex_destroy(void *data)
-{
-	struct mutex *lock = data;
-
-	mutex_destroy(lock);
-}
-
 static int quickstart_probe(struct platform_device *pdev)
 {
 	struct quickstart_data *data;
@@ -179,8 +172,7 @@ static int quickstart_probe(struct platform_device *pdev)
 	data->dev = &pdev->dev;
 	dev_set_drvdata(&pdev->dev, data);
 
-	mutex_init(&data->input_lock);
-	ret = devm_add_action_or_reset(&pdev->dev, quickstart_mutex_destroy, &data->input_lock);
+	ret = devm_mutex_init(&pdev->dev, &data->input_lock);
 	if (ret < 0)
 		return ret;
 
-- 
2.51.0