linux-kernel - [PATCH v2 1/8] gpiolib: Make taking gpio_lookup

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Message-ID: <20250416095645.2027695-2-andriy.shevchenko@linux.intel.com>
Date: Wed, 16 Apr 2025 12:55:09 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
	linux-gpio@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...ev.pl>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v2 1/8] gpiolib: Make taking gpio_lookup_lock consistent

There are two ways to take a lock: plain call to the mutex_lock()
or using guard()() / scoped_guard(). The driver inconsistently uses
both. Make taking gpio_lookup_lock consistent.

Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/gpio/gpiolib.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index b8993d2d31e1..7d9cc1a9c535 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -4363,12 +4363,10 @@ void gpiod_add_lookup_tables(struct gpiod_lookup_table **tables, size_t n)
 {
 	unsigned int i;
 
-	mutex_lock(&gpio_lookup_lock);
+	guard(mutex)(&gpio_lookup_lock);
 
 	for (i = 0; i < n; i++)
 		list_add_tail(&tables[i]->list, &gpio_lookup_list);
-
-	mutex_unlock(&gpio_lookup_lock);
 }
 
 /**
@@ -4427,11 +4425,9 @@ void gpiod_remove_lookup_table(struct gpiod_lookup_table *table)
 	if (!table)
 		return;
 
-	mutex_lock(&gpio_lookup_lock);
+	guard(mutex)(&gpio_lookup_lock);
 
 	list_del(&table->list);
-
-	mutex_unlock(&gpio_lookup_lock);
 }
 EXPORT_SYMBOL_GPL(gpiod_remove_lookup_table);
 
-- 
2.47.2