linux-kernel - [PATCH] gpiolib: cdev: remove redundant store of debounce_period

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Message-Id: <20241020115238.170994-1-warthog618@gmail.com>
Date: Sun, 20 Oct 2024 19:52:38 +0800
From: Kent Gibson <warthog618@...il.com>
To: linux-kernel@...r.kernel.org,
	linux-gpio@...r.kernel.org,
	brgl@...ev.pl,
	linus.walleij@...aro.org
Cc: Kent Gibson <warthog618@...il.com>
Subject: [PATCH] gpiolib: cdev: remove redundant store of debounce_period_us

debounce_setup() stores the debounce_period_us if the driver supports
debounce, but the debounce_period_us is also stored where debounce_setup()
is called, independent of whether the debounce is being perfomed by
hardware or software.

Remove the redundant storing of the debounce_period_us in
debounce_setup().

Signed-off-by: Kent Gibson <warthog618@...il.com>
---

Based on gpio/for-next with v5 of your recent notify series.

 drivers/gpio/gpiolib-cdev.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/gpio/gpiolib-cdev.c b/drivers/gpio/gpiolib-cdev.c
index 13d83675bf4f..0ec162b0ea04 100644
--- a/drivers/gpio/gpiolib-cdev.c
+++ b/drivers/gpio/gpiolib-cdev.c
@@ -929,10 +929,6 @@ static int debounce_setup(struct line *line, unsigned int debounce_period_us)
 	ret = gpio_do_set_config(line->desc,
 			pinconf_to_config_packed(PIN_CONFIG_INPUT_DEBOUNCE,
 						 debounce_period_us));
-	if (!ret) {
-		WRITE_ONCE(line->desc->debounce_period_us, debounce_period_us);
-		return ret;
-	}
 	if (ret != -ENOTSUPP)
 		return ret;
 

base-commit: 94fe8eced6e1448378bb368c9f14c9af510670d4
-- 
2.39.5