linux-kernel - [PATCH 14/19] gpio: xtensa: remove unneeded .set() callback

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Message-Id: <20250709-gpiochip-set-rv-gpio-remaining-v1-14-b8950f69618d@linaro.org>
Date: Wed, 09 Jul 2025 08:41:51 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>, 
 Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>, 
 Andy Shevchenko <andy@...nel.org>, 
 Shubhrajyoti Datta <shubhrajyoti.datta@....com>, 
 Srinivas Neeli <srinivas.neeli@....com>, 
 Michal Simek <michal.simek@....com>, Nandor Han <nandor.han@...com>
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 patches@...nsource.cirrus.com, linux-arm-kernel@...ts.infradead.org, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH 14/19] gpio: xtensa: remove unneeded .set() callback

From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>

GPIO core deals just fine with input-only controllers not implementing
the .set() callback. Remove the unneeded dummy implementation.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
 drivers/gpio/gpio-xtensa.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/drivers/gpio/gpio-xtensa.c b/drivers/gpio/gpio-xtensa.c
index c8af34a6368f4f69f9960fff7f8c27a2c8ddea8b..341b691ac2345b93320a6e8b933444d26dcf50e6 100644
--- a/drivers/gpio/gpio-xtensa.c
+++ b/drivers/gpio/gpio-xtensa.c
@@ -86,12 +86,6 @@ static int xtensa_impwire_get_value(struct gpio_chip *gc, unsigned offset)
 	return !!(impwire & BIT(offset));
 }
 
-static void xtensa_impwire_set_value(struct gpio_chip *gc, unsigned offset,
-				    int value)
-{
-	BUG(); /* output only; should never be called */
-}
-
 static int xtensa_expstate_get_direction(struct gpio_chip *gc, unsigned offset)
 {
 	return GPIO_LINE_DIRECTION_OUT; /* output only */
@@ -128,7 +122,6 @@ static struct gpio_chip impwire_chip = {
 	.ngpio		= 32,
 	.get_direction	= xtensa_impwire_get_direction,
 	.get		= xtensa_impwire_get_value,
-	.set		= xtensa_impwire_set_value,
 };
 
 static struct gpio_chip expstate_chip = {

-- 
2.48.1