linux-kernel - [PATCH] staging: greybus: remove unnecessary GPIO line direction check

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Message-ID: <20250610152036.86099-1-brgl@bgdev.pl>
Date: Tue, 10 Jun 2025 17:20:36 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Rui Miguel Silva <rmfrfs@...il.com>,
	Johan Hovold <johan@...nel.org>,
	Alex Elder <elder@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: greybus-dev@...ts.linaro.org,
	linux-staging@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH] staging: greybus: remove unnecessary GPIO line direction check

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

As of commit 92ac7de3175e3 ("gpiolib: don't allow setting values on input
lines"), the GPIO core makes sure values cannot be set on input lines.
Remove the unnecessary check.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
 drivers/staging/greybus/gpio.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/staging/greybus/gpio.c b/drivers/staging/greybus/gpio.c
index f81c34160f720..1280530c8987a 100644
--- a/drivers/staging/greybus/gpio.c
+++ b/drivers/staging/greybus/gpio.c
@@ -192,12 +192,6 @@ static int gb_gpio_set_value_operation(struct gb_gpio_controller *ggc,
 	struct gb_gpio_set_value_request request;
 	int ret;
 
-	if (ggc->lines[which].direction == 1) {
-		dev_warn(dev, "refusing to set value of input gpio %u\n",
-			 which);
-		return -EPERM;
-	}
-
 	request.which = which;
 	request.value = value_high ? 1 : 0;
 	ret = gb_operation_sync(ggc->connection, GB_GPIO_TYPE_SET_VALUE,
-- 
2.48.1