linux-kernel - [PATCH 1/3] gpio: deprecate the GPIOD_FLAGS_BIT

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Message-Id: <20250331-gpio-todo-remove-nonexclusive-v1-1-25f72675f304@linaro.org>
Date: Mon, 31 Mar 2025 11:00:09 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH 1/3] gpio: deprecate the GPIOD_FLAGS_BIT_NONEXCLUSIVE flag

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

The non-exclusive GPIO request flag looks like a functional feature but
is in fact a bad workaround for a corner-case that got out of hand. It
should be removed so deprecate it officially so that nobody uses it
anymore.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
 include/linux/gpio/consumer.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h
index 45b651c05b9c8..8adc8e9cb4a7b 100644
--- a/include/linux/gpio/consumer.h
+++ b/include/linux/gpio/consumer.h
@@ -31,6 +31,7 @@ struct gpio_descs {
 #define GPIOD_FLAGS_BIT_DIR_OUT		BIT(1)
 #define GPIOD_FLAGS_BIT_DIR_VAL		BIT(2)
 #define GPIOD_FLAGS_BIT_OPEN_DRAIN	BIT(3)
+/* GPIOD_FLAGS_BIT_NONEXCLUSIVE is DEPRECATED, don't use in new code. */
 #define GPIOD_FLAGS_BIT_NONEXCLUSIVE	BIT(4)
 
 /**

-- 
2.45.2