linux-kernel - [PATCH] gpio: cdev: don't report GPIOs requested as interrupts as used

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Message-ID: <20241031200842.22712-1-brgl@bgdev.pl>
Date: Thu, 31 Oct 2024 21:08:41 +0100
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Linus Walleij <linus.walleij@...aro.org>,
	Kent Gibson <warthog618@...il.com>
Cc: linux-gpio@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH] gpio: cdev: don't report GPIOs requested as interrupts as used

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

GPIOs used as shared irqs can still be requested by user-space (or
kernel drivers for that matter) yet we report them as used over the
chardev ABI. Drop the test for FLAG_USED_AS_IRQ from
gpio_desc_to_lineinfo().

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

diff --git a/drivers/gpio/gpiolib-cdev.c b/drivers/gpio/gpiolib-cdev.c
index 0ec162b0ea04..629e9372fd57 100644
--- a/drivers/gpio/gpiolib-cdev.c
+++ b/drivers/gpio/gpiolib-cdev.c
@@ -2275,7 +2275,6 @@ static void gpio_desc_to_lineinfo(struct gpio_desc *desc,
 	 */
 	if (test_bit(FLAG_REQUESTED, &dflags) ||
 	    test_bit(FLAG_IS_HOGGED, &dflags) ||
-	    test_bit(FLAG_USED_AS_IRQ, &dflags) ||
 	    test_bit(FLAG_EXPORT, &dflags) ||
 	    test_bit(FLAG_SYSFS, &dflags) ||
 	    !gpiochip_line_is_valid(guard.gc, info->offset)) {
-- 
2.45.2