linux-kernel - [PATCH 1/3] gpio: mockup: fix indicated direction

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20181108165255.9940-2-brgl@bgdev.pl>
Date:   Thu,  8 Nov 2018 17:52:53 +0100
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Bamvor Jian Zhang <bamv2005@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
Cc:     linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Bartosz Golaszewski <brgl@...ev.pl>
Subject: [PATCH 1/3] gpio: mockup: fix indicated direction

Commit 3edfb7bd76bd ("gpiolib: Show correct direction from the
beginning") fixed an existing issue but broke libgpiod tests by
changing the default direction of dummy lines to output.

We don't break user-space so make gpio-mockup behave as before.

Signed-off-by: Bartosz Golaszewski <brgl@...ev.pl>
---
 drivers/gpio/gpio-mockup.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpio/gpio-mockup.c b/drivers/gpio/gpio-mockup.c
index 8269cffc2967..6a50f9f59c90 100644
--- a/drivers/gpio/gpio-mockup.c
+++ b/drivers/gpio/gpio-mockup.c
@@ -35,8 +35,8 @@
 #define gpio_mockup_err(...)	pr_err(GPIO_MOCKUP_NAME ": " __VA_ARGS__)
 
 enum {
-	GPIO_MOCKUP_DIR_OUT = 0,
-	GPIO_MOCKUP_DIR_IN = 1,
+	GPIO_MOCKUP_DIR_IN = 0,
+	GPIO_MOCKUP_DIR_OUT = 1,
 };
 
 /*
@@ -131,7 +131,7 @@ static int gpio_mockup_get_direction(struct gpio_chip *gc, unsigned int offset)
 {
 	struct gpio_mockup_chip *chip = gpiochip_get_data(gc);
 
-	return chip->lines[offset].dir;
+	return !chip->lines[offset].dir;
 }
 
 static int gpio_mockup_to_irq(struct gpio_chip *gc, unsigned int offset)
-- 
2.19.1