From e3274e915061a65717454106301d4a5ea8f71783 Mon Sep 17 00:00:00 2001 From: "Steven A. Falco" Date: Sat, 18 Oct 2008 20:27:48 -0700 Subject: [PATCH] gpio: modify sysfs gpio export so that "value" displays as 0 or 1 gpiolib can export GPIOs to userspace via sysfs. This patch modifies the gpio_value_show() so that any non-zero value is explicitly printed as "1", rather than whatever numerical value the lower-level driver returns. Signed-off-by: Steve Falco Signed-off-by: David Brownell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/gpio/gpiolib.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 9112830107a5..70de72c443e4 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -248,7 +248,7 @@ static ssize_t gpio_value_show(struct device *dev, if (!test_bit(FLAG_EXPORT, &desc->flags)) status = -EIO; else - status = sprintf(buf, "%d\n", gpio_get_value_cansleep(gpio)); + status = sprintf(buf, "%d\n", !!gpio_get_value_cansleep(gpio)); mutex_unlock(&sysfs_lock); return status; -- GitLab