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| author | Steven A. Falco <sfalco@harris.com> | 2008-10-18 20:27:48 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-20 08:52:36 -0700 |
| commit | e3274e915061a65717454106301d4a5ea8f71783 (patch) | |
| tree | e88cb4ef896fe2f4e38b58ed1b0d2f2e543c70cb | |
| parent | c8fc40cd345bfd88d8a98e7916909b9143502999 (diff) | |
| download | linux-e3274e915061a65717454106301d4a5ea8f71783.tar.gz linux-e3274e915061a65717454106301d4a5ea8f71783.tar.bz2 linux-e3274e915061a65717454106301d4a5ea8f71783.zip | |
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 <sfalco@harris.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | drivers/gpio/gpiolib.c | 2 |
1 files changed, 1 insertions, 1 deletions
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; |