diff options
| author | Jon Povey <jon.povey@racelogic.co.uk> | 2010-07-27 13:18:06 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-07-27 14:32:07 -0700 |
| commit | 6a99ad4a2e1b1693ffe8e40cc0dddfc633ce2a50 (patch) | |
| tree | 7125466673bfe462b3ffbaf85b31cb66906d22cd /drivers/gpio/gpiolib.c | |
| parent | 952e1c6632ab5060a2323624d2908f31d62fc0a3 (diff) | |
| download | blackbird-op-linux-6a99ad4a2e1b1693ffe8e40cc0dddfc633ce2a50.tar.gz blackbird-op-linux-6a99ad4a2e1b1693ffe8e40cc0dddfc633ce2a50.zip | |
gpio: fix spurious printk when freeing a gpio
When freeing a gpio that has not been exported, gpio_unexport() prints a
debug message when it should just fall through silently.
Example spurious message:
gpio_unexport: gpio0 status -22
Signed-off-by: Jon Povey <jon.povey@racelogic.co.uk>
Cc: David Brownell <david-b@pacbell.net>
Acked-by: Uwe Kleine-K?nig <u.kleine-koenig@pengutronix.de>
Cc: Gregory Bean <gbean@codeaurora.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/gpio/gpiolib.c')
| -rw-r--r-- | drivers/gpio/gpiolib.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 3ca36542e338..4e51fe3c1fc4 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -893,10 +893,12 @@ EXPORT_SYMBOL_GPL(gpio_sysfs_set_active_low); void gpio_unexport(unsigned gpio) { struct gpio_desc *desc; - int status = -EINVAL; + int status = 0; - if (!gpio_is_valid(gpio)) + if (!gpio_is_valid(gpio)) { + status = -EINVAL; goto done; + } mutex_lock(&sysfs_lock); @@ -911,7 +913,6 @@ void gpio_unexport(unsigned gpio) clear_bit(FLAG_EXPORT, &desc->flags); put_device(dev); device_unregister(dev); - status = 0; } else status = -ENODEV; } |
