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leds: triggers: return error if invalid trigger name is provided via sysfs 

If an invalid trigger name is provided via sysfs currently no error
is returned. Therefore it's not possible to determine whether the
trigger was set successfully.
Fix this by returning -EINVAL if no trigger is matched.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
hifive-unleashed-5.1
Heiner Kallweit 2016-07-01 23:08:54 +02:00 committed by Jacek Anaszewski
parent b1ae40a5db
commit a3eac76cdf
1 changed files with 2 additions and 0 deletions
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2
drivers/leds/led-triggers.c
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@ -60,6 +60,8 @@ ssize_t led_trigger_store(struct device *dev, struct device_attribute *attr,
goto unlock;
}
}
/* we come here only if buf matches no trigger */
ret = -EINVAL;
up_read(&triggers_list_lock);
unlock: