diff options
| author | Janusz Krzysztofik <jkrzyszt@tis.icnet.pl> | 2011-01-20 14:44:29 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-20 17:02:06 -0800 |
| commit | cc587ece12791d001095488bf060fac52f657ea9 (patch) | |
| tree | 307ac86f764f4077b3454ad84f0908b528a6184b /drivers/leds | |
| parent | c1fc8675c9e3dede8e7cd91cebb2025e2e6db2dc (diff) | |
| download | lwn-cc587ece12791d001095488bf060fac52f657ea9.tar.gz lwn-cc587ece12791d001095488bf060fac52f657ea9.zip | |
drivers/leds/ledtrig-gpio.c: make output match input, tighten input checking
Replicate changes made to drivers/leds/ledtrig-backlight.c.
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/leds')
| -rw-r--r-- | drivers/leds/ledtrig-gpio.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/leds/ledtrig-gpio.c b/drivers/leds/ledtrig-gpio.c index 991d93be0f44..ecc4bf3f37a9 100644 --- a/drivers/leds/ledtrig-gpio.c +++ b/drivers/leds/ledtrig-gpio.c @@ -99,7 +99,7 @@ static ssize_t gpio_trig_inverted_show(struct device *dev, struct led_classdev *led = dev_get_drvdata(dev); struct gpio_trig_data *gpio_data = led->trigger_data; - return sprintf(buf, "%s\n", gpio_data->inverted ? "yes" : "no"); + return sprintf(buf, "%u\n", gpio_data->inverted); } static ssize_t gpio_trig_inverted_store(struct device *dev, @@ -107,16 +107,17 @@ static ssize_t gpio_trig_inverted_store(struct device *dev, { struct led_classdev *led = dev_get_drvdata(dev); struct gpio_trig_data *gpio_data = led->trigger_data; - unsigned inverted; + unsigned long inverted; int ret; - ret = sscanf(buf, "%u", &inverted); - if (ret < 1) { - dev_err(dev, "invalid value\n"); + ret = strict_strtoul(buf, 10, &inverted); + if (ret < 0) + return ret; + + if (inverted > 1) return -EINVAL; - } - gpio_data->inverted = !!inverted; + gpio_data->inverted = inverted; /* After inverting, we need to update the LED. */ schedule_work(&gpio_data->work); |