backlight: use kstrtoul()

[pandora-kernel.git] / drivers / video / backlight / lcd.c

diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c
index 71a11ca..79c1b0d 100644 (file)
--- a/drivers/video/backlight/lcd.c
+++ b/drivers/video/backlight/lcd.c
@@ -97,19 +97,16 @@ static ssize_t lcd_store_power(struct device *dev,
                struct device_attribute *attr, const char *buf, size_t count)
 {
        int rc = -ENXIO;
-       char *endp;
        struct lcd_device *ld = to_lcd_device(dev);
-       int power = simple_strtoul(buf, &endp, 0);
-       size_t size = endp - buf;
+       unsigned long power;
 
-       if (isspace(*endp))
-               size++;
-       if (size != count)
-               return -EINVAL;
+       rc = kstrtoul(buf, 0, &power);
+       if (rc)
+               return rc;
 
        mutex_lock(&ld->ops_lock);
        if (ld->ops && ld->ops->set_power) {
-               pr_debug("lcd: set power to %d\n", power);
+               pr_debug("lcd: set power to %lu\n", power);
                ld->ops->set_power(ld, power);
                rc = count;
        }
@@ -136,19 +133,16 @@ static ssize_t lcd_store_contrast(struct device *dev,
                struct device_attribute *attr, const char *buf, size_t count)
 {
        int rc = -ENXIO;
-       char *endp;
        struct lcd_device *ld = to_lcd_device(dev);
-       int contrast = simple_strtoul(buf, &endp, 0);
-       size_t size = endp - buf;
+       unsigned long contrast;
 
-       if (isspace(*endp))
-               size++;
-       if (size != count)
-               return -EINVAL;
+       rc = kstrtoul(buf, 0, &contrast);
+       if (rc)
+               return rc;
 
        mutex_lock(&ld->ops_lock);
        if (ld->ops && ld->ops->set_contrast) {
-               pr_debug("lcd: set contrast to %d\n", contrast);
+               pr_debug("lcd: set contrast to %lu\n", contrast);
                ld->ops->set_contrast(ld, contrast);
                rc = count;
        }