staging: iio: tsl2x7x: add range checking to three sysfs attributes

The sysfs attributes in_illuminance0_target_input,
in_illuminance0_calibrate, and in_proximity0_calibrate did not have
proper range checking in place so this patch adds the correct range
checks.

Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/staging/iio/light/tsl2x7x.c b/drivers/staging/iio/light/tsl2x7x.c
index 01bff45..b4d77f6 100644 (file)
--- a/drivers/staging/iio/light/tsl2x7x.c
+++ b/drivers/staging/iio/light/tsl2x7x.c
@@ -814,15 +814,13 @@ static ssize_t in_illuminance0_target_input_store(struct device *dev,
 {
        struct iio_dev *indio_dev = dev_to_iio_dev(dev);
        struct tsl2X7X_chip *chip = iio_priv(indio_dev);
-       unsigned long value;
+       u16 value;
        int ret;
 
-       if (kstrtoul(buf, 0, &value))
+       if (kstrtou16(buf, 0, &value))
                return -EINVAL;
 
-       if (value)
-               chip->settings.als_cal_target = value;
-
+       chip->settings.als_cal_target = value;
        ret = tsl2x7x_invoke_change(indio_dev);
        if (ret < 0)
                return ret;
@@ -838,14 +836,12 @@ static ssize_t in_illuminance0_calibrate_store(struct device *dev,
        bool value;
        int ret;
 
-       if (strtobool(buf, &value))
+       if (kstrtobool(buf, &value) || !value)
                return -EINVAL;
 
-       if (value) {
-               ret = tsl2x7x_als_calibrate(indio_dev);
-               if (ret < 0)
-                       return ret;
-       }
+       ret = tsl2x7x_als_calibrate(indio_dev);
+       if (ret < 0)
+               return ret;
 
        ret = tsl2x7x_invoke_change(indio_dev);
        if (ret < 0)
@@ -932,14 +928,12 @@ static ssize_t in_proximity0_calibrate_store(struct device *dev,
        bool value;
        int ret;
 
-       if (strtobool(buf, &value))
+       if (kstrtobool(buf, &value) || !value)
                return -EINVAL;
 
-       if (value) {
-               ret = tsl2x7x_prox_cal(indio_dev);
-               if (ret < 0)
-                       return ret;
-       }
+       ret = tsl2x7x_prox_cal(indio_dev);
+       if (ret < 0)
+               return ret;
 
        ret = tsl2x7x_invoke_change(indio_dev);
        if (ret < 0)