hwmon: (lm90) Use bool for valid flag

Use bool for valid flag and leave it up to the compiler to find
an optimal representation.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index 322a73d..c38d6e4 100644 (file)
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -367,7 +367,7 @@ struct lm90_data {
        struct i2c_client *client;
        const struct attribute_group *groups[6];
        struct mutex update_lock;
-       char valid; /* zero until following fields are valid */
+       bool valid;             /* true if register values are valid */
        unsigned long last_updated; /* in jiffies */
        int kind;
        u32 flags;
@@ -624,7 +624,7 @@ static struct lm90_data *lm90_update_device(struct device *dev)
        if (time_after(jiffies, next_update) || !data->valid) {
                dev_dbg(&client->dev, "Updating lm90 data.\n");
 
-               data->valid = 0;
+               data->valid = false;
 
                val = lm90_read_reg(client, LM90_REG_R_LOCAL_LOW);
                if (val < 0)
@@ -697,7 +697,7 @@ static struct lm90_data *lm90_update_device(struct device *dev)
                }
 
                data->last_updated = jiffies;
-               data->valid = 1;
+               data->valid = true;
        }
 
 error: