diff options
Diffstat (limited to 'drivers/hwmon/adm9240.c')
| -rw-r--r-- | drivers/hwmon/adm9240.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/hwmon/adm9240.c b/drivers/hwmon/adm9240.c index 483cd757abd3..40e3558d3709 100644 --- a/drivers/hwmon/adm9240.c +++ b/drivers/hwmon/adm9240.c @@ -501,17 +501,23 @@ static int adm9240_fan_read(struct device *dev, u32 attr, int channel, long *val switch (attr) { case hwmon_fan_input: + mutex_lock(&data->update_lock); err = regmap_read(data->regmap, ADM9240_REG_FAN(channel), ®val); - if (err < 0) + if (err < 0) { + mutex_unlock(&data->update_lock); return err; + } if (regval == 255 && data->fan_div[channel] < 3) { /* adjust fan clock divider on overflow */ err = adm9240_write_fan_div(data, channel, ++data->fan_div[channel]); - if (err) + if (err) { + mutex_unlock(&data->update_lock); return err; + } } *val = FAN_FROM_REG(regval, BIT(data->fan_div[channel])); + mutex_unlock(&data->update_lock); break; case hwmon_fan_div: *val = BIT(data->fan_div[channel]); |