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authorJean Delvare <khali@linux-fr.org>2010-04-14 16:14:10 +0200
committerJean Delvare <khali@linux-fr.org>2010-04-14 16:14:10 +0200
commit2b3d1d87eaabf422a42440351ff3be1792d35852 (patch)
tree692f159899cfa29bb33c9394c1c6616a106a11a2 /drivers/hwmon
parent8acf07c5a7674e53f2d320d540aec5d714b105cf (diff)
hwmon: (it87) Invalidate cache on temperature sensor change
When any temperature sensor type is changed, the corresponding temperature value needs to be updated. The register caching mechanism may delay this update, so we want to invalidate the cache to force an immediate update. Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'drivers/hwmon')
-rw-r--r--drivers/hwmon/it87.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index a65ba31cad29..5be09c048c5f 100644
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -563,6 +563,7 @@ static ssize_t set_sensor(struct device *dev, struct device_attribute *attr,
mutex_lock(&data->update_lock);
data->sensor = reg;
it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
+ data->valid = 0; /* Force cache refresh */
mutex_unlock(&data->update_lock);
return count;
}