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>

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>
Jean Delvare
1 parent 8acf07c5a7
Showing 1 changed file with 1 additions and 0 deletions Side-by-side Diff
drivers/hwmon/it87.c
@@ -563,6 +563,7 @@
 	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;
 }
...	...	@@ -563,6 +563,7 @@
563	563	mutex_lock(&data->update_lock);
564	564	data->sensor = reg;
565	565	it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
	566	+ data->valid = 0; /* Force cache refresh */
566	567	mutex_unlock(&data->update_lock);
567	568	return count;
568	569	}