hwmon: (w83627hf) Enable VBAT monitoring

If VBAT monitoring is disabled, enable it. Bug reported on the
lm-sensors trac system:
http://lm-sensors.org/ticket/2282
This is the exact same patch that was applied to the w83627ehf driver
6 months ago.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/hwmon/w83627hf.c b/drivers/hwmon/w83627hf.c
index 181f4e8590b1..185ae1b8027d 100644
--- a/drivers/hwmon/w83627hf.c
+++ b/drivers/hwmon/w83627hf.c
@@ -1515,6 +1515,11 @@ static void __devinit w83627hf_init_device(struct platform_device *pdev)
                             (w83627hf_read_value(data,
                                                 W83781D_REG_CONFIG) & 0xf7)
                             | 0x01);
+
+        /* Enable VBAT monitoring if needed */
+        tmp = w83627hf_read_value(data, W83781D_REG_VBAT);
+        if (!(tmp & 0x01))
+                w83627hf_write_value(data, W83781D_REG_VBAT, tmp | 0x01);
 }
 
 static void w83627hf_update_fan_div(struct w83627hf_data *data)