hwmon: (ds620) Fix handling of negative temperatures

commit cc41d586e8b4d76164fe7731c1c49be6cc5fc7e6 upstream.

Signed (negative) temperatures were not handled correctly.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/hwmon/ds620.c b/drivers/hwmon/ds620.c
index 257957c..4f7c3fc 100644
--- a/drivers/hwmon/ds620.c
+++ b/drivers/hwmon/ds620.c
@@ -72,7 +72,7 @@
 	char valid;		/* !=0 if following fields are valid */
 	unsigned long last_updated;	/* In jiffies */
 
-	u16 temp[3];		/* Register values, word */
+	s16 temp[3];		/* Register values, word */
 };
 
 /*