From: Josef Gajdusek <atx@atx.name>
Date: Sun, 11 May 2014 12:40:44 +0000 (+0200)
Subject: hwmon: (emc1403) fix inverted store_hyst()
X-Git-Tag: v3.2.60~28
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=73b674fba353d3e37c1d26d5f5e5a34fa4104a9b;p=pandora-kernel.git

hwmon: (emc1403) fix inverted store_hyst()

commit 17c048fc4bd95efea208a1920f169547d8588f1f upstream.

Attempts to set the hysteresis value to a temperature below the target
limit fails with "write error: Numerical result out of range" due to
an inverted comparison.

Signed-off-by: Josef Gajdusek <atx@atx.name>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
[Guenter Roeck: Updated headline and description]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

diff --git a/drivers/hwmon/emc1403.c b/drivers/hwmon/emc1403.c
index cd2a6e437aec..966fa79c7a97 100644
--- a/drivers/hwmon/emc1403.c
+++ b/drivers/hwmon/emc1403.c
@@ -159,7 +159,7 @@ static ssize_t store_hyst(struct device *dev,
 	if (retval < 0)
 		goto fail;
 
-	hyst = val - retval * 1000;
+	hyst = retval * 1000 - val;
 	hyst = DIV_ROUND_CLOSEST(hyst, 1000);
 	if (hyst < 0 || hyst > 255) {
 		retval = -ERANGE;