From: Axel Lin <axel.lin@ingics.com>
Date: Sat, 2 Aug 2014 05:36:38 +0000 (+0800)
Subject: hwmon: (gpio-fan) Prevent overflow problem when writing large limits
X-Git-Tag: v3.2.64~187
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4623d221e6e72556264ce8ae03246b923ef0daaf;p=pandora-kernel.git

hwmon: (gpio-fan) Prevent overflow problem when writing large limits

commit 2565fb05d1e9fc0831f7b1c083bcfcb1cba1f020 upstream.

On platforms with sizeof(int) < sizeof(unsigned long), writing a rpm value
larger than MAXINT will result in unpredictable limit values written to the
chip. Avoid auto-conversion from unsigned long to int to fix the problem.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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