From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Thu, 12 Dec 2013 07:05:33 +0000 (+0100)
Subject: hwmon: Prevent some divide by zeros in FAN_TO_REG()
X-Git-Tag: v3.2.54~46
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cf3f5a3dbf78b72541dc9f295101cb90a5465d5c;p=pandora-kernel.git

hwmon: Prevent some divide by zeros in FAN_TO_REG()

commit 3806b45ba4655147a011df03242cc197ab986c43 upstream.

The "rpm * div" operations can overflow here, so this patch adds an
upper limit to rpm to prevent that.  Jean Delvare helped me with this
patch.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Roger Lucas <vt8231@hiddenengine.co.uk>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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