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hwmon: Prevent some divide by zeros in FAN_TO_REG()
authorDan Carpenter <dan.carpenter@oracle.com>
Thu, 12 Dec 2013 07:05:33 +0000 (08:05 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 20 Dec 2013 15:45:07 +0000 (07:45 -0800)
commit223cc81c8c68c4c6b09cf8c024b1881084f29e5d
tree50a21c1326f7c5a0ccd50c88613c9295d5b32c2ctree | snapshot
parente77a822f213aaa903e1aa9e5a5e4003b141d915ccommit | diff
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/hwmon/lm78.c diff | blob | history
drivers/hwmon/sis5595.c diff | blob | history
drivers/hwmon/vt8231.c diff | blob | history
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