hwmon: (max6639) Fix FAN_FROM_REG calculation
authorChris D Schimp <silverchris@gmail.com>
Mon, 20 Feb 2012 21:59:24 +0000 (16:59 -0500)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 1 Mar 2012 00:31:12 +0000 (16:31 -0800)
commit8003623db5dfe0819e0fb83863392d6465569d60
tree987fefc28e73202404f673eee12166c8608f6ba8
parent8f6c3d1a5873d9190bd6259357900ddebc308626
hwmon: (max6639) Fix FAN_FROM_REG calculation

commit b63d97a36edb1aecf8c13e5f5783feff4d64c24b upstream.

RPM calculation from tachometer value does not depend on PPR.
Also, do not report negative RPM values.

Signed-off-by: Chris D Schimp <silverchris@gmail.com>
[guenter.roeck@ericsson.com: do not report negative RPM values]
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/hwmon/max6639.c