rt2800: validate step value for temperature compensation
authorStanislaw Gruszka <sgruszka@redhat.com>
Thu, 25 Oct 2012 07:51:39 +0000 (09:51 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 17 Nov 2012 21:18:28 +0000 (13:18 -0800)
commit9fc9d86a23e2b5eb411c33d3bb8a8ee9a06f34d0
tree2342657f605c308e85da8a9015e0b5a557ff3f7c
parentec3559970271fe2b28f731dd8bf32c3ef5c0bc02
rt2800: validate step value for temperature compensation

commit bf7e1abe434ba9e22e8dc04a4cba4ab504b788b8 upstream.

Some hardware has correct (!= 0xff) value of tssi_bounds[4] in the
EEPROM, but step is equal to 0xff. This results on ridiculous delta
calculations and completely broke TX power settings.

Reported-and-tested-by: Pavel Lucik <pavel.lucik@gmail.com>
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/net/wireless/rt2x00/rt2800lib.c