From: Stanislaw Gruszka Date: Thu, 25 Oct 2012 07:51:39 +0000 (+0200) Subject: rt2800: validate step value for temperature compensation X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=bf7e1abe434ba9e22e8dc04a4cba4ab504b788b8;p=openwrt%2Fstaging%2Fblogic.git rt2800: validate step value for temperature compensation 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 Cc: stable@vger.kernel.org Signed-off-by: Stanislaw Gruszka Acked-by: Ivo van Doorn Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c index 01dc8891070c..59474ae0aec0 100644 --- a/drivers/net/wireless/rt2x00/rt2800lib.c +++ b/drivers/net/wireless/rt2x00/rt2800lib.c @@ -2449,7 +2449,7 @@ static int rt2800_get_gain_calibration_delta(struct rt2x00_dev *rt2x00dev) /* * Check if temperature compensation is supported. */ - if (tssi_bounds[4] == 0xff) + if (tssi_bounds[4] == 0xff || step == 0xff) return 0; /*