Commit 3b386510 authored Dec 26, 2010 by Christian Lamparter Committed by John W. Linville Jan 04, 2011

carl9170: reduce channel change delay



By removing two "safety" msleeps (and an echo nop), the
channel change delay is effectively halved. Previously,
the delay could be as long as 260 ms and the device
could not go off-channel without risking to miss the
next DTIM beacon [interval ~307 ms].

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

parent c9e57f0f

drivers/net/wireless/ath/carl9170/phy.c

+0 −8

Original line number	Diff line number	Diff line
		@@ -1029,8 +1029,6 @@ static int carl9170_init_rf_bank4_pwr(struct ar9170 *ar, bool band5ghz,
		if (err)
		return err;

		msleep(20);

		return 0;
		}

		@@ -1660,12 +1658,6 @@ int carl9170_set_channel(struct ar9170 ar, struct ieee80211_channel channel,
		return err;

		cmd = CARL9170_CMD_RF_INIT;

		msleep(100);

		err = carl9170_echo_test(ar, 0xaabbccdd);
		if (err)
		return err;
		} else {
		cmd = CARL9170_CMD_FREQUENCY;
		}