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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>
This commit is contained in:
Christian Lamparter 2010-12-26 18:22:16 +01:00 committed by John W. Linville
parent c9e57f0fdc
commit 3b386510f4
1 changed files with 0 additions and 8 deletions
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8
drivers/net/wireless/ath/carl9170/phy.c
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@ -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;
}