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ath9k: Use TSFOOR interrupt to trigger TSF sync with next Beacon

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If the chip complains about TSF sync, make sure we remain awake to
sync with the next Beacon frame. In theory, this should not be needed
since we are currently trying to receive all Beacon frames, anyway,
better have this code ready should we ever change that.

Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Jouni Malinen 2009-05-19 17:01:40 +03:00 committed by John W. Linville
parent 1ffc1c61bd
commit 54ce846e2c
1 changed files with 10 additions and 0 deletions
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10
drivers/net/wireless/ath/ath9k/main.c
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@ -480,6 +480,16 @@ static void ath9k_tasklet(unsigned long data)
if (status & ATH9K_INT_TX)
ath_tx_tasklet(sc);
if ((status & ATH9K_INT_TSFOOR) &&
(sc->hw->conf.flags & IEEE80211_CONF_PS)) {
/*
* TSF sync does not look correct; remain awake to sync with
* the next Beacon.
*/
DPRINTF(sc, ATH_DBG_PS, "TSFOOR - Sync with next Beacon\n");
sc->sc_flags |= SC_OP_WAIT_FOR_BEACON;
}
/* re-enable hardware interrupt */
ath9k_hw_set_interrupts(sc->sc_ah, sc->imask);
ath9k_ps_restore(sc);