Commit 54ce846e authored May 19, 2009 by Jouni Malinen Committed by John W. Linville May 20, 2009

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

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>

parent 1ffc1c61

drivers/net/wireless/ath/ath9k/main.c

+10 −0

Original line number	Diff line number	Diff line
		@@ -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);