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authorJouni Malinen <jouni.malinen@atheros.com>2009-05-19 17:01:40 +0300
committerJohn W. Linville <linville@tuxdriver.com>2009-05-20 14:46:33 -0400
commit54ce846e2c5ade77bc6650d8e8c7e775e01ad859 (patch)
treea328ee0be7e0df7fabfb5e82a0cd967919192a58
parent1ffc1c61bdbe31105d99d65043bbf7ae6d24dbc7 (diff)
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>
-rw-r--r--drivers/net/wireless/ath/ath9k/main.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index dd54fa727a6..d2ef9732c1d 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -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);