ath9k: Enable dynamic power save in ath9k.

This patch implements dynamic power save feature for ath9k.

Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath9k/recv.c b/drivers/net/wireless/ath9k/recv.c
index 648bb49e6734..8da08f9b463c 100644
--- a/drivers/net/wireless/ath9k/recv.c
+++ b/drivers/net/wireless/ath9k/recv.c
@@ -628,6 +628,12 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush)
                 } else {
                         sc->rx.rxotherant = 0;
                 }
+
+                if (ieee80211_is_beacon(hdr->frame_control) &&
+                                (sc->sc_flags & SC_OP_WAIT_FOR_BEACON)) {
+                        sc->sc_flags &= ~SC_OP_WAIT_FOR_BEACON;
+                        ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_NETWORK_SLEEP);
+                }
 requeue:
                 list_move_tail(&bf->list, &sc->rx.rxbuf);
                 ath_rx_buf_link(sc, bf);