ath9k: remove unnecessary power save flags.

drv_config callback is called only after the ack for the nullframe
is received and so driver need not do anything special for this.

So remove NULLFUNC_COMPLETED, PS_ENABLED flags and bf_isnullfunc
flags from ath9k as mac80211 already handles them properly.

Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 0 insertions, 30 deletions

diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index f7da6b20a925..aa447770eb2b 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -1648,13 +1648,6 @@ static int ath_tx_setup_buffer(struct ieee80211_hw *hw, struct ath_buf *bf,
 
         bf->bf_buf_addr = bf->bf_dmacontext;
 
-        /* tag if this is a nullfunc frame to enable PS when AP acks it */
-        if (ieee80211_is_nullfunc(fc) && ieee80211_has_pm(fc)) {
-                bf->bf_isnullfunc = true;
-                sc->ps_flags &= ~PS_NULLFUNC_COMPLETED;
-        } else
-                bf->bf_isnullfunc = false;
-
         bf->bf_tx_aborted = false;
 
         return 0;
@@ -2082,18 +2075,6 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
                 }
 
                 /*
-                 * We now know the nullfunc frame has been ACKed so we
-                 * can disable RX.
-                 */
-                if (bf->bf_isnullfunc &&
-                    (ts.ts_status & ATH9K_TX_ACKED)) {
-                        if ((sc->ps_flags & PS_ENABLED))
-                                ath9k_enable_ps(sc);
-                        else
-                                sc->ps_flags |= PS_NULLFUNC_COMPLETED;
-                }
-
-                /*
                  * Remove ath_buf's of the same transmit unit from txq,
                  * however leave the last descriptor back as the holding
                  * descriptor for hw.
@@ -2236,17 +2217,6 @@ void ath_tx_edma_tasklet(struct ath_softc *sc)
 
                 txok = !(txs.ts_status & ATH9K_TXERR_MASK);
 
-                /*
-                 * Make sure null func frame is acked before configuring
-                 * hw into ps mode.
-                 */
-                if (bf->bf_isnullfunc && txok) {
-                        if ((sc->ps_flags & PS_ENABLED))
-                                ath9k_enable_ps(sc);
-                        else
-                                sc->ps_flags |= PS_NULLFUNC_COMPLETED;
-                }
-
                 if (!bf_isampdu(bf)) {
                         if (txs.ts_status & ATH9K_TXERR_XRETRY)
                                 bf->bf_state.bf_type |= BUF_XRETRY;