ath5k: enable Power-Save Polls by setting the association ID

mac80211 has long provided us the association ID. This isn't useful except
for Power-Save polling which now gets enabled. We can now poll for our
pending frames on the AP during power save.

You can review the details of Power-Save on the wireless wiki:

http://wireless.kernel.org/en/developers/Documentation/ieee80211/power-savings

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 9 insertions, 3 deletions

diff --git a/drivers/net/wireless/ath/ath5k/base.c b/drivers/net/wireless/ath/ath5k/base.c
index 01da83d75ef4..07c1e52b5a0c 100644
--- a/drivers/net/wireless/ath/ath5k/base.c
+++ b/drivers/net/wireless/ath/ath5k/base.c
@@ -3211,8 +3211,7 @@ static void ath5k_bss_info_changed(struct ieee80211_hw *hw,
         if (changes & BSS_CHANGED_BSSID) {
                 /* Cache for later use during resets */
                 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
-                /* XXX: assoc id is set to 0 for now, mac80211 doesn't have
-                 * a clean way of letting us retrieve this yet. */
+                common->curaid = 0;
                 ath5k_hw_set_associd(ah);
                 mmiowb();
         }
@@ -3226,6 +3225,14 @@ static void ath5k_bss_info_changed(struct ieee80211_hw *hw,
                         set_beacon_filter(hw, sc->assoc);
                 ath5k_hw_set_ledstate(sc->ah, sc->assoc ?
                         AR5K_LED_ASSOC : AR5K_LED_INIT);
+                if (bss_conf->assoc) {
+                        ATH5K_DBG(sc, ATH5K_DEBUG_ANY,
+                                  "Bss Info ASSOC %d, bssid: %pM\n",
+                                  bss_conf->aid, common->curbssid);
+                        common->curaid = bss_conf->aid;
+                        ath5k_hw_set_associd(ah);
+                        /* Once ANI is available you would start it here */
+                }
         }
 
         if (changes & BSS_CHANGED_BEACON) {
diff --git a/drivers/net/wireless/ath/ath5k/reset.c b/drivers/net/wireless/ath/ath5k/reset.c
index fb8981548794..3dab3d856d7b 100644
--- a/drivers/net/wireless/ath/ath5k/reset.c
+++ b/drivers/net/wireless/ath/ath5k/reset.c
@@ -1187,7 +1187,6 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum nl80211_iftype op_mode,
          */
 
         /* Restore bssid and bssid mask */
-        /* XXX: add ah->aid once mac80211 gives this to us */
         ath5k_hw_set_associd(ah);
 
         /* Set PCU config */