ath9k: disable radio when all devices are marked idle

This uses the new configuration changes indicated up by
mac80211 when all interfaces are marked idle. We need to do
a little more work as we have our own set of virtual
wiphys within ath9k.

Only when all virtual wiphys are inactive do we allow an idle
state change for a wiphy to trigger disabling the radio.

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

1 files changed, 17 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath9k/virtual.c b/drivers/net/wireless/ath/ath9k/virtual.c
index 1ff429b027d..e1d419e02b4 100644
--- a/drivers/net/wireless/ath/ath9k/virtual.c
+++ b/drivers/net/wireless/ath/ath9k/virtual.c
@@ -660,3 +660,20 @@ void ath9k_wiphy_set_scheduler(struct ath_softc *sc, unsigned int msec_int)
                 queue_delayed_work(sc->hw->workqueue, &sc->wiphy_work,
                                    sc->wiphy_scheduler_int);
 }
+
+/* caller must hold wiphy_lock */
+bool ath9k_all_wiphys_idle(struct ath_softc *sc)
+{
+        unsigned int i;
+        if (sc->pri_wiphy->state != ATH_WIPHY_INACTIVE) {
+                return false;
+        }
+        for (i = 0; i < sc->num_sec_wiphy; i++) {
+                struct ath_wiphy *aphy = sc->sec_wiphy[i];
+                if (!aphy)
+                        continue;
+                if (aphy->state != ATH_WIPHY_INACTIVE)
+                        return false;
+        }
+        return true;
+}