ath9k: remove incompatible IBSS interface check in change_iface

'cfg80211: fix interface combinations' ensures that if an interface
type is not advertised by the driver in any of the interface combinations
(via ieee80211_iface_combination) then it shall be treated as a single
incompatible interface. if there are more than one interfaces present
and changing them to incompatible interface type is not possible.
These checks will be properly handled by cfg80211_change_iface ->
cfg80211_can_change_interface.

this patch is dependent on 'cfg80211: fix interface combinations'

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 0 insertions, 9 deletions

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 08506f190f27..ac41f1e3ab9f 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1467,15 +1467,6 @@ static int ath9k_change_interface(struct ieee80211_hw *hw,
         mutex_lock(&sc->mutex);
         ath9k_ps_wakeup(sc);
 
-        /* See if new interface type is valid. */
-        if ((new_type == NL80211_IFTYPE_ADHOC) &&
-            (sc->nvifs > 1)) {
-                ath_err(common, "When using ADHOC, it must be the only"
-                        " interface.\n");
-                ret = -EINVAL;
-                goto out;
-        }
-
         if (ath9k_uses_beacons(new_type) &&
             !ath9k_uses_beacons(vif->type)) {
                 if (sc->nbcnvifs >= ATH_BCBUF) {