mac80211: reassign channel contexts before stations

Since channel contexts are usually present before
stations can be added to an interface, reassign
before stations them in reconfiguration as well.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 01b9fa6..4e4f585 100644 (file)
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1422,6 +1422,23 @@ int ieee80211_reconfig(struct ieee80211_local *local)
                WARN_ON(drv_add_chanctx(local, ctx));
        mutex_unlock(&local->chanctx_mtx);
 
+       list_for_each_entry(sdata, &local->interfaces, list) {
+               struct ieee80211_chanctx_conf *ctx_conf;
+
+               if (!ieee80211_sdata_running(sdata))
+                       continue;
+
+               mutex_lock(&local->chanctx_mtx);
+               ctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
+                               lockdep_is_held(&local->chanctx_mtx));
+               if (ctx_conf) {
+                       ctx = container_of(ctx_conf, struct ieee80211_chanctx,
+                                          conf);
+                       drv_assign_vif_chanctx(local, sdata, ctx);
+               }
+               mutex_unlock(&local->chanctx_mtx);
+       }
+
        /* add STAs back */
        mutex_lock(&local->sta_mtx);
        list_for_each_entry(sta, &local->sta_list, list) {
@@ -1462,22 +1479,11 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 
        /* Finally also reconfigure all the BSS information */
        list_for_each_entry(sdata, &local->interfaces, list) {
-               struct ieee80211_chanctx_conf *ctx_conf;
                u32 changed;
 
                if (!ieee80211_sdata_running(sdata))
                        continue;
 
-               mutex_lock(&local->chanctx_mtx);
-               ctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
-                               lockdep_is_held(&local->chanctx_mtx));
-               if (ctx_conf) {
-                       ctx = container_of(ctx_conf, struct ieee80211_chanctx,
-                                          conf);
-                       drv_assign_vif_chanctx(local, sdata, ctx);
-               }
-               mutex_unlock(&local->chanctx_mtx);
-
                /* common change flags for all interface types */
                changed = BSS_CHANGED_ERP_CTS_PROT |
                          BSS_CHANGED_ERP_PREAMBLE |