mac80211: further simplify ieee80211_bss_info_change_notify

The special case in the function isn't really needed,
instead make the suspend code a bit better and also
easier to understand and move the warning into the
driver op wrapper inline.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c
index 712c17f..8a67d7e 100644
--- a/net/mac80211/pm.c
+++ b/net/mac80211/pm.c
@@ -121,7 +121,7 @@
 
 	/* remove all interfaces */
 	list_for_each_entry(sdata, &local->interfaces, list) {
-		u32 changed = BSS_CHANGED_BEACON_ENABLED;
+		u32 changed = 0;
 
 		if (!ieee80211_sdata_running(sdata))
 			continue;
@@ -136,14 +136,19 @@
 				changed = BSS_CHANGED_ASSOC |
 					  BSS_CHANGED_BSSID |
 					  BSS_CHANGED_IDLE;
-			else
-				changed = 0;
-			/* fall through */
+			break;
+		case NL80211_IFTYPE_AP:
+		case NL80211_IFTYPE_ADHOC:
+		case NL80211_IFTYPE_MESH_POINT:
+			if (sdata->vif.bss_conf.enable_beacon)
+				changed = BSS_CHANGED_BEACON_ENABLED;
+			break;
 		default:
-			ieee80211_quiesce(sdata);
 			break;
 		}
 
+		ieee80211_quiesce(sdata);
+
 		sdata->suspend_bss_conf = sdata->vif.bss_conf;
 		memset(&sdata->vif.bss_conf, 0, sizeof(sdata->vif.bss_conf));
 		sdata->vif.bss_conf.idle = true;