mac80211: fix propagation of failed hardware reconfigurations

[safe/jmp/linux-2.6] / net / mac80211 / util.c

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 78a6e92..dc76267 100644 (file)
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1039,7 +1039,19 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 
        /* restart hardware */
        if (local->open_count) {
+               /*
+                * Upon resume hardware can sometimes be goofy due to
+                * various platform / driver / bus issues, so restarting
+                * the device may at times not work immediately. Propagate
+                * the error.
+                */
                res = drv_start(local);
+               if (res) {
+                       WARN(local->suspended, "Harware became unavailable "
+                            "upon resume. This is could be a software issue"
+                            "prior to suspend or a harware issue\n");
+                       return res;
+               }
 
                ieee80211_led_radio(local, true);
        }