cfg80211: don't allow WoWLAN support without CONFIG_PM

When CONFIG_PM is disabled, no device can possibly
support WoWLAN since it can't go to sleep to start
with. Due to this, mac80211 had even rejected the
hardware registration. By making all the code and
data for WoWLAN depend on CONFIG_PM we can promote
this runtime error to a compile-time error.

Add #ifdef around all WoWLAN code to remove it in
systems that don't need it as they never suspend.

Cc: Kalle Valo <kvalo@qca.qualcomm.com>
Acked-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 3 insertions, 4 deletions

diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 0b040fb73673..aded0018f6f3 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -706,12 +706,11 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
              local->hw.offchannel_tx_hw_queue >= local->hw.queues))
                 return -EINVAL;
 
-        if ((hw->wiphy->wowlan.flags || hw->wiphy->wowlan.n_patterns)
 #ifdef CONFIG_PM
-            && (!local->ops->suspend || !local->ops->resume)
-#endif
-            )
+        if ((hw->wiphy->wowlan.flags || hw->wiphy->wowlan.n_patterns) &&
+            (!local->ops->suspend || !local->ops->resume))
                 return -EINVAL;
+#endif
 
         if ((hw->flags & IEEE80211_HW_SCAN_WHILE_IDLE) && !local->ops->hw_scan)
                 return -EINVAL;