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-rw-r--r--net/mac80211/main.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 468829143991..0054bba08ce1 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -491,6 +491,10 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
+ WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)
+ && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK),
+ "U-APSD not supported with HW_PS_NULLFUNC_STACK\n");
+
/*
* Calculate scan IE length -- we need this to alloc
* memory and to subtract from the driver limit. It