[PATCH wireless-next 14/28] wifi: mac80211: Add dmesg log regarding warn-on in drv-stop.

[greearb@candelatech.com]

From: Ben Greear <greearb@candelatech.com>

And make it WARN_ON_ONCE.

Signed-off-by: Ben Greear <greearb@candelatech.com>
---
 net/mac80211/driver-ops.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/mac80211/driver-ops.c b/net/mac80211/driver-ops.c
index 59998d0af3ff..397a0281412a 100644
--- a/net/mac80211/driver-ops.c
+++ b/net/mac80211/driver-ops.c
@@ -38,8 +38,10 @@ void drv_stop(struct ieee80211_local *local, bool suspend)
 	might_sleep();
 	lockdep_assert_wiphy(local->hw.wiphy);
 
-	if (WARN_ON(!local->started))
+	if (WARN_ON_ONCE(!local->started)) {
+		pr_err("mac80211: drv-stop called but local is not started.\n");
 		return;
+	}
 
 	trace_drv_stop(local, suspend);
 	local->ops->stop(&local->hw, suspend);
-- 
2.42.0