[PATCH] carl9170: fix hung workqueue

[Christian Lamparter <chunkeey@googlemail.com>]

The patch "mac80211: wait for scan work complete before
restarting hw", broke carl9170's restart path.

Previously it was possible to call ieee80211_restart_hw
from mac80211's internal workqueue. Now though it hangs
because of the flush_workqueue in the procedure.

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
---
diff --git a/drivers/net/wireless/ath/carl9170/main.c b/drivers/net/wireless/ath/carl9170/main.c
index 84bd38e..d9d3e9c 100644
--- a/drivers/net/wireless/ath/carl9170/main.c
+++ b/drivers/net/wireless/ath/carl9170/main.c
@@ -515,7 +515,7 @@ void carl9170_restart(struct ar9170 *ar, const enum carl9170_restart_reasons r)
 		return;
 
 	if (IS_ACCEPTING_CMD(ar) && !ar->needs_full_reset)
-		ieee80211_queue_work(ar->hw, &ar->restart_work);
+		schedule_work(&ar->restart_work);
 	else
 		carl9170_usb_reset(ar);