Stage work outside of the stgd lock to prevent attempted recursive locking in clone_available.

cgminer.c

@@ -3000,7 +3000,7 @@ static void stage_work(struct work *work);
 
 static bool clone_available(void)
 {
-	struct work *work, *tmp;
+	struct work *work_clone = NULL, *work, *tmp;
 	bool cloned = false;
 
 	mutex_lock(stgd_lock);
@@ -3009,13 +3009,10 @@ static bool clone_available(void)
 
 	HASH_ITER(hh, staged_work, work, tmp) {
 		if (can_roll(work) && should_roll(work)) {
-			struct work *work_clone;
-
 			roll_work(work);
 			work_clone = make_clone(work);
 			roll_work(work);
 			applog(LOG_DEBUG, "Pushing cloned available work to stage thread");
-			stage_work(work_clone);
 			cloned = true;
 			break;
 		}
@@ -3024,6 +3021,8 @@ static bool clone_available(void)
 out_unlock:
 	mutex_unlock(stgd_lock);
 
+	if (cloned)
+		stage_work(work_clone);
 	return cloned;
 }