From: Changyeon Lee <cyeon.lee@samsung.com>
Date: Mon, 24 Oct 2016 04:21:25 +0000 (+0900)
Subject: don't call reset callback when queue doesn't have attached buffer in flush
X-Git-Tag: accepted/tizen/3.0/ivi/20161104.103618~5
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=refs%2Fchanges%2F90%2F93490%2F1;p=platform%2Fcore%2Fuifw%2Flibtbm.git

don't call reset callback when queue doesn't have attached buffer in flush

Change-Id: I2bccf23fc7b9569ea2e7aee26e06d0e73b0bd993
---

diff --git a/src/tbm_surface_queue.c b/src/tbm_surface_queue.c
index 4279280..2b65e02 100644
--- a/src/tbm_surface_queue.c
+++ b/src/tbm_surface_queue.c
@@ -1392,10 +1392,15 @@ tbm_surface_queue_flush(tbm_surface_queue_h surface_queue)
 	TBM_SURF_QUEUE_RETURN_VAL_IF_FAIL(_tbm_surface_queue_is_valid(surface_queue),
 			       TBM_SURFACE_QUEUE_ERROR_INVALID_QUEUE);
 
-	pthread_mutex_lock(&surface_queue->lock);
-
 	TBM_QUEUE_TRACE("tbm_surface_queue(%p)\n", surface_queue);
 
+	if (surface_queue->num_attached == 0) {
+		_tbm_surf_queue_mutex_unlock();
+		return TBM_SURFACE_QUEUE_ERROR_NONE;
+	}
+
+	pthread_mutex_lock(&surface_queue->lock);
+
 	/* Destory surface and Push to free_queue */
 	LIST_FOR_EACH_ENTRY_SAFE(node, tmp, &surface_queue->list, link) {
 		_queue_delete_node(surface_queue, node);