From: Andrzej Hajda <a.hajda@samsung.com>
Date: Mon, 17 Oct 2016 12:37:47 +0000 (+0200)
Subject: drm/bridge/sii8620: fix message worker function
X-Git-Tag: submit/tizen/20161031.063553~10
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f318e3668f48a5e7c38330e4f5aa1e7f578cee70;p=platform%2Fkernel%2Flinux-exynos.git

drm/bridge/sii8620: fix message worker function

Messages should not be handled in error and busy state. Also state should
be update on success.

Change-Id: Ib6ac51f920cb44f75628cbec78b3bb32774816ff
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
---

diff --git a/drivers/gpu/drm/bridge/sii8620.c b/drivers/gpu/drm/bridge/sii8620.c
index 56d310de6959..384e592ba6e5 100644
--- a/drivers/gpu/drm/bridge/sii8620.c
+++ b/drivers/gpu/drm/bridge/sii8620.c
@@ -244,10 +244,13 @@ static void sii8620_mt_work(struct sii8620 *ctx)
 {
 	struct sii8620_mt_msg *msg;
 
-	if (list_empty(&ctx->mt_queue))
+	if (ctx->error)
+		return;
+	if (ctx->mt_state == MT_STATE_BUSY || list_empty(&ctx->mt_queue))
 		return;
 
 	if (ctx->mt_state == MT_STATE_DONE) {
+		ctx->mt_state = MT_STATE_READY;
 		msg = list_first_entry(&ctx->mt_queue, struct sii8620_mt_msg,
 				       node);
 		if (msg->recv)