From: Andrzej Hajda <a.hajda@samsung.com>
Date: Mon, 17 Oct 2016 12:21:37 +0000 (+0200)
Subject: drm/bridge/sii8620: add message queue cleanup
X-Git-Tag: submit/tizen/20161031.063553~11
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=46775d92b28219c636155ee434090249b47d07ff;p=platform%2Fkernel%2Flinux-exynos.git

drm/bridge/sii8620: add message queue cleanup

Queue should be cleaned up on disconnect, otherwise we risk misbehavior.

Change-Id: I4f212e1c36ac75f6f72102b24a1c5b14a932aeca
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 dcc08c02191d..56d310de6959 100644
--- a/drivers/gpu/drm/bridge/sii8620.c
+++ b/drivers/gpu/drm/bridge/sii8620.c
@@ -229,6 +229,17 @@ static void sii8620_setbits(struct sii8620 *ctx, u16 addr, u8 mask, u8 val)
 	sii8620_write(ctx, addr, val);
 }
 
+static void sii8620_mt_cleanup(struct sii8620 *ctx)
+{
+	struct sii8620_mt_msg *msg, *n;
+
+	list_for_each_entry_safe(msg, n, &ctx->mt_queue, node) {
+		list_del(&msg->node);
+		kfree(msg);
+	}
+	ctx->mt_state = MT_STATE_READY;
+}
+
 static void sii8620_mt_work(struct sii8620 *ctx)
 {
 	struct sii8620_mt_msg *msg;
@@ -1085,6 +1096,7 @@ static void sii8620_disconnect(struct sii8620 *ctx)
 	ctx->sink_type = SINK_NONE;
 	kfree(ctx->edid);
 	ctx->edid = NULL;
+	sii8620_mt_cleanup(ctx);
 }
 
 static void sii8620_mhl_disconnected(struct sii8620 *ctx)