disp: msm: dp: fix warnings due to dp_hdcp2p2 thread reparking

This change checks "dp_hdcp2p2" thread's parked state, before
attempting to park the thread. This would avoid a warning
message from the kernel module, in case if the thread is already
parked.

Change-Id: I3133da7159c9806981e4760be275c0a54036958b
Signed-off-by: Sandeep Gangadharaiah <sandgang@codeaurora.org>

msm/dp/dp_hdcp2p2.c

@@ -316,7 +316,8 @@ static int dp_hdcp2p2_authenticate(void *input)
 	ctrl->sink_status = SINK_CONNECTED;
 	atomic_set(&ctrl->auth_state, HDCP_STATE_AUTHENTICATING);
 
-	kthread_park(ctrl->thread);
+	if (kthread_should_park())
+		kthread_park(ctrl->thread);
 	kfifo_reset(&ctrl->cmd_q);
 	kthread_unpark(ctrl->thread);