From: Alexander Stein <alexander.stein@systec-electronic.com>
Date: Mon, 16 Dec 2013 07:54:14 +0000 (+0100)
Subject: sllin: Evaluate message upon break only if received at least a LIN ID
X-Git-Url: http://rtime.felk.cvut.cz/gitweb/linux-lin.git/commitdiff_plain/ad7ce90af771ff022bfd1d647ea8cdc35d0d503b?ds=sidebyside

sllin: Evaluate message upon break only if received at least a LIN ID

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
---

diff --git a/sllin/sllin.c b/sllin/sllin.c
index 61c8134..8d7ad69 100644
--- a/sllin/sllin.c
+++ b/sllin/sllin.c
@@ -716,10 +716,12 @@ static void sllin_slave_receive_buf(struct tty_struct *tty,
 		if (fp && *fp++) {
 			/*
 			 * If we don't know the length of the current message
-			 * we received the break of the next message.
-			 * Evaluate the previous one before continuing
+			 * and received at least the LIN ID, we received here
+			 * the break of the next message.
+			 * Evaluate the previous one before continuing.
 			 */
-			if (sl->rx_len_unknown == true)
+			if ((sl->rx_len_unknown == true) &&
+				(sl->rx_cnt >= SLLIN_BUFF_ID))
 			{
 				hrtimer_cancel(&sl->rx_timer);
 				sllin_slave_finish_rx_msg(sl);