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List:       linux-can
Subject:    [PATCH 11/11] sllin: Evaluate message upon break only if received at least a LIN ID
From:       Alexander Stein <alexander.stein () systec-electronic ! com>
Date:       2013-12-16 7:54:14
Message-ID: 1387180454-1738-12-git-send-email-alexander.stein () systec-electronic ! com
[Download RAW message or body]

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
---
 sllin/sllin.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

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);
-- 
1.8.3.2

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