linux-kernel - [PATCH 5.4 078/107] can: j1939: cancel rxtimer on multipacket broadcast session complete

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Message-Id: <20200824082408.981713342@linuxfoundation.org>
Date:   Mon, 24 Aug 2020 10:30:44 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Zhang Changzhong <zhangchangzhong@...wei.com>,
        Oleksij Rempel <o.rempel@...gutronix.de>,
        Marc Kleine-Budde <mkl@...gutronix.de>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 078/107] can: j1939: cancel rxtimer on multipacket broadcast session complete

From: Zhang Changzhong <zhangchangzhong@...wei.com>

[ Upstream commit e8b17653088f28a87c81845fa41a2d295a3b458c ]

If j1939_xtp_rx_dat_one() receive last frame of multipacket broadcast message,
j1939_session_timers_cancel() should be called to cancel rxtimer.

Fixes: 9d71dd0c7009 ("can: add support of SAE J1939 protocol")
Signed-off-by: Zhang Changzhong <zhangchangzhong@...wei.com>
Link: https://lore.kernel.org/r/1596599425-5534-3-git-send-email-zhangchangzhong@huawei.com
Acked-by: Oleksij Rempel <o.rempel@...gutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 net/can/j1939/transport.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/can/j1939/transport.c b/net/can/j1939/transport.c
index 67189b4c482c5..d1a9adde677b0 100644
--- a/net/can/j1939/transport.c
+++ b/net/can/j1939/transport.c
@@ -1811,6 +1811,7 @@ static void j1939_xtp_rx_dat_one(struct j1939_session *session,
 	}
 
 	if (final) {
+		j1939_session_timers_cancel(session);
 		j1939_session_completed(session);
 	} else if (do_cts_eoma) {
 		j1939_tp_set_rxtimeout(session, 1250);
-- 
2.25.1