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can: j1939: j1939_tp_rxtimer(): fix errant alert in j1939_tp_rxtimer

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commit b504a884f6 upstream.

When the session state is J1939_SESSION_DONE, j1939_tp_rxtimer() will
give an alert "rx timeout, send abort", but do nothing actually. Move
the alert into session active judgment condition, it is more
reasonable.

One of the scenarios is that j1939_tp_rxtimer() execute followed by
j1939_xtp_rx_abort_one(). After j1939_xtp_rx_abort_one(), the session
state is J1939_SESSION_DONE, then j1939_tp_rxtimer() give an alert.

Fixes: 9d71dd0c70 ("can: add support of SAE J1939 protocol")
Link: https://lore.kernel.org/all/20210906094219.95924-1-william.xuanziyang@huawei.com
Cc: stable@vger.kernel.org
Signed-off-by: Ziyang Xuan <william.xuanziyang@huawei.com>
Acked-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ziyang Xuan
2021-09-06 17:42:19 +08:00
committed by Greg Kroah-Hartman
parent 053bc12df0
commit ecfccb1c58
1 changed files with 2 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
net/can/j1939/transport.c
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@@ -1230,12 +1230,11 @@ static enum hrtimer_restart j1939_tp_rxtimer(struct hrtimer *hrtimer)
session->err = -ETIME;
j1939_session_deactivate(session);
} else {
netdev_alert(priv->ndev, "%s: 0x%p: rx timeout, send abort\n",
__func__, session);
j1939_session_list_lock(session->priv);
if (session->state >= J1939_SESSION_ACTIVE &&
session->state < J1939_SESSION_ACTIVE_MAX) {
netdev_alert(priv->ndev, "%s: 0x%p: rx timeout, send abort\n",
__func__, session);
j1939_session_get(session);
hrtimer_start(&session->rxtimer,
ms_to_ktime(J1939_XTP_ABORT_TIMEOUT_MS),