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net: can: j1939: recover socket queue on CAN bus error during BAM transmission

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Addresses an issue where a CAN bus error during a BAM transmission
could stall the socket queue, preventing further transmissions even
after the bus error is resolved. The fix activates the next queued
session after the error recovery, allowing communication to continue.

Fixes: 9d71dd0c70 ("can: add support of SAE J1939 protocol")
Cc: stable@vger.kernel.org
Reported-by: Alexander Hölzl <alexander.hoelzl@gmx.net>
Tested-by: Alexander Hölzl <alexander.hoelzl@gmx.net>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/all/20240528070648.1947203-1-o.rempel@pengutronix.de
Cc: stable@vger.kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Oleksij Rempel 2024-05-28 09:06:48 +02:00 committed by Marc Kleine-Budde
parent b7cdf1dd5d
commit 9ad1da14ab
1 changed files with 2 additions and 0 deletions
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2
net/can/j1939/transport.c
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@ -1696,6 +1696,8 @@ static int j1939_xtp_rx_rts_session_active(struct j1939_session *session,
j1939_session_timers_cancel(session); j1939_session_timers_cancel(session);
j1939_session_cancel(session, J1939_XTP_ABORT_BUSY); j1939_session_cancel(session, J1939_XTP_ABORT_BUSY);
if (session->transmission)
j1939_session_deactivate_activate_next(session);
return -EBUSY; return -EBUSY;
} }