can: j1939: j1939_local_ecu_get(): undo increment when j1939_local_ecu_get() fails
[ Upstream commit 06e02da29f6f1a45fc07bd60c7eaf172dc21e334 ] Since j1939_sk_bind() and j1939_sk_release() call j1939_local_ecu_put() when J1939_SOCK_BOUND was already set, but the error handling path for j1939_sk_bind() will not set J1939_SOCK_BOUND when j1939_local_ecu_get() fails, j1939_local_ecu_get() needs to undo priv->ents[sa].nusers++ when j1939_local_ecu_get() returns an error. Fixes: 9d71dd0c ("can: add support of SAE J1939 protocol") Signed-off-by:Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Tested-by:
Oleksij Rempel <o.rempel@pengutronix.de> Acked-by:
Oleksij Rempel <o.rempel@pengutronix.de> Link: https://patch.msgid.link/e7f80046-4ff7-4ce2-8ad8-7c3c678a42c9@I-love.SAKURA.ne.jp Signed-off-by:
Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by:
Sasha Levin <sashal@kernel.org>
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