| From | Sasha Levin <> | Subject | [PATCH AUTOSEL 4.14 57/87] drivers/tty: add error handling for pcmcia_loop_config | Date | Mon, 17 Sep 2018 03:03:00 +0000 |
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From: Zhouyang Jia <jiazhouyang09@gmail.com>
[ Upstream commit 85c634e919bd6ef17427f26a52920aeba12e16ee ]
When pcmcia_loop_config fails, the lack of error-handling code may cause unexpected results.
This patch adds error-handling code after calling pcmcia_loop_config.
Signed-off-by: Zhouyang Jia <jiazhouyang09@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> --- drivers/tty/serial/8250/serial_cs.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/serial/8250/serial_cs.c b/drivers/tty/serial/8250/serial_cs.c index 933c2688dd7e..8106353ce7aa 100644 --- a/drivers/tty/serial/8250/serial_cs.c +++ b/drivers/tty/serial/8250/serial_cs.c @@ -637,8 +637,10 @@ static int serial_config(struct pcmcia_device *link) (link->has_func_id) && (link->socket->pcmcia_pfc == 0) && ((link->func_id == CISTPL_FUNCID_MULTI) || - (link->func_id == CISTPL_FUNCID_SERIAL))) - pcmcia_loop_config(link, serial_check_for_multi, info); + (link->func_id == CISTPL_FUNCID_SERIAL))) { + if (pcmcia_loop_config(link, serial_check_for_multi, info)) + goto failed; + } /* * Apply any multi-port quirk. -- 2.17.1
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