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tty: ipwireless: Fix potential NULL pointer dereference

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[ Upstream commit 7dd50e205b3348dc7784efbdf85723551de64a25 ]

There is a potential NULL pointer dereference in case
alloc_ctrl_packet() fails and returns NULL.

Fixes: 099dc4fb6265 ("ipwireless: driver for PC Card 3G/UMTS modem")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
YueHaibing 2019-01-30 18:30:51 +08:00 committed by prashantpaddune
parent 9386021e47
commit 835b0d33bd
1 changed files with 2 additions and 0 deletions
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2
drivers/tty/ipwireless/hardware.c
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@ -1515,6 +1515,8 @@ static void ipw_send_setup_packet(struct ipw_hardware *hw)
sizeof(struct ipw_setup_get_version_query_packet),
ADDR_SETUP_PROT, TL_PROTOCOLID_SETUP,
TL_SETUP_SIGNO_GET_VERSION_QRY);
if (!ver_packet)
return;
ver_packet->header.length = sizeof(struct tl_setup_get_version_qry);
/*