net: dsa: felix: fix possible NULL pointer dereference
authorZheng Yongjun <zhengyongjun3@huawei.com>
Tue, 29 Mar 2022 09:08:00 +0000 (09:08 +0000)
committerJakub Kicinski <kuba@kernel.org>
Wed, 30 Mar 2022 19:07:38 +0000 (12:07 -0700)
commit866b7a278cdb51eb158cd8513bc7438fc857804a
tree72908ac61131087d8ca82603ab1a4de659863ea9
parent77c9387c0c5bd496fba3200024e3618356b2fd34
net: dsa: felix: fix possible NULL pointer dereference

As the possible failure of the allocation, kzalloc() may return NULL
pointer.
Therefore, it should be better to check the 'sgi' in order to prevent
the dereference of NULL pointer.

Fixes: 23ae3a7877718 ("net: dsa: felix: add stream gate settings for psfp").
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/20220329090800.130106-1-zhengyongjun3@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
drivers/net/dsa/ocelot/felix_vsc9959.c