tree c138e807379524c55504d95b9fcc0144762f77a0
parent b81d8948746520f989e86d66292ff72b5056114a
author Jiaran Zhang <zhangjiaran@huawei.com> 1631538504 +0800
committer David S. Miller <davem@davemloft.net> 1631539537 +0100

net: hns3: fix the exception when query imp info

When the command for querying imp info is issued to the firmware,
if the firmware does not support the command, the returned value
of bd num is 0.
Add protection mechanism before alloc memory to prevent apply for
0-length memory.

Fixes: 0b198b0d80ea ("net: hns3: refactor dump m7 info of debugfs")
Signed-off-by: Jiaran Zhang <zhangjiaran@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>