ethtool: check the return value of get_regs_len
authorYunsheng Lin <linyunsheng@huawei.com>
Wed, 26 Dec 2018 11:51:46 +0000 (19:51 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 11 Jun 2019 10:22:49 +0000 (12:22 +0200)
commitb9d3bd8e2897838af22c96d6c5f5bfc8261f5cd8
tree5221cb7865931ce4e0cbfef4825aa3b356f74d95
parent8474fc0335aeba513243f921988608e5d3108357
ethtool: check the return value of get_regs_len

commit f9fc54d313fab2834f44f516459cdc8ac91d797f upstream.

The return type for get_regs_len in struct ethtool_ops is int,
the hns3 driver may return error when failing to get the regs
len by sending cmd to firmware.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/core/ethtool.c