tree 2163e312bce8d9f0288132da3c97ecf679fe6d24
parent 3c5189ad70995200bb5c15b5fc9bc81a35febcf4
author Michael Zhivich <mzhivich@akamai.com> 1554734925 -0400
committer David S. Miller <davem@davemloft.net> 1554766243 -0700

ethtool: avoid signed-unsigned comparison in ethtool_validate_speed()

When building C++ userspace code that includes ethtool.h
with "-Werror -Wall", g++ complains about signed-unsigned comparison in
ethtool_validate_speed() due to definition of SPEED_UNKNOWN as -1.

Explicitly cast SPEED_UNKNOWN to __u32 to match type of
ethtool_validate_speed() argument.

Signed-off-by: Michael Zhivich <mzhivich@akamai.com>
Signed-off-by: David S. Miller <davem@davemloft.net>