On Sun, Aug 09, 2020 at 11:24:38PM +0200, Michal Kubecek wrote:

As a result of previous commits, ethtool source now builds with gcc
versions 7-11 without any compiler warning with "-Wall -Wextra". Add
"-Wextra" to default cflags to make sure that any new warnings are
caught as early as possible.

Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michal Kubecek <redacted>

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

    Andrew