[PATCH ethtool] ioctl: do not pass transceiver value back to kernel

While we want to report transceiver value in "ethtool <dev>" output, we
must not return nonzero value provided in ETHTOOL_GLINKSETTINGS reply back
to kernel in ETHTOOL_SLINKSETTINGS request.

Fixes: 8bb9a04002a3 ("ethtool.c: Report transceiver correctly")
Reported-by: Ali MJ Al-Nasrawy <redacted>
Signed-off-by: Michal Kubecek <redacted>
---
 ethtool.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ethtool.c b/ethtool.c
index d37c223dcc04..1b99ac91dcbf 100644
--- a/ethtool.c
+++ b/ethtool.c

@@ -2906,6 +2906,8 @@ static int do_sset(struct cmd_context *ctx)
 		struct ethtool_link_usettings *link_usettings;
 
 		link_usettings = do_ioctl_glinksettings(ctx);
+		memset(&link_usettings->deprecated, 0,
+		       sizeof(link_usettings->deprecated));
 		if (link_usettings == NULL)
 			link_usettings = do_ioctl_gset(ctx);
 		if (link_usettings == NULL) {

-- 
2.27.0