From 793cf87de9d1a62dc9079c3ec5fcc01cfc62fafb Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Mon, 14 Mar 2016 01:05:38 +0000 Subject: [PATCH] ethtool: Set cmd field in ETHTOOL_GLINKSETTINGS response to wrong nwords When the ETHTOOL_GLINKSETTINGS implementation finds that userland is using the wrong number of words of link mode bitmaps (or is trying to find out the right numbers) it sets the cmd field to 0 in the response structure. This is inconsistent with the implementation of every other ethtool command, so let's remove that inconsistency before it gets into a stable release. Fixes: 3f1ac7a700d03 ("net: ethtool: add new ETHTOOL_xLINKSETTINGS API") Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller --- net/core/ethtool.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/core/ethtool.c b/net/core/ethtool.c index 2966cd0d7c93..f426c5ad6149 100644 --- a/net/core/ethtool.c +++ b/net/core/ethtool.c @@ -655,7 +655,7 @@ static int ethtool_get_link_ksettings(struct net_device *dev, != link_ksettings.base.link_mode_masks_nwords) { /* wrong link mode nbits requested */ memset(&link_ksettings, 0, sizeof(link_ksettings)); - /* keep cmd field reset to 0 */ + link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; /* send back number of words required as negative val */ compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, "need too many bits for link modes!");