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ethtool: fix ->reply_size() error handling

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The "ret < 0" comparison is never true because "ret" is still zero.

Fixes: 728480f124 ("ethtool: default handlers for GET requests")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dan Carpenter 2020-01-08 08:41:25 +03:00 committed by David S. Miller
parent a6dd04807c
commit d97772dbd7
1 changed files with 4 additions and 2 deletions
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6
net/ethtool/netlink.c
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@ -319,9 +319,10 @@ static int ethnl_default_doit(struct sk_buff *skb, struct genl_info *info)
rtnl_unlock();
if (ret < 0)
goto err_cleanup;
reply_len = ops->reply_size(req_info, reply_data);
ret = ops->reply_size(req_info, reply_data);
if (ret < 0)
goto err_cleanup;
reply_len = ret;
ret = -ENOMEM;
rskb = ethnl_reply_init(reply_len, req_info->dev, ops->reply_cmd,
ops->hdr_attr, info, &reply_payload);
@ -555,9 +556,10 @@ static void ethnl_default_notify(struct net_device *dev, unsigned int cmd,
ret = ops->prepare_data(req_info, reply_data, NULL);
if (ret < 0)
goto err_cleanup;
reply_len = ops->reply_size(req_info, reply_data);
ret = ops->reply_size(req_info, reply_data);
if (ret < 0)
goto err_cleanup;
reply_len = ret;
ret = -ENOMEM;
skb = genlmsg_new(reply_len, GFP_KERNEL);
if (!skb)