Re: [PATCH 1/2] net/wireless/nl80211.c: Avoid call to genlmsg_cancel

On Fri, 28 Jan 2011, Johannes Berg wrote:

On Fri, 2011-01-28 at 15:17 +0100, Julia Lawall wrote:

quoted

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 9b62710..864ddfb 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c

@@ -2718,7 +2718,7 @@ static int nl80211_get_mesh_config(struct sk_buff *skb,
 	hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
 			     NL80211_CMD_GET_MESH_CONFIG);
 	if (!hdr)
-		goto nla_put_failure;
+		goto out;

quoted

@@ -2954,7 +2955,7 @@ static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
 	hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
 			     NL80211_CMD_GET_REG);
 	if (!hdr)
-		goto nla_put_failure;
+		goto put_failure;
 
 	NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
 		cfg80211_regdomain->alpha2);

Seems fine. Actually, since the message is freed anyhow, the call to
genlmsg_cancel is *completely* unnecessary, I just put it in to make it
nest better and not rely on it not having side effects.

But why did you call the label differently? :)

Because out is already used in this case, and I didn't want to change all 
of the other occurrences of nla_put_failure.  It's a bit sloppy though, 
because this code is the actual nla_put_failure.  I can change it if you 
prefer.

julia