[PATCH] net: mac80211: use IS_ERR to check return value

[yingsha xu]

According to the annotation of function debugfs_create_fs, if
an error occurs, ERR_PTR(-ERROR) will be returned instead of
a null pointer or zero value.

Fix it by using IS_ERR().

Fixes: e9f207f0ff90 ("[MAC80211]: Add debugfs attributes.")
Signed-off-by: yingsha xu <ysxu@xxxxxxxxxxx>
Reviewed-by: Dongliang Mu <dzm91@xxxxxxxxxxx>
---
 net/mac80211/debugfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c
index dfb9f55e2685..672bf969ad88 100644
--- a/net/mac80211/debugfs.c
+++ b/net/mac80211/debugfs.c
@@ -674,7 +674,7 @@ void debugfs_hw_add(struct ieee80211_local *local)
 	statsd = debugfs_create_dir("statistics", phyd);
 
 	/* if the dir failed, don't put all the other things into the root! */
-	if (!statsd)
+	if (IS_ERR(statsd))
 		return;
 
 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
-- 
2.17.1