ath9k: Check for root debugfs file

Creation of the root debugfs file could have failed for some reason, check properly before proceeding in this case. Signed-off-by: Sujith <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
git-mirror · Apr 22, 2009 · 7dd5874 · 7dd5874
1 parent 5cc9399
commit 7dd5874
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/drivers/net/wireless/ath9k/debug.c b/drivers/net/wireless/ath9k/debug.c
@@ -498,6 +498,9 @@ int ath9k_init_debug(struct ath_softc *sc)
 {
 	sc->debug.debug_mask = ath9k_debug;
 
+	if (!ath9k_debugfs_root)
+		return -ENOENT;
+
 	sc->debug.debugfs_phy = debugfs_create_dir(wiphy_name(sc->hw->wiphy),
 						      ath9k_debugfs_root);
 	if (!sc->debug.debugfs_phy)