From: Sujith <Sujith.Manoharan@atheros.com>
Date: Mon, 30 Mar 2009 09:58:42 +0000 (+0530)
Subject: ath9k: Check for root debugfs file
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=7dd58748592db1e5a77cfbddb8beffcfdb0242fe;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

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>
---

diff --git a/drivers/net/wireless/ath9k/debug.c b/drivers/net/wireless/ath9k/debug.c
index fdf9528fa49b..97df20cbf528 100644
--- 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)