From 3e836ce23e2cc90ad3f16de47393a31b96052099 Mon Sep 17 00:00:00 2001
From: "Serge A. Zaitsev" <zaitsev.serge@gmail.com>
Date: Sat, 27 Jun 2015 06:00:05 +0300
Subject: [PATCH] checking errors in fs walk

---
 usb_linux.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/usb_linux.go b/usb_linux.go
index 90d3e31..9deba79 100644
--- a/usb_linux.go
+++ b/usb_linux.go
@@ -266,8 +266,8 @@ func walker(path string, cb func(Device)) error {
 }
 
 func UsbWalk(cb func(Device)) {
-	filepath.Walk(DevBusUsb, func(f string, fi os.FileInfo, _ error) error {
-		if fi.IsDir() {
+	filepath.Walk(DevBusUsb, func(f string, fi os.FileInfo, err error) error {
+		if err != nil || fi.IsDir() {
 			return nil
 		}
 		if err := walker(f, cb); err != nil {