From 87cc360b88b7541d79963b32d2a302f184d10756 Mon Sep 17 00:00:00 2001
From: Gregory Elleouet <gregory.elleouet@gmail.com>
Date: Mon, 4 May 2015 22:37:12 +0200
Subject: [PATCH] Update gpio-admin.c

GPIO path in "allow_access_by_user" function doesn't correspond to new path "/sys/class/gpio/".
With new kernel 3.18, it throw an error when export a pin.
---
 src/gpio-admin.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/gpio-admin.c b/src/gpio-admin.c
index 38569bb..a9c751c 100644
--- a/src/gpio-admin.c
+++ b/src/gpio-admin.c
@@ -27,7 +27,7 @@ static void usage_error(char **argv) {
 
 static void allow_access_by_user(unsigned int pin, const char *filename) {
   char path[PATH_MAX];
-  int size = snprintf(path, PATH_MAX, "/sys/devices/virtual/gpio/gpio%u/%s", pin, filename);
+  int size = snprintf(path, PATH_MAX, "%sgpio%u/%s", GPIO_CLASS_PATH, pin, filename);
   
   if (size >= PATH_MAX) {
     error(7, 0, "path of GPIO pin is too long!");