From 7c5897933f4f64594602b2e38264af705c061754 Mon Sep 17 00:00:00 2001
From: "Suren A. Chilingaryan" <csa@suren.me>
Date: Wed, 5 Aug 2015 18:11:59 +0200
Subject: Use global locks to protect kmem allocation to prevent race while
 allocating simmultaneously locking kmem pages and any other type of kmem

---
 pcilib/lock.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'pcilib/lock.c')

diff --git a/pcilib/lock.c b/pcilib/lock.c
index f1cbc56..13e363a 100644
--- a/pcilib/lock.c
+++ b/pcilib/lock.c
@@ -140,7 +140,10 @@ const char *pcilib_lock_get_name(pcilib_lock_t *lock) {
 int pcilib_lock_custom(pcilib_lock_t *lock, pcilib_lock_flags_t flags, pcilib_timeout_t timeout) {
     int err;
 
-    if (!lock) return 0;
+    if (!lock) {
+	pcilib_error("The null lock pointer is passed to lock function");
+	return PCILIB_ERROR_INVALID_ARGUMENT;
+    }
 
     struct timespec tm;
 
-- 
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