xenbaked.c: Fix return handling for case of mmap failure

mmap() returns MAP_FAILED not NULL.

Signed-off-by: Don Slutz <dslutz@verizon.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>

diff --git a/tools/xenmon/xenbaked.c b/tools/xenmon/xenbaked.c
index 985f1dd12354cb1fb96278010413573ee17b58c9..dc61d14f8edb66c3b8186b4d4daf2d1f2eb25d0e 100644 (file)
--- a/tools/xenmon/xenbaked.c
+++ b/tools/xenmon/xenbaked.c
@@ -674,7 +674,7 @@ static void alloc_qos_data(int ncpu)
         new_qos = (_new_qos_data *) mmap(0, sizeof(_new_qos_data), PROT_READ|PROT_WRITE, 
                                          MAP_SHARED, qos_fd, off);
         off += i;
-        if (new_qos == NULL) {
+        if (new_qos == MAP_FAILED) {
             PERROR("mmap");
             exit(3);
         }