vendor/acpica/20150408

1 files changed, 9 insertions, 12 deletions

diff --git a/source/components/utilities/utclib.c b/source/components/utilities/utclib.c
index 8cc04f2cc1c3..e68634b18bbb 100644
--- a/source/components/utilities/utclib.c
+++ b/source/components/utilities/utclib.c
@@ -475,28 +475,25 @@ AcpiUtStrstr (
     char                    *String1,
     char                    *String2)
 {
-    char                    *String;
+    UINT32                  Length;
 
 
-    if (AcpiUtStrlen (String2) > AcpiUtStrlen (String1))
+    Length = AcpiUtStrlen (String2);
+    if (!Length)
     {
-        return (NULL);
+        return (String1);
     }
 
-    /* Walk entire string, comparing the letters */
-
-    for (String = String1; *String2; )
+    while (AcpiUtStrlen (String1) >= Length)
     {
-        if (*String2 != *String)
+        if (AcpiUtMemcmp (String1, String2, Length) == 0)
         {
-            return (NULL);
+            return (String1);
         }
-
-        String2++;
-        String++;
+        String1++;
     }
 
-    return (String1);
+    return (NULL);
 }