[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/os/linux/linux-3.4.x/include/asm-generic/mutex-null.h b/ap/os/linux/linux-3.4.x/include/asm-generic/mutex-null.h
new file mode 100644
index 0000000..e1bbbc7
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/include/asm-generic/mutex-null.h
@@ -0,0 +1,19 @@
+/*
+ * include/asm-generic/mutex-null.h
+ *
+ * Generic implementation of the mutex fastpath, based on NOP :-)
+ *
+ * This is used by the mutex-debugging infrastructure, but it can also
+ * be used by architectures that (for whatever reason) want to use the
+ * spinlock based slowpath.
+ */
+#ifndef _ASM_GENERIC_MUTEX_NULL_H
+#define _ASM_GENERIC_MUTEX_NULL_H
+
+#define __mutex_fastpath_lock(count, fail_fn) fail_fn(count)
+#define __mutex_fastpath_lock_retval(count, fail_fn) fail_fn(count)
+#define __mutex_fastpath_unlock(count, fail_fn) fail_fn(count)
+#define __mutex_fastpath_trylock(count, fail_fn) fail_fn(count)
+#define __mutex_slowpath_needs_to_unlock() 1
+
+#endif