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-rw-r--r--include/asm-generic/rwonce.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-generic/rwonce.h b/include/asm-generic/rwonce.h
index 87584379da43..04586b55a7c2 100644
--- a/include/asm-generic/rwonce.h
+++ b/include/asm-generic/rwonce.h
@@ -43,7 +43,9 @@
* atomicity or dependency ordering guarantees. Note that this may result
* in tears!
*/
+#ifndef __READ_ONCE
#define __READ_ONCE(x) (*(const volatile __unqual_scalar_typeof(x) *)&(x))
+#endif
#define __READ_ONCE_SCALAR(x) \
({ \