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-rw-r--r--include/asm-generic/io.h13
1 files changed, 3 insertions, 10 deletions
diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
index 303871651f8a..b83e2802c969 100644
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h
@@ -1,12 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/* Generic I/O port emulation.
*
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
*/
#ifndef __ASM_GENERIC_IO_H
#define __ASM_GENERIC_IO_H
@@ -19,12 +15,9 @@
#include <asm-generic/iomap.h>
#endif
+#include <asm/mmiowb.h>
#include <asm-generic/pci_iomap.h>
-#ifndef mmiowb
-#define mmiowb() do {} while (0)
-#endif
-
#ifndef __io_br
#define __io_br() barrier()
#endif
@@ -49,7 +42,7 @@
/* serialize device access against a spin_unlock, usually handled there. */
#ifndef __io_aw
-#define __io_aw() barrier()
+#define __io_aw() mmiowb_set_pending()
#endif
#ifndef __io_pbw