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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/avr32/include/asm/barrier.h
Initial import
Diffstat (limited to 'arch/avr32/include/asm/barrier.h')
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diff --git a/arch/avr32/include/asm/barrier.h b/arch/avr32/include/asm/barrier.h
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+++ b/arch/avr32/include/asm/barrier.h
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+/*
+ * Copyright (C) 2004-2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __ASM_AVR32_BARRIER_H
+#define __ASM_AVR32_BARRIER_H
+
+/*
+ * Weirdest thing ever.. no full barrier, but it has a write barrier!
+ */
+#define wmb() asm volatile("sync 0" : : : "memory")
+
+#ifdef CONFIG_SMP
+# error "The AVR32 port does not support SMP"
+#endif
+
+#include <asm-generic/barrier.h>
+
+#endif /* __ASM_AVR32_BARRIER_H */