[AVR32] Define mmiowb()
Add empty definition of mmiowb() since some drivers need it. Uncached
writes are strongly ordered on AVR32. They may be delayed if the
dcache is busy doing a writeback, but AFAICT that's not what this
macro is supposed to deal with, at least on UP systems.
We might have to revisit this definition when a SMP-capable AVR32 CPU
comes along, depending on how the busses and cache coherency stuff
end up being implemented.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
diff --git a/include/asm-avr32/io.h b/include/asm-avr32/io.h
index e30d4b3..64bb92b 100644
--- a/include/asm-avr32/io.h
+++ b/include/asm-avr32/io.h
@@ -255,6 +255,8 @@
memset((void __force *)addr, val, count);
}
+#define mmiowb()
+
#define IO_SPACE_LIMIT 0xffffffff
extern void __iomem *__ioremap(unsigned long offset, size_t size,