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diff --git a/arch/avr32/lib/io-writesl.S b/arch/avr32/lib/io-writesl.S
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+++ b/arch/avr32/lib/io-writesl.S
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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.
+ */
+
+ .global __raw_writesl
+ .type __raw_writesl,@function
+__raw_writesl:
+ cp.w r10, 0
+ reteq r12
+
+1: ld.w r8, r11++
+ sub r10, 1
+ st.w r12[0], r8
+ brne 1b
+
+ retal r12
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