1 files changed, 10 insertions, 2 deletions

diff --git a/include/asm-mips/delay.h b/include/asm-mips/delay.h
index fab32131e9b4..de5105d05f1e 100644
--- a/include/asm-mips/delay.h
+++ b/include/asm-mips/delay.h
@@ -6,13 +6,16 @@
  * Copyright (C) 1994 by Waldorf Electronics
  * Copyright (C) 1995 - 2000, 01, 03 by Ralf Baechle
  * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
+ * Copyright (C) 2007  Maciej W. Rozycki
  */
 #ifndef _ASM_DELAY_H
 #define _ASM_DELAY_H
 
 #include <linux/param.h>
 #include <linux/smp.h>
+
 #include <asm/compiler.h>
+#include <asm/war.h>
 
 static inline void __delay(unsigned long loops)
 {
@@ -50,7 +53,7 @@ static inline void __delay(unsigned long loops)
 
 static inline void __udelay(unsigned long usecs, unsigned long lpj)
 {
-        unsigned long lo;
+        unsigned long hi, lo;
 
         /*
          * The rates of 128 is rounded wrongly by the catchall case
@@ -70,11 +73,16 @@ static inline void __udelay(unsigned long usecs, unsigned long lpj)
                 : "=h" (usecs), "=l" (lo)
                 : "r" (usecs), "r" (lpj)
                 : GCC_REG_ACCUM);
-        else if (sizeof(long) == 8)
+        else if (sizeof(long) == 8 && !R4000_WAR)
                 __asm__("dmultu\t%2, %3"
                 : "=h" (usecs), "=l" (lo)
                 : "r" (usecs), "r" (lpj)
                 : GCC_REG_ACCUM);
+        else if (sizeof(long) == 8 && R4000_WAR)
+                __asm__("dmultu\t%3, %4\n\tmfhi\t%0"
+                : "=r" (usecs), "=h" (hi), "=l" (lo)
+                : "r" (usecs), "r" (lpj)
+                : GCC_REG_ACCUM);
 
         __delay(usecs);
 }