[SPARC64]: More sensible udelay implementation.

Take a page from the powerpc folks and just calculate the
delay factor directly.

Since frequency scaling chips use a system-tick register,
the value is going to be the same system-wide.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 26 deletions

diff --git a/include/asm-sparc64/delay.h b/include/asm-sparc64/delay.h
index a4aae6f80627..a77aa622d762 100644
--- a/include/asm-sparc64/delay.h
+++ b/include/asm-sparc64/delay.h
@@ -1,37 +1,17 @@
 /* delay.h: Linux delay routines on sparc64.
  *
- * Copyright (C) 1996, 2004 David S. Miller (davem@davemloft.net).
- *
- * Based heavily upon x86 variant which is:
- * Copyright (C) 1993 Linus Torvalds
- *
- * Delay routines calling functions in arch/sparc64/lib/delay.c
+ * Copyright (C) 1996, 2004, 2007 David S. Miller (davem@davemloft.net).
  */
 
-#ifndef __SPARC64_DELAY_H
-#define __SPARC64_DELAY_H
-
-#include <linux/param.h>
-#include <asm/cpudata.h>
+#ifndef _SPARC64_DELAY_H
+#define _SPARC64_DELAY_H
 
 #ifndef __ASSEMBLY__
 
-extern void __bad_udelay(void);
-extern void __bad_ndelay(void);
-
-extern void __udelay(unsigned long usecs);
-extern void __ndelay(unsigned long nsecs);
-extern void __const_udelay(unsigned long usecs);
 extern void __delay(unsigned long loops);
-
-#define udelay(n) (__builtin_constant_p(n) ? \
-        ((n) > 20000 ? __bad_udelay() : __const_udelay((n) * 0x10c7ul)) : \
-        __udelay(n))
-        
-#define ndelay(n) (__builtin_constant_p(n) ? \
-        ((n) > 20000 ? __bad_ndelay() : __const_udelay((n) * 5ul)) : \
-        __ndelay(n))
+extern void udelay(unsigned long usecs);
+#define mdelay(n)       udelay((n) * 1000)
 
 #endif /* !__ASSEMBLY__ */
 
-#endif /* defined(__SPARC64_DELAY_H) */
+#endif /* _SPARC64_DELAY_H */