[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>

2 files changed, 1 insertions, 47 deletions

diff --git a/arch/sparc64/lib/Makefile b/arch/sparc64/lib/Makefile
index 4a725d8..c4a6d6e 100644
--- a/arch/sparc64/lib/Makefile
+++ b/arch/sparc64/lib/Makefile
@@ -14,6 +14,6 @@ lib-y := PeeCeeI.o copy_page.o clear_page.o strlen.o strncmp.o \
 	 NGmemcpy.o NGcopy_from_user.o NGcopy_to_user.o NGpatch.o \
 	 NGpage.o NGbzero.o \
 	 copy_in_user.o user_fixup.o memmove.o \
-	 mcount.o ipcsum.o rwsem.o xor.o delay.o
+	 mcount.o ipcsum.o rwsem.o xor.o
 
 obj-y += iomap.o
diff --git a/arch/sparc64/lib/delay.c b/arch/sparc64/lib/delay.c
deleted file mode 100644
index fb27e54..0000000
--- a/arch/sparc64/lib/delay.c
+++ /dev/null
@@ -1,46 +0,0 @@
-/* delay.c: Delay loops for sparc64
- *
- * Copyright (C) 2004, 2006 David S. Miller <davem@davemloft.net>
- *
- * Based heavily upon x86 variant which is:
- *	Copyright (C) 1993 Linus Torvalds
- *	Copyright (C) 1997 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
- */
-
-#include <linux/delay.h>
-#include <asm/timer.h>
-
-void __delay(unsigned long loops)
-{
-	unsigned long bclock, now;
-	
-	bclock = tick_ops->get_tick();
-	do {
-		now = tick_ops->get_tick();
-	} while ((now-bclock) < loops);
-}
-
-/* We used to multiply by HZ after shifting down by 32 bits
- * but that runs into problems for higher values of HZ and
- * slow cpus.
- */
-void __const_udelay(unsigned long n)
-{
-	n *= 4;
-
-	n *= (cpu_data(raw_smp_processor_id()).udelay_val * (HZ/4));
-	n >>= 32;
-
-	__delay(n + 1);
-}
-
-void __udelay(unsigned long n)
-{
-	__const_udelay(n * 0x10c7UL);
-}
-
-
-void __ndelay(unsigned long n)
-{
-	__const_udelay(n * 0x5UL);
-}