ia64: Drop unused NEW_LOCK spinlock code and clean up unneeded test

	in kernel unwinder.

arch/ia64/kernel/unwind.c

@@ -318,11 +318,6 @@ unw_access_gr (struct unw_frame_info *info, int regnum, unsigned long *val, char
 			}
 		} else {
 			/* access a scratch register */
-			if (!info->pt) {
-				UNW_DPRINT(0, "unwind.%s: no pt-regs; cannot access r%d\n",
-					   __FUNCTION__, regnum);
-				return -1;
-			}
 			pt = get_scratch_regs(info);
 			addr = (unsigned long *) (pt + pt_regs_off(regnum));
 			if (info->pri_unat_loc)

include/asm-ia64/spinlock.h

@@ -2,7 +2,7 @@
 #define _ASM_IA64_SPINLOCK_H
 
 /*
- * Copyright (C) 1998-2002 Hewlett-Packard Co
+ * Copyright (C) 1998-2003 Hewlett-Packard Co
  *	David Mosberger-Tang <davidm@hpl.hp.com>
  * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
  *
@@ -15,58 +15,6 @@
 #include <asm/bitops.h>
 #include <asm/atomic.h>
 
-#undef NEW_LOCK
-
-#ifdef NEW_LOCK
-
-typedef struct {
-	volatile unsigned int lock;
-} spinlock_t;
-
-#define SPIN_LOCK_UNLOCKED			(spinlock_t) { 0 }
-#define spin_lock_init(x)			((x)->lock = 0)
-
-/*
- * Streamlined test_and_set_bit(0, (x)).  We use test-and-test-and-set
- * rather than a simple xchg to avoid writing the cache-line when
- * there is contention.
- */
-#define _raw_spin_lock(x)								\
-{											\
-	register char *addr __asm__ ("r31") = (char *) &(x)->lock;			\
-											\
-	__asm__ __volatile__ (								\
-		"mov r30=1\n"								\
-		"mov ar.ccv=r0\n"							\
-		";;\n"									\
-		"cmpxchg4.acq r30=[%0],r30,ar.ccv\n"					\
-		";;\n"									\
-		"cmp.ne p15,p0=r30,r0\n"						\
-		"(p15) br.call.spnt.few b7=ia64_spinlock_contention\n"			\
-		";;\n"									\
-		"1:\n"				/* force a new bundle */		\
-		:: "r"(addr)								\
-		: "ar.ccv", "ar.pfs", "b7", "p15", "r28", "r29", "r30", "memory");	\
-}
-
-#define _raw_spin_trylock(x)								\
-({											\
-	register long result;								\
-											\
-	__asm__ __volatile__ (								\
-		"mov ar.ccv=r0\n"							\
-		";;\n"									\
-		"cmpxchg4.acq %0=[%2],%1,ar.ccv\n"					\
-		: "=r"(result) : "r"(1), "r"(&(x)->lock) : "ar.ccv", "memory");		\
-	(result == 0);									\
-})
-
-#define spin_is_locked(x)	((x)->lock != 0)
-#define _raw_spin_unlock(x)	do { barrier(); ((spinlock_t *) x)->lock = 0;} while (0)
-#define spin_unlock_wait(x)	do { barrier(); } while ((x)->lock)
-
-#else /* !NEW_LOCK */
-
 typedef struct {
 	volatile unsigned int lock;
 } spinlock_t;
@@ -123,8 +71,6 @@ do {											\
 #define _raw_spin_trylock(x)	(cmpxchg_acq(&(x)->lock, 0, 1) == 0)
 #define spin_unlock_wait(x)	do { barrier(); } while ((x)->lock)
 
-#endif /* !NEW_LOCK */
-
 typedef struct {
 	volatile int read_counter:31;
 	volatile int write_lock:1;