4 files changed, 24 insertions, 54 deletions

diff --git a/arch/parisc/include/asm/atomic.h b/arch/parisc/include/asm/atomic.h
index 6dd4171c9530..03862320f779 100644
--- a/arch/parisc/include/asm/atomic.h
+++ b/arch/parisc/include/asm/atomic.h
@@ -136,8 +136,6 @@ ATOMIC_OPS(xor, ^=)
 #undef ATOMIC_OP_RETURN
 #undef ATOMIC_OP
 
-#define ATOMIC_INIT(i)	{ (i) }
-
 #ifdef CONFIG_64BIT
 
 #define ATOMIC64_INIT(i) { (i) }
diff --git a/arch/parisc/include/asm/bitops.h b/arch/parisc/include/asm/bitops.h
index a09eaebfdfd0..aa4e883431c1 100644
--- a/arch/parisc/include/asm/bitops.h
+++ b/arch/parisc/include/asm/bitops.h
@@ -12,21 +12,6 @@
 #include <asm/barrier.h>
 #include <linux/atomic.h>
 
-/*
- * HP-PARISC specific bit operations
- * for a detailed description of the functions please refer
- * to include/asm-i386/bitops.h or kerneldoc
- */
-
-#if __BITS_PER_LONG == 64
-#define SHIFT_PER_LONG 6
-#else
-#define SHIFT_PER_LONG 5
-#endif
-
-#define CHOP_SHIFTCOUNT(x) (((unsigned long) (x)) & (BITS_PER_LONG - 1))
-
-
 /* See http://marc.theaimsgroup.com/?t=108826637900003 for discussion
  * on use of volatile and __*_bit() (set/clear/change):
  *	*_bit() want use of volatile.
@@ -35,10 +20,10 @@
 
 static __inline__ void set_bit(int nr, volatile unsigned long * addr)
 {
-	unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr);
+	unsigned long mask = BIT_MASK(nr);
 	unsigned long flags;
 
-	addr += (nr >> SHIFT_PER_LONG);
+	addr += BIT_WORD(nr);
 	_atomic_spin_lock_irqsave(addr, flags);
 	*addr |= mask;
 	_atomic_spin_unlock_irqrestore(addr, flags);
@@ -46,21 +31,21 @@ static __inline__ void set_bit(int nr, volatile unsigned long * addr)
 
 static __inline__ void clear_bit(int nr, volatile unsigned long * addr)
 {
-	unsigned long mask = ~(1UL << CHOP_SHIFTCOUNT(nr));
+	unsigned long mask = BIT_MASK(nr);
 	unsigned long flags;
 
-	addr += (nr >> SHIFT_PER_LONG);
+	addr += BIT_WORD(nr);
 	_atomic_spin_lock_irqsave(addr, flags);
-	*addr &= mask;
+	*addr &= ~mask;
 	_atomic_spin_unlock_irqrestore(addr, flags);
 }
 
 static __inline__ void change_bit(int nr, volatile unsigned long * addr)
 {
-	unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr);
+	unsigned long mask = BIT_MASK(nr);
 	unsigned long flags;
 
-	addr += (nr >> SHIFT_PER_LONG);
+	addr += BIT_WORD(nr);
 	_atomic_spin_lock_irqsave(addr, flags);
 	*addr ^= mask;
 	_atomic_spin_unlock_irqrestore(addr, flags);
@@ -68,12 +53,12 @@ static __inline__ void change_bit(int nr, volatile unsigned long * addr)
 
 static __inline__ int test_and_set_bit(int nr, volatile unsigned long * addr)
 {
-	unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr);
+	unsigned long mask = BIT_MASK(nr);
 	unsigned long old;
 	unsigned long flags;
 	int set;
 
-	addr += (nr >> SHIFT_PER_LONG);
+	addr += BIT_WORD(nr);
 	_atomic_spin_lock_irqsave(addr, flags);
 	old = *addr;
 	set = (old & mask) ? 1 : 0;
@@ -86,12 +71,12 @@ static __inline__ int test_and_set_bit(int nr, volatile unsigned long * addr)
 
 static __inline__ int test_and_clear_bit(int nr, volatile unsigned long * addr)
 {
-	unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr);
+	unsigned long mask = BIT_MASK(nr);
 	unsigned long old;
 	unsigned long flags;
 	int set;
 
-	addr += (nr >> SHIFT_PER_LONG);
+	addr += BIT_WORD(nr);
 	_atomic_spin_lock_irqsave(addr, flags);
 	old = *addr;
 	set = (old & mask) ? 1 : 0;
@@ -104,11 +89,11 @@ static __inline__ int test_and_clear_bit(int nr, volatile unsigned long * addr)
 
 static __inline__ int test_and_change_bit(int nr, volatile unsigned long * addr)
 {
-	unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr);
+	unsigned long mask = BIT_MASK(nr);
 	unsigned long oldbit;
 	unsigned long flags;
 
-	addr += (nr >> SHIFT_PER_LONG);
+	addr += BIT_WORD(nr);
 	_atomic_spin_lock_irqsave(addr, flags);
 	oldbit = *addr;
 	*addr = oldbit ^ mask;
diff --git a/arch/parisc/include/asm/elf.h b/arch/parisc/include/asm/elf.h
index d00973aab7f1..301af07a04d4 100644
--- a/arch/parisc/include/asm/elf.h
+++ b/arch/parisc/include/asm/elf.h
@@ -152,7 +152,7 @@
 /* The following are PA function descriptors 
  *
  * addr:	the absolute address of the function
- * gp:		either the data pointer (r27) for non-PIC code or the
+ * gp:		either the data pointer (r27) for non-PIC code or
  *		the PLT pointer (r19) for PIC code */
 
 /* Format for the Elf32 Function descriptor */
diff --git a/arch/parisc/include/asm/spinlock.h b/arch/parisc/include/asm/spinlock.h
index 70fecb8dc4e2..51b6c47f802f 100644
--- a/arch/parisc/include/asm/spinlock.h
+++ b/arch/parisc/include/asm/spinlock.h
@@ -10,34 +10,25 @@
 static inline int arch_spin_is_locked(arch_spinlock_t *x)
 {
 	volatile unsigned int *a = __ldcw_align(x);
-	smp_mb();
 	return *a == 0;
 }
 
-static inline void arch_spin_lock(arch_spinlock_t *x)
-{
-	volatile unsigned int *a;
-
-	a = __ldcw_align(x);
-	while (__ldcw(a) == 0)
-		while (*a == 0)
-			cpu_relax();
-}
+#define arch_spin_lock(lock) arch_spin_lock_flags(lock, 0)
 
 static inline void arch_spin_lock_flags(arch_spinlock_t *x,
 					 unsigned long flags)
 {
 	volatile unsigned int *a;
-	unsigned long flags_dis;
 
 	a = __ldcw_align(x);
-	while (__ldcw(a) == 0) {
-		local_save_flags(flags_dis);
-		local_irq_restore(flags);
+	while (__ldcw(a) == 0)
 		while (*a == 0)
-			cpu_relax();
-		local_irq_restore(flags_dis);
-	}
+			if (flags & PSW_SM_I) {
+				local_irq_enable();
+				cpu_relax();
+				local_irq_disable();
+			} else
+				cpu_relax();
 }
 #define arch_spin_lock_flags arch_spin_lock_flags
 
@@ -46,12 +37,8 @@ static inline void arch_spin_unlock(arch_spinlock_t *x)
 	volatile unsigned int *a;
 
 	a = __ldcw_align(x);
-#ifdef CONFIG_SMP
-	(void) __ldcw(a);
-#else
-	mb();
-#endif
-	*a = 1;
+	/* Release with ordered store. */
+	__asm__ __volatile__("stw,ma %0,0(%1)" : : "r"(1), "r"(a) : "memory");
 }
 
 static inline int arch_spin_trylock(arch_spinlock_t *x)