[PATCH] xtensa: remove io_remap_page_range and minor clean-ups

Remove io_remap_page_range() from all of Linux 2.6.x (as requested and
suggested by Randy Dunlap) and minor clean-ups.

Signed-off-by: Chris Zankel <chris@zankel.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/xtensa/kernel/pci.c

@@ -402,8 +402,8 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
 	__pci_mmap_set_flags(dev, vma, mmap_state);
 	__pci_mmap_set_pgprot(dev, vma, mmap_state, write_combine);
 
-	ret = io_remap_page_range(vma, vma->vm_start, vma->vm_pgoff<<PAGE_SHIFT,
-			       vma->vm_end - vma->vm_start, vma->vm_page_prot);
+	ret = io_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
+			         vma->vm_end - vma->vm_start,vma->vm_page_prot);
 
 	return ret;
 }

arch/xtensa/kernel/platform.c

@@ -39,7 +39,7 @@ _F(int,  pcibios_fixup, (void), { return 0; });
 _F(int, get_rtc_time, (time_t* t), { return 0; });
 _F(int, set_rtc_time, (time_t t), { return 0; });
 
-#if CONFIG_XTENSA_CALIBRATE_CCOUNT
+#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
 _F(void, calibrate_ccount, (void),
 {
   printk ("ERROR: Cannot calibrate cpu frequency! Assuming 100MHz.\n");

arch/xtensa/kernel/process.c

@@ -457,7 +457,7 @@ int
 dump_task_fpu(struct pt_regs *regs, struct task_struct *task, elf_fpregset_t *r)
 {
 /* see asm/coprocessor.h for this magic number 16 */
-#if TOTAL_CPEXTRA_SIZE > 16
+#if XTENSA_CP_EXTRA_SIZE > 16
 	do_save_fpregs (r, regs, task);
 
 	/*  For now, bit 16 means some extra state may be present:  */

arch/xtensa/kernel/setup.c

@@ -304,7 +304,7 @@ void __init setup_arch(char **cmdline_p)
 # endif
 #endif
 
-#if CONFIG_PCI
+#ifdef CONFIG_PCI
 	platform_pcibios_init();
 #endif
 }

arch/xtensa/kernel/signal.c

@@ -182,7 +182,7 @@ restore_cpextra (struct _cpstate *buf)
 
 	struct task_struct *tsk = current;
 	release_all_cp(tsk);
-	return __copy_from_user(tsk->thread.cpextra, buf, TOTAL_CPEXTRA_SIZE);
+	return __copy_from_user(tsk->thread.cpextra, buf, XTENSA_CP_EXTRA_SIZE);
 #endif
 	return 0;
 }

arch/xtensa/kernel/time.c

@@ -68,7 +68,7 @@ void __init time_init(void)
 	 * speed for the CALIBRATE.
 	 */
 
-#if CONFIG_XTENSA_CALIBRATE_CCOUNT
+#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
 	printk("Calibrating CPU frequency ");
 	platform_calibrate_ccount();
 	printk("%d.%02d MHz\n", (int)ccount_per_jiffy/(1000000/HZ),

arch/xtensa/mm/init.c

@@ -239,7 +239,7 @@ void __init mem_init(void)
 	high_memory = (void *) __va(max_mapnr << PAGE_SHIFT);
 	highmemsize = 0;
 
-#if CONFIG_HIGHMEM
+#ifdef CONFIG_HIGHMEM
 #error HIGHGMEM not implemented in init.c
 #endif
 

include/asm-xtensa/atomic.h

@@ -22,7 +22,7 @@ typedef struct { volatile int counter; } atomic_t;
 #include <asm/processor.h>
 #include <asm/system.h>
 
-#define ATOMIC_INIT(i)	( (atomic_t) { (i) } )
+#define ATOMIC_INIT(i)	{ (i) }
 
 /*
  * This Xtensa implementation assumes that the right mechanism

include/asm-xtensa/bitops.h

@@ -174,7 +174,7 @@ static __inline__ int test_bit(int nr, const volatile void *addr)
 	return 1UL & (((const volatile unsigned int *)addr)[nr>>5] >> (nr&31));
 }
 
-#if XCHAL_HAVE_NSAU
+#if XCHAL_HAVE_NSA
 
 static __inline__ int __cntlz (unsigned long x)
 {

include/asm-xtensa/hardirq.h

@@ -23,6 +23,7 @@ typedef struct {
 	unsigned int __nmi_count;	       /* arch dependent */
 } ____cacheline_aligned irq_cpustat_t;
 
+void ack_bad_irq(unsigned int irq);
 #include <linux/irq_cpustat.h>	/* Standard mappings for irq_cpustat_t above */
 
 #endif	/* _XTENSA_HARDIRQ_H */

include/asm-xtensa/semaphore.h

@@ -20,28 +20,19 @@ struct semaphore {
 	atomic_t count;
 	int sleepers;
 	wait_queue_head_t wait;
-#if WAITQUEUE_DEBUG
-	long __magic;
-#endif
 };
 
-#if WAITQUEUE_DEBUG
-# define __SEM_DEBUG_INIT(name) \
-		, (int)&(name).__magic
-#else
-# define __SEM_DEBUG_INIT(name)
-#endif
+#define __SEMAPHORE_INITIALIZER(name,n)					\
+{									\
+	.count		= ATOMIC_INIT(n),				\
+	.sleepers	= 0,						\
+	.wait		= __WAIT_QUEUE_HEAD_INITIALIZER((name).wait)	\
+}
 
-#define __SEMAPHORE_INITIALIZER(name,count)			\
-	{ ATOMIC_INIT(count), 					\
-	  0,							\
-	  __WAIT_QUEUE_HEAD_INITIALIZER((name).wait)		\
-	__SEM_DEBUG_INIT(name) }
-
-#define __MUTEX_INITIALIZER(name) \
+#define __MUTEX_INITIALIZER(name) 					\
 	__SEMAPHORE_INITIALIZER(name, 1)
 
-#define __DECLARE_SEMAPHORE_GENERIC(name,count) \
+#define __DECLARE_SEMAPHORE_GENERIC(name,count) 			\
 	struct semaphore name = __SEMAPHORE_INITIALIZER(name,count)
 
 #define DECLARE_MUTEX(name) __DECLARE_SEMAPHORE_GENERIC(name,1)
@@ -49,17 +40,8 @@ struct semaphore {
 
 static inline void sema_init (struct semaphore *sem, int val)
 {
-/*
- *	*sem = (struct semaphore)__SEMAPHORE_INITIALIZER((*sem),val);
- *
- * i'd rather use the more flexible initialization above, but sadly
- * GCC 2.7.2.3 emits a bogus warning. EGCS doesnt. Oh well.
- */
 	atomic_set(&sem->count, val);
 	init_waitqueue_head(&sem->wait);
-#if WAITQUEUE_DEBUG
-	sem->__magic = (int)&sem->__magic;
-#endif
 }
 
 static inline void init_MUTEX (struct semaphore *sem)
@@ -81,9 +63,7 @@ extern spinlock_t semaphore_wake_lock;
 
 static inline void down(struct semaphore * sem)
 {
-#if WAITQUEUE_DEBUG
-	CHECK_MAGIC(sem->__magic);
-#endif
+	might_sleep();
 
 	if (atomic_sub_return(1, &sem->count) < 0)
 		__down(sem);
@@ -92,9 +72,8 @@ static inline void down(struct semaphore * sem)
 static inline int down_interruptible(struct semaphore * sem)
 {
 	int ret = 0;
-#if WAITQUEUE_DEBUG
-	CHECK_MAGIC(sem->__magic);
-#endif
+
+	might_sleep();
 
 	if (atomic_sub_return(1, &sem->count) < 0)
 		ret = __down_interruptible(sem);
@@ -104,9 +83,6 @@ static inline int down_interruptible(struct semaphore * sem)
 static inline int down_trylock(struct semaphore * sem)
 {
 	int ret = 0;
-#if WAITQUEUE_DEBUG
-	CHECK_MAGIC(sem->__magic);
-#endif
 
 	if (atomic_sub_return(1, &sem->count) < 0)
 		ret = __down_trylock(sem);
@@ -119,9 +95,6 @@ static inline int down_trylock(struct semaphore * sem)
  */
 static inline void up(struct semaphore * sem)
 {
-#if WAITQUEUE_DEBUG
-	CHECK_MAGIC(sem->__magic);
-#endif
 	if (atomic_add_return(1, &sem->count) <= 0)
 		__up(sem);
 }

include/asm-xtensa/system.h

@@ -189,20 +189,6 @@ static inline unsigned long xchg_u32(volatile int * m, unsigned long val)
 
 #define tas(ptr) (xchg((ptr),1))
 
-#if ( __XCC__ == 1 )
-
-/* xt-xcc processes __inline__ differently than xt-gcc and decides to
- * insert an out-of-line copy of function __xchg.  This presents the
- * unresolved symbol at link time of __xchg_called_with_bad_pointer,
- * even though such a function would never be called at run-time.
- * xt-gcc always inlines __xchg, and optimizes away the undefined
- * bad_pointer function.
- */
-
-#define xchg(ptr,x) xchg_u32(ptr,x)
-
-#else  /* assume xt-gcc */
-
 #define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
 
 /*
@@ -224,8 +210,6 @@ __xchg(unsigned long x, volatile void * ptr, int size)
 	return x;
 }
 
-#endif
-
 extern void set_except_vector(int n, void *addr);
 
 static inline void spill_registers(void)