[SPARC]: Kill io_remap_page_range()

It's been deprecated long enough and there are no in-tree
users any longer.
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc/kernel/sparc_ksyms.c

@@ -175,7 +175,6 @@ EXPORT_SYMBOL(set_auxio);
 EXPORT_SYMBOL(get_auxio);
 #endif
 EXPORT_SYMBOL(request_fast_irq);
-EXPORT_SYMBOL(io_remap_page_range);
 EXPORT_SYMBOL(io_remap_pfn_range);
   /* P3: iounit_xxx may be needed, sun4d users */
 /* EXPORT_SYMBOL(iounit_map_dma_init); */

arch/sparc/mm/generic.c

@@ -16,31 +16,6 @@
 #include <asm/cacheflush.h>
 #include <asm/tlbflush.h>
 
-static inline void forget_pte(pte_t page)
-{
-#if 0 /* old 2.4 code */
-	if (pte_none(page))
-		return;
-	if (pte_present(page)) {
-		unsigned long pfn = pte_pfn(page);
-		struct page *ptpage;
-		if (!pfn_valid(pfn))
-			return;
-		ptpage = pfn_to_page(pfn);
-		if (PageReserved(ptpage))
-			return;
-		page_cache_release(ptpage);
-		return;
-	}
-	swap_free(pte_to_swp_entry(page));
-#else
-	if (!pte_none(page)) {
-		printk("forget_pte: old mapping existed!\n");
-		BUG();
-	}
-#endif
-}
-
 /* Remap IO memory, the same way as remap_pfn_range(), but use
  * the obio memory space.
  *
@@ -60,7 +35,6 @@ static inline void io_remap_pte_range(struct mm_struct *mm, pte_t * pte, unsigne
 		pte_t oldpage = *pte;
 		pte_clear(mm, address, pte);
 		set_pte(pte, mk_pte_io(offset, prot, space));
-		forget_pte(oldpage);
 		address += PAGE_SIZE;
 		offset += PAGE_SIZE;
 		pte++;
@@ -88,37 +62,6 @@ static inline int io_remap_pmd_range(struct mm_struct *mm, pmd_t * pmd, unsigned
 	return 0;
 }
 
-int io_remap_page_range(struct vm_area_struct *vma, unsigned long from, unsigned long offset, unsigned long size, pgprot_t prot, int space)
-{
-	int error = 0;
-	pgd_t * dir;
-	unsigned long beg = from;
-	unsigned long end = from + size;
-	struct mm_struct *mm = vma->vm_mm;
-
-	prot = __pgprot(pg_iobits);
-	offset -= from;
-	dir = pgd_offset(mm, from);
-	flush_cache_range(vma, beg, end);
-
-	spin_lock(&mm->page_table_lock);
-	while (from < end) {
-		pmd_t *pmd = pmd_alloc(current->mm, dir, from);
-		error = -ENOMEM;
-		if (!pmd)
-			break;
-		error = io_remap_pmd_range(mm, pmd, from, end - from, offset + from, prot, space);
-		if (error)
-			break;
-		from = (from + PGDIR_SIZE) & PGDIR_MASK;
-		dir++;
-	}
-	spin_unlock(&mm->page_table_lock);
-
-	flush_tlb_range(vma, beg, end);
-	return error;
-}
-
 int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
 			unsigned long pfn, unsigned long size, pgprot_t prot)
 {

arch/sparc64/kernel/pci.c

@@ -736,8 +736,7 @@ static void __pci_mmap_set_flags(struct pci_dev *dev, struct vm_area_struct *vma
 static void __pci_mmap_set_pgprot(struct pci_dev *dev, struct vm_area_struct *vma,
 					     enum pci_mmap_state mmap_state)
 {
-	/* Our io_remap_page_range/io_remap_pfn_range takes care of this,
-	   do nothing. */
+	/* Our io_remap_pfn_range takes care of this, do nothing.  */
 }
 
 /* Perform the actual remap of the pages for a PCI device mapping, as appropriate

arch/sparc64/kernel/sparc64_ksyms.c

@@ -88,8 +88,6 @@ extern int svr4_setcontext(svr4_ucontext_t *uc, struct pt_regs *regs);
 extern int compat_sys_ioctl(unsigned int fd, unsigned int cmd, u32 arg);
 extern int (*handle_mathemu)(struct pt_regs *, struct fpustate *);
 extern long sparc32_open(const char __user * filename, int flags, int mode);
-extern int io_remap_page_range(struct vm_area_struct *vma, unsigned long from,
-	unsigned long offset, unsigned long size, pgprot_t prot, int space);
 extern int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
 	unsigned long pfn, unsigned long size, pgprot_t prot);
 extern void (*prom_palette)(int);
@@ -245,7 +243,6 @@ EXPORT_SYMBOL(pci_dma_supported);
 #endif
 
 /* I/O device mmaping on Sparc64. */
-EXPORT_SYMBOL(io_remap_page_range);
 EXPORT_SYMBOL(io_remap_pfn_range);
 
 /* Solaris/SunOS binary compatibility */

arch/sparc64/mm/generic.c

@@ -116,37 +116,6 @@ static inline int io_remap_pud_range(struct mm_struct *mm, pud_t * pud, unsigned
 	return 0;
 }
 
-int io_remap_page_range(struct vm_area_struct *vma, unsigned long from, unsigned long offset, unsigned long size, pgprot_t prot, int space)
-{
-	int error = 0;
-	pgd_t * dir;
-	unsigned long beg = from;
-	unsigned long end = from + size;
-	struct mm_struct *mm = vma->vm_mm;
-
-	prot = __pgprot(pg_iobits);
-	offset -= from;
-	dir = pgd_offset(mm, from);
-	flush_cache_range(vma, beg, end);
-
-	spin_lock(&mm->page_table_lock);
-	while (from < end) {
-		pud_t *pud = pud_alloc(mm, dir, from);
-		error = -ENOMEM;
-		if (!pud)
-			break;
-		error = io_remap_pud_range(mm, pud, from, end - from, offset + from, prot, space);
-		if (error)
-			break;
-		from = (from + PGDIR_SIZE) & PGDIR_MASK;
-		dir++;
-	}
-	flush_tlb_range(vma, beg, end);
-	spin_unlock(&mm->page_table_lock);
-
-	return error;
-}
-
 int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
 		unsigned long pfn, unsigned long size, pgprot_t prot)
 {

include/asm-sparc/pgtable.h

@@ -435,9 +435,6 @@ extern unsigned long *sparc_valid_addr_bitmap;
 #define kern_addr_valid(addr) \
 	(test_bit(__pa((unsigned long)(addr))>>20, sparc_valid_addr_bitmap))
 
-extern int io_remap_page_range(struct vm_area_struct *vma,
-			       unsigned long from, unsigned long to,
-			       unsigned long size, pgprot_t prot, int space);
 extern int io_remap_pfn_range(struct vm_area_struct *vma,
 			      unsigned long from, unsigned long pfn,
 			      unsigned long size, pgprot_t prot);

include/asm-sparc64/pgtable.h

@@ -410,9 +410,6 @@ extern unsigned long *sparc64_valid_addr_bitmap;
 #define kern_addr_valid(addr)	\
 	(test_bit(__pa((unsigned long)(addr))>>22, sparc64_valid_addr_bitmap))
 
-extern int io_remap_page_range(struct vm_area_struct *vma, unsigned long from,
-			       unsigned long offset,
-			       unsigned long size, pgprot_t prot, int space);
 extern int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
 			       unsigned long pfn,
 			       unsigned long size, pgprot_t prot);