1 files changed, 9 insertions, 84 deletions

diff --git a/arch/ppc64/mm/init.c b/arch/ppc64/mm/init.c
index 4b42aff74d73..6fa1e6490b57 100644
--- a/arch/ppc64/mm/init.c
+++ b/arch/ppc64/mm/init.c
@@ -73,9 +73,6 @@ static unsigned long phbs_io_bot = PHBS_IO_BASE;
 extern pgd_t swapper_pg_dir[];
 extern struct task_struct *current_set[NR_CPUS];
 
-extern pgd_t ioremap_dir[];
-pgd_t * ioremap_pgd = (pgd_t *)&ioremap_dir;
-
 unsigned long klimit = (unsigned long)_end;
 
 unsigned long _SDR1=0;
@@ -137,69 +134,6 @@ void iounmap(volatile void __iomem *addr)
 
 #else
 
-static void unmap_im_area_pte(pmd_t *pmd, unsigned long addr,
-                                  unsigned long end)
-{
-        pte_t *pte;
-
-        pte = pte_offset_kernel(pmd, addr);
-        do {
-                pte_t ptent = ptep_get_and_clear(&ioremap_mm, addr, pte);
-                WARN_ON(!pte_none(ptent) && !pte_present(ptent));
-        } while (pte++, addr += PAGE_SIZE, addr != end);
-}
-
-static inline void unmap_im_area_pmd(pud_t *pud, unsigned long addr,
-                                     unsigned long end)
-{
-        pmd_t *pmd;
-        unsigned long next;
-
-        pmd = pmd_offset(pud, addr);
-        do {
-                next = pmd_addr_end(addr, end);
-                if (pmd_none_or_clear_bad(pmd))
-                        continue;
-                unmap_im_area_pte(pmd, addr, next);
-        } while (pmd++, addr = next, addr != end);
-}
-
-static inline void unmap_im_area_pud(pgd_t *pgd, unsigned long addr,
-                                     unsigned long end)
-{
-        pud_t *pud;
-        unsigned long next;
-
-        pud = pud_offset(pgd, addr);
-        do {
-                next = pud_addr_end(addr, end);
-                if (pud_none_or_clear_bad(pud))
-                        continue;
-                unmap_im_area_pmd(pud, addr, next);
-        } while (pud++, addr = next, addr != end);
-}
-
-static void unmap_im_area(unsigned long addr, unsigned long end)
-{
-        struct mm_struct *mm = &ioremap_mm;
-        unsigned long next;
-        pgd_t *pgd;
-
-        spin_lock(&mm->page_table_lock);
-
-        pgd = pgd_offset_i(addr);
-        flush_cache_vunmap(addr, end);
-        do {
-                next = pgd_addr_end(addr, end);
-                if (pgd_none_or_clear_bad(pgd))
-                        continue;
-                unmap_im_area_pud(pgd, addr, next);
-        } while (pgd++, addr = next, addr != end);
-        flush_tlb_kernel_range(start, end);
-
-        spin_unlock(&mm->page_table_lock);
-}
-
 /*
  * map_io_page currently only called by __ioremap
  * map_io_page adds an entry to the ioremap page table
@@ -214,21 +148,21 @@ static int map_io_page(unsigned long ea, unsigned long pa, int flags)
         unsigned long vsid;
 
         if (mem_init_done) {
-                spin_lock(&ioremap_mm.page_table_lock);
-                pgdp = pgd_offset_i(ea);
-                pudp = pud_alloc(&ioremap_mm, pgdp, ea);
+                spin_lock(&init_mm.page_table_lock);
+                pgdp = pgd_offset_k(ea);
+                pudp = pud_alloc(&init_mm, pgdp, ea);
                 if (!pudp)
                         return -ENOMEM;
-                pmdp = pmd_alloc(&ioremap_mm, pudp, ea);
+                pmdp = pmd_alloc(&init_mm, pudp, ea);
                 if (!pmdp)
                         return -ENOMEM;
-                ptep = pte_alloc_kernel(&ioremap_mm, pmdp, ea);
+                ptep = pte_alloc_kernel(&init_mm, pmdp, ea);
                 if (!ptep)
                         return -ENOMEM;
                 pa = abs_to_phys(pa);
-                set_pte_at(&ioremap_mm, ea, ptep, pfn_pte(pa >> PAGE_SHIFT,
+                set_pte_at(&init_mm, ea, ptep, pfn_pte(pa >> PAGE_SHIFT,
                                                           __pgprot(flags)));
-                spin_unlock(&ioremap_mm.page_table_lock);
+                spin_unlock(&init_mm.page_table_lock);
         } else {
                 unsigned long va, vpn, hash, hpteg;
 
@@ -267,13 +201,9 @@ static void __iomem * __ioremap_com(unsigned long addr, unsigned long pa,
 
         for (i = 0; i < size; i += PAGE_SIZE)
                 if (map_io_page(ea+i, pa+i, flags))
-                        goto failure;
+                        return NULL;
 
         return (void __iomem *) (ea + (addr & ~PAGE_MASK));
- failure:
-        if (mem_init_done)
-                unmap_im_area(ea, ea + size);
-        return NULL;
 }
 
 
@@ -381,19 +311,14 @@ int __ioremap_explicit(unsigned long pa, unsigned long ea,
  */
 void iounmap(volatile void __iomem *token)
 {
-        unsigned long address, size;
         void *addr;
 
         if (!mem_init_done)
                 return;
         
         addr = (void *) ((unsigned long __force) token & PAGE_MASK);
-        
-        if ((size = im_free(addr)) == 0)
-                return;
 
-        address = (unsigned long)addr; 
-        unmap_im_area(address, address + size);
+        im_free(addr);
 }
 
 static int iounmap_subset_regions(unsigned long addr, unsigned long size)