1 files changed, 7 insertions, 26 deletions

diff --git a/arch/sh/mm/fault.c b/arch/sh/mm/fault.c
index f33cedb353fc..60d74f793a1d 100644
--- a/arch/sh/mm/fault.c
+++ b/arch/sh/mm/fault.c
@@ -258,9 +258,6 @@ asmlinkage int __kprobes __do_page_fault(struct pt_regs *regs,
         pmd_t *pmd;
         pte_t *pte;
         pte_t entry;
-        struct mm_struct *mm = current->mm;
-        spinlock_t *ptl = NULL;
-        int ret = 1;
 
 #ifdef CONFIG_SH_KGDB
         if (kgdb_nofault && kgdb_bus_err_hook)
@@ -274,12 +271,11 @@ asmlinkage int __kprobes __do_page_fault(struct pt_regs *regs,
          */
         if (address >= P3SEG && address < P3_ADDR_MAX) {
                 pgd = pgd_offset_k(address);
-                mm = NULL;
         } else {
-                if (unlikely(address >= TASK_SIZE || !mm))
+                if (unlikely(address >= TASK_SIZE || !current->mm))
                         return 1;
 
-                pgd = pgd_offset(mm, address);
+                pgd = pgd_offset(current->mm, address);
         }
 
         pud = pud_offset(pgd, address);
@@ -289,34 +285,19 @@ asmlinkage int __kprobes __do_page_fault(struct pt_regs *regs,
         if (pmd_none_or_clear_bad(pmd))
                 return 1;
 
-        if (mm)
-                pte = pte_offset_map_lock(mm, pmd, address, &ptl);
-        else
-                pte = pte_offset_kernel(pmd, address);
-
+        pte = pte_offset_kernel(pmd, address);
         entry = *pte;
         if (unlikely(pte_none(entry) || pte_not_present(entry)))
-                goto unlock;
+                return 1;
         if (unlikely(writeaccess && !pte_write(entry)))
-                goto unlock;
+                return 1;
 
         if (writeaccess)
                 entry = pte_mkdirty(entry);
         entry = pte_mkyoung(entry);
 
-#ifdef CONFIG_CPU_SH4
-        /*
-         * ITLB is not affected by "ldtlb" instruction.
-         * So, we need to flush the entry by ourselves.
-         */
-        local_flush_tlb_one(get_asid(), address & PAGE_MASK);
-#endif
-
         set_pte(pte, entry);
         update_mmu_cache(NULL, address, entry);
-        ret = 0;
-unlock:
-        if (mm)
-                pte_unmap_unlock(pte, ptl);
-        return ret;
+
+        return 0;
 }