[ARM] do_bad_area() always takes current and current->active_mm

Since do_bad_area() always takes the currently active task and
(supposed to) take the currently active MM, there's no point passing
them to this function.  Instead, obtain references to them inside
do_bad_area().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

3 files changed, 8 insertions, 14 deletions

diff --git a/arch/arm/mm/alignment.c b/arch/arm/mm/alignment.c
index e0d21bbbe7d7..aa109f074dd9 100644
--- a/arch/arm/mm/alignment.c
+++ b/arch/arm/mm/alignment.c
@@ -735,7 +735,7 @@ do_alignment(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
         /*
          * We got a fault - fix it up, or die.
          */
-        do_bad_area(current, current->mm, addr, fsr, regs);
+        do_bad_area(addr, fsr, regs);
         return 0;
 
  swp:
diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
index c5e0622c7765..f0943d160ffe 100644
--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -131,10 +131,11 @@ __do_user_fault(struct task_struct *tsk, unsigned long addr,
         force_sig_info(sig, &si, tsk);
 }
 
-void
-do_bad_area(struct task_struct *tsk, struct mm_struct *mm, unsigned long addr,
-            unsigned int fsr, struct pt_regs *regs)
+void do_bad_area(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
 {
+        struct task_struct *tsk = current;
+        struct mm_struct *mm = tsk->active_mm;
+
         /*
          * If we are in kernel mode at this point, we
          * have no context to handle this fault with.
@@ -319,7 +320,6 @@ static int
 do_translation_fault(unsigned long addr, unsigned int fsr,
                      struct pt_regs *regs)
 {
-        struct task_struct *tsk;
         unsigned int index;
         pgd_t *pgd, *pgd_k;
         pmd_t *pmd, *pmd_k;
@@ -351,9 +351,7 @@ do_translation_fault(unsigned long addr, unsigned int fsr,
         return 0;
 
 bad_area:
-        tsk = current;
-
-        do_bad_area(tsk, tsk->active_mm, addr, fsr, regs);
+        do_bad_area(addr, fsr, regs);
         return 0;
 }
 
@@ -364,8 +362,7 @@ bad_area:
 static int
 do_sect_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
 {
-        struct task_struct *tsk = current;
-        do_bad_area(tsk, tsk->active_mm, addr, fsr, regs);
+        do_bad_area(addr, fsr, regs);
         return 0;
 }
 
diff --git a/arch/arm/mm/fault.h b/arch/arm/mm/fault.h
index 73b59e83227f..49e9e3804de4 100644
--- a/arch/arm/mm/fault.h
+++ b/arch/arm/mm/fault.h
@@ -1,6 +1,3 @@
-void do_bad_area(struct task_struct *tsk, struct mm_struct *mm,
-                 unsigned long addr, unsigned int fsr, struct pt_regs *regs);
-
-void show_pte(struct mm_struct *mm, unsigned long addr);
+void do_bad_area(unsigned long addr, unsigned int fsr, struct pt_regs *regs);
 
 unsigned long search_exception_table(unsigned long addr);