2 files changed, 17 insertions, 11 deletions

diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c
index d955aaefbb8e..a00b0e7ab9b1 100644
--- a/arch/mips/kernel/irq.c
+++ b/arch/mips/kernel/irq.c
@@ -55,13 +55,15 @@ unsigned long irq_hwmask[NR_IRQS];
  */
 asmlinkage unsigned int do_IRQ(unsigned int irq, struct pt_regs *regs)
 {
+        struct pt_regs *old_regs = set_irq_regs(regs);
         irq_enter();
 
         __DO_IRQ_SMTC_HOOK();
-        __do_IRQ(irq, regs);
+        __do_IRQ(irq);
 
         irq_exit();
 
+        set_irq_regs(old_regs);
         return 1;
 }
 
diff --git a/arch/mips/kernel/time.c b/arch/mips/kernel/time.c
index a8340802f2d7..d349eb9e4ffb 100644
--- a/arch/mips/kernel/time.c
+++ b/arch/mips/kernel/time.c
@@ -322,18 +322,18 @@ static long last_rtc_update;
  * a broadcasted inter-processor interrupt which itself is triggered
  * by the global timer interrupt.
  */
-void local_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+void local_timer_interrupt(int irq, void *dev_id)
 {
         if (current->pid)
-                profile_tick(CPU_PROFILING, regs);
-        update_process_times(user_mode(regs));
+                profile_tick(CPU_PROFILING);
+        update_process_times(user_mode(get_irq_regs()));
 }
 
 /*
  * High-level timer interrupt service routines.  This function
  * is set as irqaction->handler and is invoked through do_IRQ.
  */
-irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t timer_interrupt(int irq, void *dev_id)
 {
         unsigned long j;
         unsigned int count;
@@ -419,23 +419,24 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
          * In SMP mode, local_timer_interrupt() is invoked by appropriate
          * low-level local timer interrupt handler.
          */
-        local_timer_interrupt(irq, dev_id, regs);
+        local_timer_interrupt(irq, dev_id);
 
         return IRQ_HANDLED;
 }
 
-int null_perf_irq(struct pt_regs *regs)
+int null_perf_irq(void)
 {
         return 0;
 }
 
-int (*perf_irq)(struct pt_regs *regs) = null_perf_irq;
+int (*perf_irq)(void) = null_perf_irq;
 
 EXPORT_SYMBOL(null_perf_irq);
 EXPORT_SYMBOL(perf_irq);
 
 asmlinkage void ll_timer_interrupt(int irq, struct pt_regs *regs)
 {
+        struct pt_regs *old_regs = set_irq_regs(regs);
         int r2 = cpu_has_mips_r2;
 
         irq_enter();
@@ -448,27 +449,30 @@ asmlinkage void ll_timer_interrupt(int irq, struct pt_regs *regs)
          * performance counter interrupt handler anyway.
          */
         if (!r2 || (read_c0_cause() & (1 << 26)))
-                if (perf_irq(regs))
+                if (perf_irq())
                         goto out;
 
         /* we keep interrupt disabled all the time */
         if (!r2 || (read_c0_cause() & (1 << 30)))
-                timer_interrupt(irq, NULL, regs);
+                timer_interrupt(irq, NULL);
 
 out:
         irq_exit();
+        set_irq_regs(old_regs);
 }
 
 asmlinkage void ll_local_timer_interrupt(int irq, struct pt_regs *regs)
 {
+        struct pt_regs *old_regs = set_irq_regs(regs);
         irq_enter();
         if (smp_processor_id() != 0)
                 kstat_this_cpu.irqs[irq]++;
 
         /* we keep interrupt disabled all the time */
-        local_timer_interrupt(irq, NULL, regs);
+        local_timer_interrupt(irq, NULL);
 
         irq_exit();
+        set_irq_regs(old_regs);
 }
 
 /*