[PATCH] minimal alpha pt_regs fixes

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

4 files changed, 13 insertions, 6 deletions

diff --git a/arch/alpha/kernel/irq.c b/arch/alpha/kernel/irq.c
index 729c475d2269..dba4e70926f5 100644
--- a/arch/alpha/kernel/irq.c
+++ b/arch/alpha/kernel/irq.c
@@ -129,6 +129,7 @@ unlock:
 void
 handle_irq(int irq, struct pt_regs * regs)
 {       
+        struct pt_regs *old_regs;
         /* 
          * We ack quickly, we don't want the irq controller
          * thinking we're snobs just because some other CPU has
@@ -149,6 +150,7 @@ handle_irq(int irq, struct pt_regs * regs)
                 return;
         }
 
+        old_regs = set_irq_regs(regs);
         irq_enter();
         /*
          * __do_IRQ() must be called with IPL_MAX. Note that we do not
@@ -157,6 +159,7 @@ handle_irq(int irq, struct pt_regs * regs)
          * at IPL 0.
          */
         local_irq_disable();
-        __do_IRQ(irq, regs);
+        __do_IRQ(irq);
         irq_exit();
+        set_irq_regs(old_regs);
 }
diff --git a/arch/alpha/kernel/proto.h b/arch/alpha/kernel/proto.h
index 21f71287b6f5..408bda25b0b1 100644
--- a/arch/alpha/kernel/proto.h
+++ b/arch/alpha/kernel/proto.h
@@ -133,7 +133,7 @@ extern void smp_percpu_timer_interrupt(struct pt_regs *);
 /* extern void reset_for_srm(void); */
 
 /* time.c */
-extern irqreturn_t timer_interrupt(int irq, void *dev, struct pt_regs * regs);
+extern irqreturn_t timer_interrupt(int irq, void *dev);
 extern void common_init_rtc(void);
 extern unsigned long est_cycle_freq;
 
diff --git a/arch/alpha/kernel/smp.c b/arch/alpha/kernel/smp.c
index 4dc273e537fd..596780e2c7da 100644
--- a/arch/alpha/kernel/smp.c
+++ b/arch/alpha/kernel/smp.c
@@ -515,12 +515,15 @@ smp_cpus_done(unsigned int max_cpus)
 void
 smp_percpu_timer_interrupt(struct pt_regs *regs)
 {
+        struct pt_regs *old_regs;
         int cpu = smp_processor_id();
         unsigned long user = user_mode(regs);
         struct cpuinfo_alpha *data = &cpu_data[cpu];
 
+        old_regs = set_irq_regs(regs);
+
         /* Record kernel PC.  */
-        profile_tick(CPU_PROFILING, regs);
+        profile_tick(CPU_PROFILING);
 
         if (!--data->prof_counter) {
                 /* We need to make like a normal interrupt -- otherwise
@@ -534,6 +537,7 @@ smp_percpu_timer_interrupt(struct pt_regs *regs)
 
                 irq_exit();
         }
+        set_irq_regs(old_regs);
 }
 
 int __init
diff --git a/arch/alpha/kernel/time.c b/arch/alpha/kernel/time.c
index 581ddcc22fc5..cf0666523989 100644
--- a/arch/alpha/kernel/time.c
+++ b/arch/alpha/kernel/time.c
@@ -104,7 +104,7 @@ unsigned long long sched_clock(void)
  * timer_interrupt() needs to keep up the real-time clock,
  * as well as call the "do_timer()" routine every clocktick
  */
-irqreturn_t timer_interrupt(int irq, void *dev, struct pt_regs * regs)
+irqreturn_t timer_interrupt(int irq, void *dev)
 {
         unsigned long delta;
         __u32 now;
@@ -112,7 +112,7 @@ irqreturn_t timer_interrupt(int irq, void *dev, struct pt_regs * regs)
 
 #ifndef CONFIG_SMP
         /* Not SMP, do kernel PC profiling here.  */
-        profile_tick(CPU_PROFILING, regs);
+        profile_tick(CPU_PROFILING);
 #endif
 
         write_seqlock(&xtime_lock);
@@ -132,7 +132,7 @@ irqreturn_t timer_interrupt(int irq, void *dev, struct pt_regs * regs)
         while (nticks > 0) {
                 do_timer(1);
 #ifndef CONFIG_SMP
-                update_process_times(user_mode(regs));
+                update_process_times(user_mode(get_irq_regs()));
 #endif
                 nticks--;
         }