1 files changed, 20 insertions, 22 deletions

diff --git a/arch/sh/kernel/irq.c b/arch/sh/kernel/irq.c
index c7ebd6aec951..acf2602569c4 100644
--- a/arch/sh/kernel/irq.c
+++ b/arch/sh/kernel/irq.c
@@ -11,12 +11,15 @@
 #include <linux/module.h>
 #include <linux/kernel_stat.h>
 #include <linux/seq_file.h>
+#include <linux/io.h>
 #include <asm/irq.h>
 #include <asm/processor.h>
 #include <asm/uaccess.h>
 #include <asm/thread_info.h>
 #include <asm/cpu/mmu_context.h>
 
+atomic_t irq_err_count;
+
 /*
  * 'what should we do if we get a hw irq event on an illegal vector'.
  * each architecture has to answer this themselves, it doesn't deserve
@@ -24,6 +27,7 @@
  */
 void ack_bad_irq(unsigned int irq)
 {
+        atomic_inc(&irq_err_count);
         printk("unexpected IRQ trap at vector %02x\n", irq);
 }
 
@@ -47,8 +51,10 @@ int show_interrupts(struct seq_file *p, void *v)
                 if (!action)
                         goto unlock;
                 seq_printf(p, "%3d: ",i);
-                seq_printf(p, "%10u ", kstat_irqs(i));
-                seq_printf(p, " %14s", irq_desc[i].chip->typename);
+                for_each_online_cpu(j)
+                        seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
+                seq_printf(p, " %14s", irq_desc[i].chip->name);
+                seq_printf(p, "-%s", handle_irq_name(irq_desc[i].handle_irq));
                 seq_printf(p, "  %s", action->name);
 
                 for (action=action->next; action; action = action->next)
@@ -56,7 +62,9 @@ int show_interrupts(struct seq_file *p, void *v)
                 seq_putc(p, '\n');
 unlock:
                 spin_unlock_irqrestore(&irq_desc[i].lock, flags);
-        }
+        } else if (i == NR_IRQS)
+                seq_printf(p, "Err: %10u\n", atomic_read(&irq_err_count));
+
         return 0;
 }
 #endif
@@ -78,7 +86,8 @@ asmlinkage int do_IRQ(unsigned long r4, unsigned long r5,
                       unsigned long r6, unsigned long r7,
                       struct pt_regs regs)
 {
-        int irq = r4;
+        struct pt_regs *old_regs = set_irq_regs(&regs);
+        int irq;
 #ifdef CONFIG_4KSTACKS
         union irq_ctx *curctx, *irqctx;
 #endif
@@ -102,20 +111,9 @@ asmlinkage int do_IRQ(unsigned long r4, unsigned long r5,
 #endif
 
 #ifdef CONFIG_CPU_HAS_INTEVT
-        __asm__ __volatile__ (
-#ifdef CONFIG_CPU_HAS_SR_RB
-                "stc    r2_bank, %0\n\t"
+        irq = (ctrl_inl(INTEVT) >> 5) - 16;
 #else
-                "mov.l  @%1, %0\n\t"
-#endif
-                "shlr2  %0\n\t"
-                "shlr2  %0\n\t"
-                "shlr   %0\n\t"
-                "add    #-16, %0\n\t"
-                : "=z" (irq), "=r" (r4)
-                : "1" (INTEVT)
-                : "memory"
-        );
+        irq = r4;
 #endif
 
         irq = irq_demux(irq);
@@ -139,25 +137,25 @@ asmlinkage int do_IRQ(unsigned long r4, unsigned long r5,
 
                 __asm__ __volatile__ (
                         "mov    %0, r4          \n"
-                        "mov    %1, r5          \n"
                         "mov    r15, r9         \n"
-                        "jsr    @%2             \n"
+                        "jsr    @%1             \n"
                         /* swith to the irq stack */
-                        " mov   %3, r15         \n"
+                        " mov   %2, r15         \n"
                         /* restore the stack (ring zero) */
                         "mov    r9, r15         \n"
                         : /* no outputs */
-                        : "r" (irq), "r" (&regs), "r" (__do_IRQ), "r" (isp)
+                        : "r" (irq), "r" (generic_handle_irq), "r" (isp)
                         /* XXX: A somewhat excessive clobber list? -PFM */
                         : "memory", "r0", "r1", "r2", "r3", "r4",
                           "r5", "r6", "r7", "r8", "t", "pr"
                 );
         } else
 #endif
-                __do_IRQ(irq, &regs);
+                generic_handle_irq(irq);
 
         irq_exit();
 
+        set_irq_regs(old_regs);
         return 1;
 }