Merge ../linux-2.6-watchdog-mm

[linux-drm-fsl-dcu.git] / arch / sh / kernel / irq.c

diff --git a/arch/sh/kernel/irq.c b/arch/sh/kernel/irq.c
index c7ebd6aec9514cdb4f16583a94a6570e01262440..944128ce97066ff46bc67cae6a5ce98a3717e9d6 100644 (file)
--- 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, "-%-8s", irq_desc[i].name);
                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;
 }