1 files changed, 30 insertions, 14 deletions

diff --git a/arch/mips/sgi-ip32/ip32-irq.c b/arch/mips/sgi-ip32/ip32-irq.c
index 2eb22d692ed..8ba08047d16 100644
--- a/arch/mips/sgi-ip32/ip32-irq.c
+++ b/arch/mips/sgi-ip32/ip32-irq.c
@@ -31,12 +31,12 @@
 /* issue a PIO read to make sure no PIO writes are pending */
 static void inline flush_crime_bus(void)
 {
-	volatile unsigned long junk = crime->control;
+	crime->control;
 }
 
 static void inline flush_mace_bus(void)
 {
-	volatile unsigned long junk = mace->perif.ctrl.misc;
+	mace->perif.ctrl.misc;
 }
 
 #undef DEBUG_IRQ
@@ -130,8 +130,6 @@ struct irqaction memerr_irq = { crime_memerr_intr, SA_INTERRUPT,
 struct irqaction cpuerr_irq = { crime_cpuerr_intr, SA_INTERRUPT,
 			CPU_MASK_NONE, "CRIME CPU error", NULL, NULL };
 
-extern void ip32_handle_int(void);
-
 /*
  * For interrupts wired from a single device to the CPU.  Only the clock
  * uses this it seems, which is IRQ 0 and IP7.
@@ -503,48 +501,67 @@ static void ip32_unknown_interrupt(struct pt_regs *regs)
 
 /* CRIME 1.1 appears to deliver all interrupts to this one pin. */
 /* change this to loop over all edge-triggered irqs, exception masked out ones */
-void ip32_irq0(struct pt_regs *regs)
+static void ip32_irq0(struct pt_regs *regs)
 {
 	uint64_t crime_int;
 	int irq = 0;
 
 	crime_int = crime->istat & crime_mask;
-	irq = ffs(crime_int);
-	crime_int = 1 << (irq - 1);
+	irq = __ffs(crime_int);
+	crime_int = 1 << irq;
 
 	if (crime_int & CRIME_MACEISA_INT_MASK) {
 		unsigned long mace_int = mace->perif.ctrl.istat;
-		irq = ffs(mace_int & maceisa_mask) + 32;
+		irq = __ffs(mace_int & maceisa_mask) + 32;
 	}
+	irq++;
 	DBG("*irq %u*\n", irq);
 	do_IRQ(irq, regs);
 }
 
-void ip32_irq1(struct pt_regs *regs)
+static void ip32_irq1(struct pt_regs *regs)
 {
 	ip32_unknown_interrupt(regs);
 }
 
-void ip32_irq2(struct pt_regs *regs)
+static void ip32_irq2(struct pt_regs *regs)
 {
 	ip32_unknown_interrupt(regs);
 }
 
-void ip32_irq3(struct pt_regs *regs)
+static void ip32_irq3(struct pt_regs *regs)
 {
 	ip32_unknown_interrupt(regs);
 }
 
-void ip32_irq4(struct pt_regs *regs)
+static void ip32_irq4(struct pt_regs *regs)
 {
 	ip32_unknown_interrupt(regs);
 }
 
-void ip32_irq5(struct pt_regs *regs)
+static void ip32_irq5(struct pt_regs *regs)
 {
 	ll_timer_interrupt(IP32_R4K_TIMER_IRQ, regs);
 }
 
+asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+{
+	unsigned int pending = read_c0_cause();
+
+	if (likely(pending & IE_IRQ0))
+		ip32_irq0(regs);
+	else if (unlikely(pending & IE_IRQ1))
+		ip32_irq1(regs);
+	else if (unlikely(pending & IE_IRQ2))
+		ip32_irq2(regs);
+	else if (unlikely(pending & IE_IRQ3))
+		ip32_irq3(regs);
+	else if (unlikely(pending & IE_IRQ4))
+		ip32_irq4(regs);
+	else if (likely(pending & IE_IRQ5))
+		ip32_irq5(regs);
+}
+
 void __init arch_init_irq(void)
 {
 	unsigned int irq;
@@ -556,7 +573,6 @@ void __init arch_init_irq(void)
 	crime->soft_int = 0;
 	mace->perif.ctrl.istat = 0;
 	mace->perif.ctrl.imask = 0;
-	set_except_vector(0, ip32_handle_int);
 
 	for (irq = 0; irq <= IP32_IRQ_MAX; irq++) {
 		hw_irq_controller *controller;