1 files changed, 23 insertions, 52 deletions

diff --git a/arch/metag/kernel/irq.c b/arch/metag/kernel/irq.c
index 87707efeb0a..5385dd1216b 100644
--- a/arch/metag/kernel/irq.c
+++ b/arch/metag/kernel/irq.c
@@ -25,7 +25,7 @@ static union irq_ctx *hardirq_ctx[NR_CPUS] __read_mostly;
 static union irq_ctx *softirq_ctx[NR_CPUS] __read_mostly;
 #endif
 
-struct irq_domain *root_domain;
+static struct irq_domain *root_domain;
 
 static unsigned int startup_meta_irq(struct irq_data *data)
 {
@@ -159,44 +159,30 @@ void irq_ctx_exit(int cpu)
 
 extern asmlinkage void __do_softirq(void);
 
-asmlinkage void do_softirq(void)
+void do_softirq_own_stack(void)
 {
-	unsigned long flags;
 	struct thread_info *curctx;
 	union irq_ctx *irqctx;
 	u32 *isp;
 
-	if (in_interrupt())
-		return;
-
-	local_irq_save(flags);
-
-	if (local_softirq_pending()) {
-		curctx = current_thread_info();
-		irqctx = softirq_ctx[smp_processor_id()];
-		irqctx->tinfo.task = curctx->task;
-
-		/* build the stack frame on the softirq stack */
-		isp = (u32 *) ((char *)irqctx + sizeof(struct thread_info));
-
-		asm volatile (
-			"MOV   D0.5,%0\n"
-			"SWAP  A0StP,D0.5\n"
-			"CALLR D1RtP,___do_softirq\n"
-			"MOV   A0StP,D0.5\n"
-			:
-			: "r" (isp)
-			: "memory", "cc", "D1Ar1", "D0Ar2", "D1Ar3", "D0Ar4",
-			  "D1Ar5", "D0Ar6", "D0Re0", "D1Re0", "D0.4", "D1RtP",
-			  "D0.5"
-			);
-		/*
-		 * Shouldn't happen, we returned above if in_interrupt():
-		 */
-		WARN_ON_ONCE(softirq_count());
-	}
-
-	local_irq_restore(flags);
+	curctx = current_thread_info();
+	irqctx = softirq_ctx[smp_processor_id()];
+	irqctx->tinfo.task = curctx->task;
+
+	/* build the stack frame on the softirq stack */
+	isp = (u32 *) ((char *)irqctx + sizeof(struct thread_info));
+
+	asm volatile (
+		"MOV   D0.5,%0\n"
+		"SWAP  A0StP,D0.5\n"
+		"CALLR D1RtP,___do_softirq\n"
+		"MOV   A0StP,D0.5\n"
+		:
+		: "r" (isp)
+		: "memory", "cc", "D1Ar1", "D0Ar2", "D1Ar3", "D0Ar4",
+		  "D1Ar5", "D0Ar6", "D0Re0", "D1Re0", "D0.4", "D1RtP",
+		  "D0.5"
+		);
 }
 #endif
 
@@ -275,17 +261,6 @@ int __init arch_probe_nr_irqs(void)
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
-static void route_irq(struct irq_data *data, unsigned int irq, unsigned int cpu)
-{
-	struct irq_desc *desc = irq_to_desc(irq);
-	struct irq_chip *chip = irq_data_get_irq_chip(data);
-
-	raw_spin_lock_irq(&desc->lock);
-	if (chip->irq_set_affinity)
-		chip->irq_set_affinity(data, cpumask_of(cpu), false);
-	raw_spin_unlock_irq(&desc->lock);
-}
-
 /*
  * The CPU has been marked offline.  Migrate IRQs off this CPU.  If
  * the affinity settings do not allow other CPUs, force them onto any
@@ -294,10 +269,9 @@ static void route_irq(struct irq_data *data, unsigned int irq, unsigned int cpu)
 void migrate_irqs(void)
 {
 	unsigned int i, cpu = smp_processor_id();
-	struct irq_desc *desc;
 
-	for_each_irq_desc(i, desc) {
-		struct irq_data *data = irq_desc_get_irq_data(desc);
+	for_each_active_irq(i) {
+		struct irq_data *data = irq_get_irq_data(i);
 		unsigned int newcpu;
 
 		if (irqd_is_per_cpu(data))
@@ -313,11 +287,8 @@ void migrate_irqs(void)
 					    i, cpu);
 
 			cpumask_setall(data->affinity);
-			newcpu = cpumask_any_and(data->affinity,
-						 cpu_online_mask);
 		}
-
-		route_irq(data, i, newcpu);
+		irq_set_affinity(i, data->affinity);
 	}
 }
 #endif /* CONFIG_HOTPLUG_CPU */