2 files changed, 9 insertions, 24 deletions

diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index f766e6bf370e..9efd30f6a1ed 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -52,6 +52,7 @@ config SPARC64
         select PERF_USE_VMALLOC
         select HAVE_GENERIC_HARDIRQS
         select GENERIC_HARDIRQS_NO_DEPRECATED
+        select IRQ_PREFLOW_FASTEOI
 
 config ARCH_DEFCONFIG
         string
diff --git a/arch/sparc/kernel/irq_64.c b/arch/sparc/kernel/irq_64.c
index eb16e3b8a2dd..3c8b2666c325 100644
--- a/arch/sparc/kernel/irq_64.c
+++ b/arch/sparc/kernel/irq_64.c
@@ -344,10 +344,6 @@ static void sun4u_irq_disable(struct irq_data *data)
 static void sun4u_irq_eoi(struct irq_data *data)
 {
         struct irq_handler_data *handler_data = data->handler_data;
-        struct irq_desc *desc = irq_desc + data->irq;
-
-        if (unlikely(desc->status & (IRQ_DISABLED|IRQ_INPROGRESS)))
-                return;
 
         if (likely(handler_data))
                 upa_writeq(ICLR_IDLE, handler_data->iclr);
@@ -402,12 +398,8 @@ static void sun4v_irq_disable(struct irq_data *data)
 static void sun4v_irq_eoi(struct irq_data *data)
 {
         unsigned int ino = irq_table[data->irq].dev_ino;
-        struct irq_desc *desc = irq_desc + data->irq;
         int err;
 
-        if (unlikely(desc->status & (IRQ_DISABLED|IRQ_INPROGRESS)))
-                return;
-
         err = sun4v_intr_setstate(ino, HV_INTR_STATE_IDLE);
         if (err != HV_EOK)
                 printk(KERN_ERR "sun4v_intr_setstate(%x): "
@@ -481,13 +473,9 @@ static void sun4v_virq_disable(struct irq_data *data)
 
 static void sun4v_virq_eoi(struct irq_data *data)
 {
-        struct irq_desc *desc = irq_desc + data->irq;
         unsigned long dev_handle, dev_ino;
         int err;
 
-        if (unlikely(desc->status & (IRQ_DISABLED|IRQ_INPROGRESS)))
-                return;
-
         dev_handle = irq_table[data->irq].dev_handle;
         dev_ino = irq_table[data->irq].dev_ino;
 
@@ -505,6 +493,7 @@ static struct irq_chip sun4u_irq = {
         .irq_disable            = sun4u_irq_disable,
         .irq_eoi                = sun4u_irq_eoi,
         .irq_set_affinity       = sun4u_set_affinity,
+        .flags                  = IRQCHIP_EOI_IF_HANDLED,
 };
 
 static struct irq_chip sun4v_irq = {
@@ -513,6 +502,7 @@ static struct irq_chip sun4v_irq = {
         .irq_disable            = sun4v_irq_disable,
         .irq_eoi                = sun4v_irq_eoi,
         .irq_set_affinity       = sun4v_set_affinity,
+        .flags                  = IRQCHIP_EOI_IF_HANDLED,
 };
 
 static struct irq_chip sun4v_virq = {
@@ -521,16 +511,15 @@ static struct irq_chip sun4v_virq = {
         .irq_disable            = sun4v_virq_disable,
         .irq_eoi                = sun4v_virq_eoi,
         .irq_set_affinity       = sun4v_virt_set_affinity,
+        .flags                  = IRQCHIP_EOI_IF_HANDLED,
 };
 
-static void pre_flow_handler(unsigned int irq, struct irq_desc *desc)
+static void pre_flow_handler(struct irq_data *d)
 {
-        struct irq_handler_data *handler_data = get_irq_data(irq);
-        unsigned int ino = irq_table[irq].dev_ino;
+        struct irq_handler_data *handler_data = irq_data_get_irq_handler_data(d);
+        unsigned int ino = irq_table[d->irq].dev_ino;
 
         handler_data->pre_handler(ino, handler_data->arg1, handler_data->arg2);
-
-        handle_fasteoi_irq(irq, desc);
 }
 
 void irq_install_pre_handler(int irq,
@@ -538,13 +527,12 @@ void irq_install_pre_handler(int irq,
                              void *arg1, void *arg2)
 {
         struct irq_handler_data *handler_data = get_irq_data(irq);
-        struct irq_desc *desc = irq_desc + irq;
 
         handler_data->pre_handler = func;
         handler_data->arg1 = arg1;
         handler_data->arg2 = arg2;
 
-        desc->handle_irq = pre_flow_handler;
+        __irq_set_preflow_handler(irq, pre_flow_handler);
 }
 
 unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap)
@@ -734,7 +722,6 @@ void __irq_entry handler_irq(int pil, struct pt_regs *regs)
         orig_sp = set_hardirq_stack();
 
         while (bucket_pa) {
-                struct irq_desc *desc;
                 unsigned long next_pa;
                 unsigned int irq;
 
@@ -742,10 +729,7 @@ void __irq_entry handler_irq(int pil, struct pt_regs *regs)
                 irq = bucket_get_irq(bucket_pa);
                 bucket_clear_chain_pa(bucket_pa);
 
-                desc = irq_desc + irq;
-
-                if (!(desc->status & IRQ_DISABLED))
-                        desc->handle_irq(irq, desc);
+                generic_handle_irq(irq);
 
                 bucket_pa = next_pa;
         }