irq: simplify for_each_irq_desc() usage

[linux-beck.git] / drivers / xen / events.c

diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 9ce1ab6c268d7e0c23d2223cc09b74ababae1b7f..e26733a9df21d5ca583ad09bea26dfea909873da 100644 (file)
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -141,8 +141,9 @@ static void init_evtchn_cpu_bindings(void)
        int i;
 
        /* By default all event channels notify CPU#0. */
-       for_each_irq_desc(i, desc)
+       for_each_irq_desc(i, desc) {
                desc->affinity = cpumask_of_cpu(0);
+       }
 #endif
 
        memset(cpu_evtchn, 0, sizeof(cpu_evtchn));
@@ -229,15 +230,20 @@ static void unmask_evtchn(int port)
 static int find_unbound_irq(void)
 {
        int irq;
+       struct irq_desc *desc;
 
        /* Only allocate from dynirq range */
-       for_each_irq_nr(irq)
+       for (irq = 0; irq < nr_irqs; irq++)
                if (irq_bindcount[irq] == 0)
                        break;
 
        if (irq == nr_irqs)
                panic("No available IRQ to bind to: increase nr_irqs!\n");
 
+       desc = irq_to_desc_alloc_cpu(irq, 0);
+       if (WARN_ON(desc == NULL))
+               return -1;
+
        return irq;
 }
 
@@ -774,7 +780,7 @@ void xen_poll_irq(int irq)
 
                poll.nr_ports = 1;
                poll.timeout = 0;
-               poll.ports = &evtchn;
+               set_xen_guest_handle(poll.ports, &evtchn);
 
                if (HYPERVISOR_sched_op(SCHEDOP_poll, &poll) != 0)
                        BUG();
@@ -792,7 +798,7 @@ void xen_irq_resume(void)
                mask_evtchn(evtchn);
 
        /* No IRQ <-> event-channel mappings. */
-       for_each_irq_nr(irq)
+       for (irq = 0; irq < nr_irqs; irq++)
                irq_info[irq].evtchn = 0; /* zap event-channel binding */
 
        for (evtchn = 0; evtchn < NR_EVENT_CHANNELS; evtchn++)
@@ -824,7 +830,7 @@ void __init xen_init_IRQ(void)
                mask_evtchn(i);
 
        /* Dynamic IRQ space is currently unbound. Zero the refcnts. */
-       for_each_irq_nr(i)
+       for (i = 0; i < nr_irqs; i++)
                irq_bindcount[i] = 0;
 
        irq_ctx_init(smp_processor_id());