x86/ioapic.c: convert __target_IO_APIC_irq to conventional for() loop

Use a normal for() loop in __target_IO_APIC_irq().

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>

diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 8245e62..17883cd 100644 (file)
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -2236,13 +2236,9 @@ static void __target_IO_APIC_irq(unsigned int irq, unsigned int dest, struct irq
        struct irq_pin_list *entry;
        u8 vector = cfg->vector;
 
-       entry = cfg->irq_2_pin;
-       for (;;) {
+       for (entry = cfg->irq_2_pin; entry != NULL; entry = entry->next) {
                unsigned int reg;
 
-               if (!entry)
-                       break;
-
                apic = entry->apic;
                pin = entry->pin;
                /*
@@ -2255,9 +2251,6 @@ static void __target_IO_APIC_irq(unsigned int irq, unsigned int dest, struct irq
                reg &= ~IO_APIC_REDIR_VECTOR_MASK;
                reg |= vector;
                io_apic_modify(apic, 0x10 + pin*2, reg);
-               if (!entry->next)
-                       break;
-               entry = entry->next;
        }
 }