Remove the leftover of sparseirqs.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 {
        struct irq_desc *desc;
 
-       /* first time to use this irq_desc */
-       if (irq < 16)
-               desc = irq_to_desc(irq);
-       else
-               desc = irq_to_desc_alloc(irq);
+       desc = irq_to_desc(irq);
 
        if ((trigger == IOAPIC_AUTO && IO_APIC_irq_trigger(irq)) ||
            trigger == IOAPIC_LEVEL)
 
         */
        for (i = 0; i < 16; i++) {
                /* first time call this irq_desc */
-               struct irq_desc *desc = irq_to_desc_alloc(i);
+               struct irq_desc *desc = irq_to_desc(i);
 
                desc->status = IRQ_DISABLED;
                desc->action = NULL;
 
 
        for (i = 0; i < 16; i++) {
                /* first time call this irq_desc */
-               struct irq_desc *desc = irq_to_desc_alloc(i);
+               struct irq_desc *desc = irq_to_desc(i);
 
                desc->status = IRQ_DISABLED;
                desc->action = NULL;
 
        return (irq < nr_irqs) ? irq_desc + irq : NULL;
 }
 
-static inline struct irq_desc *irq_to_desc_alloc(unsigned int irq)
-{
-       return irq_to_desc(irq);
-}
-
 #ifdef CONFIG_HAVE_DYN_ARRAY
 #define kstat_irqs_this_cpu(DESC) \
        ((DESC)->kstat_irqs[smp_processor_id()])
 
        unsigned long flags;
 
        /* first time to use this irq_desc */
-       desc = irq_to_desc_alloc(irq);
+       desc = irq_to_desc(irq);
        if (!desc) {
                WARN(1, KERN_ERR "Trying to initialize invalid IRQ%d\n", irq);
                return;