s390: Cio: Use the core irq stats function

Let the core do the irq_desc resolution.

No functional change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: s390 <linux-s390@vger.kernel.org>
Link: http://lkml.kernel.org/r/20140223212737.983433636@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 8ee88c4ebd83e8dcdd78f45a2adc8500205e850b..f711f0b91104db8c9bf09d06abef50e90a34754f 100644 (file)
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -584,8 +584,6 @@ static irqreturn_t do_cio_interrupt(int irq, void *dummy)
        return IRQ_HANDLED;
 }
 
-static struct irq_desc *irq_desc_io;
-
 static struct irqaction io_interrupt = {
        .name    = "IO",
        .handler = do_cio_interrupt,
@@ -596,7 +594,6 @@ void __init init_cio_interrupts(void)
        irq_set_chip_and_handler(IO_INTERRUPT,
                                 &dummy_irq_chip, handle_percpu_irq);
        setup_irq(IO_INTERRUPT, &io_interrupt);
-       irq_desc_io = irq_to_desc(IO_INTERRUPT);
 }
 
 #ifdef CONFIG_CCW_CONSOLE
@@ -623,7 +620,7 @@ void cio_tsch(struct subchannel *sch)
                local_bh_disable();
                irq_enter();
        }
-       kstat_incr_irqs_this_cpu(IO_INTERRUPT, irq_desc_io);
+       kstat_incr_irq_this_cpu(IO_INTERRUPT);
        if (sch->driver && sch->driver->irq)
                sch->driver->irq(sch);
        else