irqchip/zevio: Use irq_data_get_chip_type() helper

Use irq_data_get_chip_type() instead of container_of().

Signed-off-by: Geliang Tang <geliangtang@163.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Link: http://lkml.kernel.org/r/4cc3a3a7a74c7a1894892a85aa7eabbd1534fe96.1451484758.git.geliangtang@163.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/drivers/irqchip/irq-zevio.c b/drivers/irqchip/irq-zevio.c
index 4c48fa88a03d9b54651276cfe95a8fc2d5e287af..cb9d8ec375076ca5ddde0e708ba1a226c1e75d48 100644 (file)
--- a/drivers/irqchip/irq-zevio.c
+++ b/drivers/irqchip/irq-zevio.c
@@ -43,8 +43,7 @@ static void __iomem *zevio_irq_io;
 static void zevio_irq_ack(struct irq_data *irqd)
 {
        struct irq_chip_generic *gc = irq_data_get_irq_chip_data(irqd);
-       struct irq_chip_regs *regs =
-               &container_of(irqd->chip, struct irq_chip_type, chip)->regs;
+       struct irq_chip_regs *regs = &irq_data_get_chip_type(irqd)->regs;
 
        readl(gc->reg_base + regs->ack);
 }