avr32/irq: Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc

Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc while we
already have a pointer to corresponding irq_desc.

Signed-off-by: Jiang Liu <[email protected]>
Acked-by: Hans-Christian Egtvedt <[email protected]>
Cc: Haavard Skinnemoen <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>

Author: Jiang Liu

arch/avr32/mach-at32ap/pio.c

@@ -286,7 +286,7 @@ static void gpio_irq_handler(unsigned irq, struct irq_desc *desc)
 	struct pio_device	*pio = irq_desc_get_chip_data(desc);
 	unsigned		gpio_irq;
 
-	gpio_irq = (unsigned) irq_get_handler_data(irq);
+	gpio_irq = (unsigned) irq_desc_get_handler_data(desc);
 	for (;;) {
 		u32		isr;