bcma: gpio: Use irqchip template

This makes the driver use the irqchip template to assign
properties to the gpio_irq_chip instead of using the
explicit call to gpiochip_irqchip_add().

The irqchip is instead added while adding the gpiochip.

Cc: Rafał Miłecki <[e-mail]>
Cc: Florian Fainelli <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>
Signed-off-by: Kalle Valo <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

drivers/bcma/driver_gpio.c

···
 static int bcma_gpio_irq_init(struct bcma_drv_cc *cc)
 {
 	struct gpio_chip *chip = &cc->gpio;
+	struct gpio_irq_chip *girq = &chip->irq;
 	int hwirq, err;
 
 	if (cc->core->bus->hosttype != BCMA_HOSTTYPE_SOC)
···
 	bcma_chipco_gpio_intmask(cc, ~0, 0);
 	bcma_cc_set32(cc, BCMA_CC_IRQMASK, BCMA_CC_IRQ_GPIO);
 
-	err =  gpiochip_irqchip_add(chip,
-				    &bcma_gpio_irq_chip,
-				    0,
-				    handle_simple_irq,
-				    IRQ_TYPE_NONE);
-	if (err) {
-		free_irq(hwirq, cc);
-		return err;
-	}
+	girq->chip = &bcma_gpio_irq_chip;
+	/* This will let us handle the parent IRQ in the driver */
+	girq->parent_handler = NULL;
+	girq->num_parents = 0;
+	girq->parents = NULL;
+	girq->default_type = IRQ_TYPE_NONE;
+	girq->handler = handle_simple_irq;
 
 	return 0;
 }
···
 	else
 		chip->base		= -1;
 
-	err = gpiochip_add_data(chip, cc);
+	err = bcma_gpio_irq_init(cc);
 	if (err)
 		return err;
 
-	err = bcma_gpio_irq_init(cc);
+	err = gpiochip_add_data(chip, cc);
 	if (err) {
-		gpiochip_remove(chip);
+		bcma_gpio_irq_exit(cc);
 		return err;
 	}