gpio/rockchip: Convert to generic_handle_domain_irq()

Follow commit dbd1c54fc820 ("gpio: Bulk conversion to
generic_handle_domain_irq()").

Signed-off-by: Jeffy Chen <[e-mail]>
Reviewed-by: Linus Walleij <[e-mail]>
Signed-off-by: Bartosz Golaszewski <[e-mail]>

drivers/gpio/gpio-rockchip.c

···
 {
 	struct irq_chip *chip = irq_desc_get_chip(desc);
 	struct rockchip_pin_bank *bank = irq_desc_get_handler_data(desc);
-	u32 pend;
+	unsigned long pending;
+	unsigned int irq;
 
 	dev_dbg(bank->dev, "got irq for bank %s\n", bank->name);
 
 	chained_irq_enter(chip, desc);
 
-	pend = readl_relaxed(bank->reg_base + bank->gpio_regs->int_status);
-
-	while (pend) {
-		unsigned int irq, virq;
-
-		irq = __ffs(pend);
-		pend &= ~BIT(irq);
-		virq = irq_find_mapping(bank->domain, irq);
-
-		if (!virq) {
-			dev_err(bank->dev, "unmapped irq %d\n", irq);
-			continue;
-		}
-
+	pending = readl_relaxed(bank->reg_base + bank->gpio_regs->int_status);
+	for_each_set_bit(irq, &pending, 32) {
 		dev_dbg(bank->dev, "handling irq %d\n", irq);
 
 		/*
···
 			} while ((data & BIT(irq)) != (data_old & BIT(irq)));
 		}
 
-		generic_handle_irq(virq);
+		generic_handle_domain_irq(bank->domain, irq);
 	}
 
 	chained_irq_exit(chip, desc);