Revert "gpio: merrifield: Move hardware initialization to callback"

This reverts commit 4c87540.

This revert is a prerequisite for the later revert of commit
8f86a5b.

Reported-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-merrifield.c

@@ -362,9 +362,8 @@ static void mrfld_irq_handler(struct irq_desc *desc)
 	chained_irq_exit(irqchip, desc);
 }
 
-static int mrfld_irq_init_hw(struct gpio_chip *chip)
+static void mrfld_irq_init_hw(struct mrfld_gpio *priv)
 {
-	struct mrfld_gpio *priv = gpiochip_get_data(chip);
 	void __iomem *reg;
 	unsigned int base;
 
@@ -376,8 +375,6 @@ static int mrfld_irq_init_hw(struct gpio_chip *chip)
 		reg = gpio_reg(&priv->chip, base, GFER);
 		writel(0, reg);
 	}
-
-	return 0;
 }
 
 static const char *mrfld_gpio_get_pinctrl_dev_name(struct mrfld_gpio *priv)
@@ -450,7 +447,6 @@ static int mrfld_gpio_probe(struct pci_dev *pdev, const struct pci_device_id *id
 
 	girq = &priv->chip.irq;
 	girq->chip = &mrfld_irqchip;
-	girq->init_hw = mrfld_irq_init_hw;
 	girq->parent_handler = mrfld_irq_handler;
 	girq->num_parents = 1;
 	girq->parents = devm_kcalloc(&pdev->dev, girq->num_parents,
@@ -463,6 +459,8 @@ static int mrfld_gpio_probe(struct pci_dev *pdev, const struct pci_device_id *id
 	girq->default_type = IRQ_TYPE_NONE;
 	girq->handler = handle_bad_irq;
 
+	mrfld_irq_init_hw(priv);
+
 	pci_set_drvdata(pdev, priv);
 	retval = devm_gpiochip_add_data(&pdev->dev, &priv->chip, priv);
 	if (retval) {