pinctrl: sunxi: Remove irq_mask_ack and use irq_ack instead

If irq_mask_ack is not defined, mask_ack_irq will call irq_mask and then
irq_ack. In order to avoid code duplication, between irq_mask_ack and irq_mask,
just declare irq_ack.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/sunxi/pinctrl-sunxi.c

@@ -573,26 +573,14 @@ static int sunxi_pinctrl_irq_set_type(struct irq_data *d,
 	return 0;
 }
 
-static void sunxi_pinctrl_irq_mask_ack(struct irq_data *d)
+static void sunxi_pinctrl_irq_ack(struct irq_data *d)
 {
 	struct sunxi_pinctrl *pctl = irq_data_get_irq_chip_data(d);
-	u32 ctrl_reg = sunxi_irq_ctrl_reg(d->hwirq);
-	u8 ctrl_idx = sunxi_irq_ctrl_offset(d->hwirq);
 	u32 status_reg = sunxi_irq_status_reg(d->hwirq);
 	u8 status_idx = sunxi_irq_status_offset(d->hwirq);
-	unsigned long flags;
-	u32 val;
-
-	spin_lock_irqsave(&pctl->lock, flags);
-
-	/* Mask the IRQ */
-	val = readl(pctl->membase + ctrl_reg);
-	writel(val & ~(1 << ctrl_idx), pctl->membase + ctrl_reg);
 
 	/* Clear the IRQ */
 	writel(1 << status_idx, pctl->membase + status_reg);
-
-	spin_unlock_irqrestore(&pctl->lock, flags);
 }
 
 static void sunxi_pinctrl_irq_mask(struct irq_data *d)
@@ -638,8 +626,8 @@ static void sunxi_pinctrl_irq_unmask(struct irq_data *d)
 }
 
 static struct irq_chip sunxi_pinctrl_irq_chip = {
+	.irq_ack	= sunxi_pinctrl_irq_ack,
 	.irq_mask	= sunxi_pinctrl_irq_mask,
-	.irq_mask_ack	= sunxi_pinctrl_irq_mask_ack,
 	.irq_unmask	= sunxi_pinctrl_irq_unmask,
 	.irq_set_type	= sunxi_pinctrl_irq_set_type,
 };