gpio: em: use devm_platform_ioremap_resource()

There's no need to use the nocache variant of ioremap(). Switch to
using devm_platform_ioremap_resource().

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

diff --git a/drivers/gpio/gpio-em.c b/drivers/gpio/gpio-em.c
index 620f25b..674ebeb 100644 (file)
--- a/drivers/gpio/gpio-em.c
+++ b/drivers/gpio/gpio-em.c
@@ -269,7 +269,7 @@ static void em_gio_irq_domain_remove(void *data)
 static int em_gio_probe(struct platform_device *pdev)
 {
        struct em_gio_priv *p;
-       struct resource *io[2], *irq[2];
+       struct resource *irq[2];
        struct gpio_chip *gpio_chip;
        struct irq_chip *irq_chip;
        struct device *dev = &pdev->dev;
@@ -285,25 +285,21 @@ static int em_gio_probe(struct platform_device *pdev)
        platform_set_drvdata(pdev, p);
        spin_lock_init(&p->sense_lock);
 
-       io[0] = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-       io[1] = platform_get_resource(pdev, IORESOURCE_MEM, 1);
        irq[0] = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
        irq[1] = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
 
-       if (!io[0] || !io[1] || !irq[0] || !irq[1]) {
+       if (!irq[0] || !irq[1]) {
                dev_err(dev, "missing IRQ or IOMEM\n");
                return -EINVAL;
        }
 
-       p->base0 = devm_ioremap_nocache(dev, io[0]->start,
-                                       resource_size(io[0]));
-       if (!p->base0)
-               return -ENOMEM;
+       p->base0 = devm_platform_ioremap_resource(pdev, 0);
+       if (IS_ERR(p->base0))
+               return PTR_ERR(p->base0);
 
-       p->base1 = devm_ioremap_nocache(dev, io[1]->start,
-                                  resource_size(io[1]));
-       if (!p->base1)
-               return -ENOMEM;
+       p->base1 = devm_platform_ioremap_resource(pdev, 1);
+       if (IS_ERR(p->base1))
+               return PTR_ERR(p->base1);
 
        if (of_property_read_u32(dev->of_node, "ngpios", &ngpios)) {
                dev_err(dev, "Missing ngpios OF property\n");