[PATCH 5/9] gpio: em: use devm_platform_ioremap_resource_nocache()

[Bartosz Golaszewski]

From: Bartosz Golaszewski <bgolaszew...@baylibre.com>

Use the new devm_platform_ioremap_resource_nocache() helper for memory
range mapping instead of devm_ioremap_nocache() combined with a call to
platform_get_resource().

Signed-off-by: Bartosz Golaszewski <bgolaszew...@baylibre.com>
---
 drivers/gpio/gpio-em.c | 22 +++++++++-------------
 1 file changed, 9 insertions(+), 13 deletions(-)

diff --git a/drivers/gpio/gpio-em.c b/drivers/gpio/gpio-em.c
index a87951293aaa..0f4f5e11278a 100644
--- 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;
        const char *name = dev_name(&pdev->dev);
@@ -284,25 +284,21 @@ 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]) {
-               dev_err(&pdev->dev, "missing IRQ or IOMEM\n");
+       if (!irq[0] || !irq[1]) {
+               dev_err(&pdev->dev, "missing IRQ resources\n");
                return -EINVAL;
        }
 
-       p->base0 = devm_ioremap_nocache(&pdev->dev, io[0]->start,
-                                       resource_size(io[0]));
-       if (!p->base0)
-               return -ENOMEM;
+       p->base0 = devm_platform_ioremap_resource_nocache(pdev, 0);
+       if (IS_ERR(p->base0))
+               return PTR_ERR(p->base0);
 
-       p->base1 = devm_ioremap_nocache(&pdev->dev, io[1]->start,
-                                  resource_size(io[1]));
-       if (!p->base1)
-               return -ENOMEM;
+       p->base1 = devm_platform_ioremap_resource_nocache(pdev, 1);
+       if (IS_ERR(p->base1))
+               return PTR_ERR(p->base1);
 
        if (of_property_read_u32(pdev->dev.of_node, "ngpios", &ngpios)) {
                dev_err(&pdev->dev, "Missing ngpios OF property\n");
-- 
2.21.0