linux-kernel - [PATCH 6/9] gpio: ath79: use devm_platform_ioremap_resource

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Date:   Thu, 29 Aug 2019 16:37:39 +0200
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Jonathan Corbet <corbet@....net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Alban Bedel <albeu@...e.fr>,
        Linus Walleij <linus.walleij@...aro.org>,
        Arnd Bergmann <arnd@...db.de>,
        Geert Uytterhoeven <geert+renesas@...der.be>
Cc:     linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-gpio@...r.kernel.org, Julia Lawall <Julia.Lawall@...6.fr>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: [PATCH 6/9] gpio: ath79: use devm_platform_ioremap_resource_nocache()

From: Bartosz Golaszewski <bgolaszewski@...libre.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 <bgolaszewski@...libre.com>
---
 drivers/gpio/gpio-ath79.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/gpio/gpio-ath79.c b/drivers/gpio/gpio-ath79.c
index f1a5ea9b3de2..c2c5d7dd2575 100644
--- a/drivers/gpio/gpio-ath79.c
+++ b/drivers/gpio/gpio-ath79.c
@@ -226,7 +226,6 @@ static int ath79_gpio_probe(struct platform_device *pdev)
 	struct device_node *np = dev->of_node;
 	struct ath79_gpio_ctrl *ctrl;
 	struct gpio_irq_chip *girq;
-	struct resource *res;
 	u32 ath79_gpio_count;
 	bool oe_inverted;
 	int err;
@@ -256,12 +255,9 @@ static int ath79_gpio_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res)
-		return -EINVAL;
-	ctrl->base = devm_ioremap_nocache(dev, res->start, resource_size(res));
-	if (!ctrl->base)
-		return -ENOMEM;
+	ctrl->base = devm_platform_ioremap_resource_nocache(pdev, 0);
+	if (IS_ERR(ctrl->base))
+		return PTR_ERR(ctrl->base);
 
 	raw_spin_lock_init(&ctrl->lock);
 	err = bgpio_init(&ctrl->gc, dev, 4,
-- 
2.21.0