linux-kernel - [PATCH] pinctrl: nomadik: fix incorrect type in return expression

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Date:   Fri,  4 Aug 2017 13:49:47 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     linux-gpio@...r.kernel.org
Cc:     Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-arm-kernel@...ts.infradead.org,
        Alessandro Rubini <rubini@...pv.it>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] pinctrl: nomadik: fix incorrect type in return expression

Sparse reports "warning: incorrect type in return expression (different
address spaces)" because nmk_gpio_populate_chip() is supposed to return
(struct nmk_gpio_chip *) whereas devm_ioremap_resource() returns
(void __iomem *).  ERR_CAST() is needed to fix the warning.

Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
---

 drivers/pinctrl/nomadik/pinctrl-nomadik.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pinctrl/nomadik/pinctrl-nomadik.c b/drivers/pinctrl/nomadik/pinctrl-nomadik.c
index d318ca055489..a53f1a9b1ed2 100644
--- a/drivers/pinctrl/nomadik/pinctrl-nomadik.c
+++ b/drivers/pinctrl/nomadik/pinctrl-nomadik.c
@@ -1078,7 +1078,7 @@ static struct nmk_gpio_chip *nmk_gpio_populate_chip(struct device_node *np,
 	res = platform_get_resource(gpio_pdev, IORESOURCE_MEM, 0);
 	base = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(base))
-		return base;
+		return ERR_CAST(base);
 	nmk_chip->addr = base;
 
 	clk = clk_get(&gpio_pdev->dev, NULL);
-- 
2.7.4