linux-kernel - [PATCH 1/2] pinctrl: pxa3xx: Use devm_request_and

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Date:	Mon, 12 Nov 2012 14:45:50 +0800
From:	Axel Lin <axel.lin@...ics.com>
To:	Linus Walleij <linus.walleij@...aro.org>
Cc:	Haojian Zhuang <haojian.zhuang@...il.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] pinctrl: pxa3xx: Use devm_request_and_ioremap

Use managed resources API to simplify the code.
Also ensure we do request mem_region before ioremap.

Signed-off-by: Axel Lin <axel.lin@...ics.com>
---
 drivers/pinctrl/pinctrl-pxa3xx.c |   10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-pxa3xx.c b/drivers/pinctrl/pinctrl-pxa3xx.c
index f14cd6b..43e3dd0 100644
--- a/drivers/pinctrl/pinctrl-pxa3xx.c
+++ b/drivers/pinctrl/pinctrl-pxa3xx.c
@@ -173,7 +173,6 @@ int pxa3xx_pinctrl_register(struct platform_device *pdev,
 {
 	struct pinctrl_desc *desc;
 	struct resource *res;
-	int ret = 0;
 
 	if (!info || !info->cputype)
 		return -EINVAL;
@@ -190,21 +189,17 @@ int pxa3xx_pinctrl_register(struct platform_device *pdev,
 		return -ENOENT;
 	info->phy_base = res->start;
 	info->phy_size = resource_size(res);
-	info->virt_base = ioremap(info->phy_base, info->phy_size);
+	info->virt_base = devm_request_and_ioremap(&pdev->dev, res);
 	if (!info->virt_base)
 		return -ENOMEM;
 	info->pctrl = pinctrl_register(desc, &pdev->dev, info);
 	if (!info->pctrl) {
 		dev_err(&pdev->dev, "failed to register PXA pinmux driver\n");
-		ret = -EINVAL;
-		goto err;
+		return -EINVAL;
 	}
 	pinctrl_add_gpio_range(info->pctrl, &pxa3xx_pinctrl_gpio_range);
 	platform_set_drvdata(pdev, info);
 	return 0;
-err:
-	iounmap(info->virt_base);
-	return ret;
 }
 
 int pxa3xx_pinctrl_unregister(struct platform_device *pdev)
@@ -212,7 +207,6 @@ int pxa3xx_pinctrl_unregister(struct platform_device *pdev)
 	struct pxa3xx_pinmux_info *info = platform_get_drvdata(pdev);
 
 	pinctrl_unregister(info->pctrl);
-	iounmap(info->virt_base);
 	platform_set_drvdata(pdev, NULL);
 	return 0;
 }
-- 
1.7.9.5



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