linux-kernel - [PATCH 1/1] gpio/vt8500: Convert to devm_ioremap

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Date:	Mon,  4 Mar 2013 14:39:39 +0530
From:	Sachin Kamat <sachin.kamat@...aro.org>
To:	linux-kernel@...r.kernel.org
Cc:	linux@...sktech.co.nz, grant.likely@...retlab.ca,
	linus.walleij@...aro.org, sachin.kamat@...aro.org,
	thierry.reding@...onic-design.de
Subject: [PATCH 1/1] gpio/vt8500: Convert to devm_ioremap_resource()

Use the newly introduced devm_ioremap_resource() instead of
devm_request_and_ioremap() which provides more consistent error handling.

devm_ioremap_resource() provides its own error messages; so all explicit
error messages can be removed from the failure code paths.

Signed-off-by: Sachin Kamat <sachin.kamat@...aro.org>
---
 drivers/gpio/gpio-vt8500.c |    8 +++-----
 1 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/gpio/gpio-vt8500.c b/drivers/gpio/gpio-vt8500.c
index 81683ca..b2d8d6f 100644
--- a/drivers/gpio/gpio-vt8500.c
+++ b/drivers/gpio/gpio-vt8500.c
@@ -309,11 +309,9 @@ static int vt8500_gpio_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	gpio_base = devm_request_and_ioremap(&pdev->dev, res);
-	if (!gpio_base) {
-		dev_err(&pdev->dev, "Unable to map GPIO registers\n");
-		return -ENOMEM;
-	}
+	gpio_base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(gpio_base))
+		return PTR_ERR(gpio_base);
 
 	ret = vt8500_add_chips(pdev, gpio_base, of_id->data);
 
-- 
1.7.4.1

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