linux-kernel - [PATCH] pci: convert to devm_ioremap

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Date:	Mon, 11 Mar 2013 09:42:33 +0200
From:	Silviu-Mihai Popescu <silviupopescu1990@...il.com>
To:	linux-mips@...ux-mips.org
Cc:	ralf@...ux-mips.org, juhosg@...nwrt.org, blogic@...nwrt.org,
	xsecute@...glemail.com, linux-kernel@...r.kernel.org,
	Silviu-Mihai Popescu <silviupopescu1990@...il.com>
Subject: [PATCH] pci: convert to devm_ioremap_resource()

Convert all uses of devm_request_and_ioremap() to the newly introduced
devm_ioremap_resource() 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: Silviu-Mihai Popescu <silviupopescu1990@...il.com>
---
 arch/mips/pci/pci-ar724x.c |   18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/arch/mips/pci/pci-ar724x.c b/arch/mips/pci/pci-ar724x.c
index 8a0700d..65ec032 100644
--- a/arch/mips/pci/pci-ar724x.c
+++ b/arch/mips/pci/pci-ar724x.c
@@ -365,25 +365,25 @@ static int ar724x_pci_probe(struct platform_device *pdev)
 	if (!res)
 		return -EINVAL;
 
-	apc->ctrl_base = devm_request_and_ioremap(&pdev->dev, res);
-	if (apc->ctrl_base == NULL)
-		return -EBUSY;
+	apc->ctrl_base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(apc->ctrl_base))
+		return PTR_ERR(apc->ctrl_base);
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cfg_base");
 	if (!res)
 		return -EINVAL;
 
-	apc->devcfg_base = devm_request_and_ioremap(&pdev->dev, res);
-	if (!apc->devcfg_base)
-		return -EBUSY;
+	apc->devcfg_base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(apc->devcfg_base))
+		return PTR_ERR(apc->devcfg_base);
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "crp_base");
 	if (!res)
 		return -EINVAL;
 
-	apc->crp_base = devm_request_and_ioremap(&pdev->dev, res);
-	if (apc->crp_base == NULL)
-		return -EBUSY;
+	apc->crp_base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(apc->crp_base))
+		return PTR_ERR(apc->crp_base);
 
 	apc->irq = platform_get_irq(pdev, 0);
 	if (apc->irq < 0)
-- 
1.7.9.5

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