[PATCH v3 3/3] pinctrl: mvebu: Convert to use devm_ioremap_resource

From: Jisheng Zhang
Date: Mon Aug 26 2013 - 06:01:28 EST


The resource mapped by of_iomap() isn't unmapped in error path. This
patch fixes the resource leakage by using devm_ioremap_resource() instead
of of_iomap().

Signed-off-by: Jisheng Zhang <jszhang@xxxxxxxxxxx>
Reviewed-by: Ezequiel Garcia <ezequiel.garcia@xxxxxxxxxxxxxxxxxx>
---
drivers/pinctrl/mvebu/pinctrl-mvebu.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/pinctrl/mvebu/pinctrl-mvebu.c b/drivers/pinctrl/mvebu/pinctrl-mvebu.c
index bb7ddb1..1caa45f 100644
--- a/drivers/pinctrl/mvebu/pinctrl-mvebu.c
+++ b/drivers/pinctrl/mvebu/pinctrl-mvebu.c
@@ -579,7 +579,7 @@ static int mvebu_pinctrl_build_functions(struct platform_device *pdev,
int mvebu_pinctrl_probe(struct platform_device *pdev)
{
struct mvebu_pinctrl_soc_info *soc = dev_get_platdata(&pdev->dev);
- struct device_node *np = pdev->dev.of_node;
+ struct resource *res;
struct mvebu_pinctrl *pctl;
void __iomem *base;
struct pinctrl_pin_desc *pdesc;
@@ -591,11 +591,10 @@ int mvebu_pinctrl_probe(struct platform_device *pdev)
return -EINVAL;
}

- base = of_iomap(np, 0);
- if (!base) {
- dev_err(&pdev->dev, "unable to get base address\n");
- return -ENODEV;
- }
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(base))
+ return PTR_ERR(base);

pctl = devm_kzalloc(&pdev->dev, sizeof(struct mvebu_pinctrl),
GFP_KERNEL);
--
1.8.4.rc3

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