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i2c: au1550: Convert to devm_kzalloc and devm_ioremap_resource

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Use devm_* APIs to simplify the code.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Tested-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Axel Lin 2015-06-09 15:52:49 +08:00 committed by Wolfram Sang
parent 9e685c84c2
commit 174f2366b0
1 changed files with 13 additions and 39 deletions
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52
drivers/i2c/busses/i2c-au1550.c
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@ -48,7 +48,6 @@ struct i2c_au1550_data {
void __iomem *psc_base;
int xfer_timeout;
struct i2c_adapter adap;
struct resource *ioarea;
};
static inline void WR(struct i2c_au1550_data *a, int r, unsigned long v)
@ -315,30 +314,16 @@ i2c_au1550_probe(struct platform_device *pdev)
struct resource *r;
int ret;
priv = devm_kzalloc(&pdev->dev, sizeof(struct i2c_au1550_data),
GFP_KERNEL);
if (!priv)
return -ENOMEM;
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!r) {
ret = -ENODEV;
goto out;
}
priv->psc_base = devm_ioremap_resource(&pdev->dev, r);
if (IS_ERR(priv->psc_base))
return PTR_ERR(priv->psc_base);
priv = kzalloc(sizeof(struct i2c_au1550_data), GFP_KERNEL);
if (!priv) {
ret = -ENOMEM;
goto out;
}
priv->ioarea = request_mem_region(r->start, resource_size(r),
pdev->name);
if (!priv->ioarea) {
ret = -EBUSY;
goto out_mem;
}
priv->psc_base = ioremap(r->start, resource_size(r));
if (!priv->psc_base) {
ret = -EIO;
goto out_map;
}
priv->xfer_timeout = 200;
priv->adap.nr = pdev->id;
@ -351,20 +336,13 @@ i2c_au1550_probe(struct platform_device *pdev)
i2c_au1550_setup(priv);
ret = i2c_add_numbered_adapter(&priv->adap);
if (ret == 0) {
platform_set_drvdata(pdev, priv);
return 0;
if (ret) {
i2c_au1550_disable(priv);
return ret;
}
i2c_au1550_disable(priv);
iounmap(priv->psc_base);
out_map:
release_resource(priv->ioarea);
kfree(priv->ioarea);
out_mem:
kfree(priv);
out:
return ret;
platform_set_drvdata(pdev, priv);
return 0;
}
static int i2c_au1550_remove(struct platform_device *pdev)
@ -373,10 +351,6 @@ static int i2c_au1550_remove(struct platform_device *pdev)
i2c_del_adapter(&priv->adap);
i2c_au1550_disable(priv);
iounmap(priv->psc_base);
release_resource(priv->ioarea);
kfree(priv->ioarea);
kfree(priv);
return 0;
}