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ASoC: atmel-ssc: use devm_xxx() managed function

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Using the devm_xxx() managed function to stripdown the error
and remove code.

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Bo Shen 2012-10-16 11:56:58 +08:00 committed by Mark Brown
parent 6f0c0580b7
commit 2e4de7b32a
1 changed files with 15 additions and 32 deletions
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47
drivers/misc/atmel-ssc.c
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@ -70,37 +70,33 @@ EXPORT_SYMBOL(ssc_free);
static int __init ssc_probe(struct platform_device *pdev)
{
int retval = 0;
struct resource *regs;
struct ssc_device *ssc;
ssc = kzalloc(sizeof(struct ssc_device), GFP_KERNEL);
ssc = devm_kzalloc(&pdev->dev, sizeof(struct ssc_device), GFP_KERNEL);
if (!ssc) {
dev_dbg(&pdev->dev, "out of memory\n");
retval = -ENOMEM;
goto out;
return -ENOMEM;
}
ssc->pdev = pdev;
regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!regs) {
dev_dbg(&pdev->dev, "no mmio resource defined\n");
retval = -ENXIO;
goto out_free;
return -ENXIO;
}
ssc->clk = clk_get(&pdev->dev, "pclk");
if (IS_ERR(ssc->clk)) {
dev_dbg(&pdev->dev, "no pclk clock defined\n");
retval = -ENXIO;
goto out_free;
}
ssc->pdev = pdev;
ssc->regs = ioremap(regs->start, resource_size(regs));
ssc->regs = devm_request_and_ioremap(&pdev->dev, regs);
if (!ssc->regs) {
dev_dbg(&pdev->dev, "ioremap failed\n");
retval = -EINVAL;
goto out_clk;
return -EINVAL;
}
ssc->clk = devm_clk_get(&pdev->dev, "pclk");
if (IS_ERR(ssc->clk)) {
dev_dbg(&pdev->dev, "no pclk clock defined\n");
return -ENXIO;
}
/* disable all interrupts */
@ -112,8 +108,7 @@ static int __init ssc_probe(struct platform_device *pdev)
ssc->irq = platform_get_irq(pdev, 0);
if (!ssc->irq) {
dev_dbg(&pdev->dev, "could not get irq\n");
retval = -ENXIO;
goto out_unmap;
return -ENXIO;
}
spin_lock(&user_lock);
@ -125,16 +120,7 @@ static int __init ssc_probe(struct platform_device *pdev)
dev_info(&pdev->dev, "Atmel SSC device at 0x%p (irq %d)\n",
ssc->regs, ssc->irq);
goto out;
out_unmap:
iounmap(ssc->regs);
out_clk:
clk_put(ssc->clk);
out_free:
kfree(ssc);
out:
return retval;
return 0;
}
static int __devexit ssc_remove(struct platform_device *pdev)
@ -142,10 +128,7 @@ static int __devexit ssc_remove(struct platform_device *pdev)
struct ssc_device *ssc = platform_get_drvdata(pdev);
spin_lock(&user_lock);
iounmap(ssc->regs);
clk_put(ssc->clk);
list_del(&ssc->list);
kfree(ssc);
spin_unlock(&user_lock);
return 0;