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spi: nuc900: Use devm_*() functions

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Use devm_*() functions to make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Wan ZongShun <mcuos.com@gmail.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Jingoo Han 2013-12-09 19:18:18 +09:00 committed by Mark Brown
parent 6ce4eac1f6
commit 7519459da2
1 changed files with 10 additions and 40 deletions
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50
drivers/spi/spi-nuc900.c
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@ -57,7 +57,6 @@ struct nuc900_spi {
const unsigned char *tx;
unsigned char *rx;
struct clk *clk;
struct resource *ioarea;
struct spi_master *master;
struct spi_device *curdev;
struct device *dev;
@ -344,8 +343,7 @@ static int nuc900_spi_probe(struct platform_device *pdev)
master = spi_alloc_master(&pdev->dev, sizeof(struct nuc900_spi));
if (master == NULL) {
dev_err(&pdev->dev, "No memory for spi_master\n");
err = -ENOMEM;
goto err_nomem;
return -ENOMEM;
}
hw = spi_master_get_devdata(master);
@ -376,40 +374,31 @@ static int nuc900_spi_probe(struct platform_device *pdev)
goto err_pdata;
}
hw->ioarea = request_mem_region(hw->res->start,
resource_size(hw->res), pdev->name);
if (hw->ioarea == NULL) {
dev_err(&pdev->dev, "Cannot reserve region\n");
err = -ENXIO;
hw->regs = devm_ioremap_resource(&pdev->dev, hw->res);
if (IS_ERR(hw->regs)) {
err = PTR_ERR(hw->regs);
goto err_pdata;
}
hw->regs = ioremap(hw->res->start, resource_size(hw->res));
if (hw->regs == NULL) {
dev_err(&pdev->dev, "Cannot map IO\n");
err = -ENXIO;
goto err_iomap;
}
hw->irq = platform_get_irq(pdev, 0);
if (hw->irq < 0) {
dev_err(&pdev->dev, "No IRQ specified\n");
err = -ENOENT;
goto err_irq;
goto err_pdata;
}
err = request_irq(hw->irq, nuc900_spi_irq, 0, pdev->name, hw);
err = devm_request_irq(&pdev->dev, hw->irq, nuc900_spi_irq, 0,
pdev->name, hw);
if (err) {
dev_err(&pdev->dev, "Cannot claim IRQ\n");
goto err_irq;
goto err_pdata;
}
hw->clk = clk_get(&pdev->dev, "spi");
hw->clk = devm_clk_get(&pdev->dev, "spi");
if (IS_ERR(hw->clk)) {
dev_err(&pdev->dev, "No clock for device\n");
err = PTR_ERR(hw->clk);
goto err_clk;
goto err_pdata;
}
mfp_set_groupg(&pdev->dev, NULL);
@ -425,17 +414,8 @@ static int nuc900_spi_probe(struct platform_device *pdev)
err_register:
clk_disable(hw->clk);
clk_put(hw->clk);
err_clk:
free_irq(hw->irq, hw);
err_irq:
iounmap(hw->regs);
err_iomap:
release_mem_region(hw->res->start, resource_size(hw->res));
kfree(hw->ioarea);
err_pdata:
spi_master_put(hw->master);
err_nomem:
return err;
}
@ -443,18 +423,8 @@ static int nuc900_spi_remove(struct platform_device *dev)
{
struct nuc900_spi *hw = platform_get_drvdata(dev);
free_irq(hw->irq, hw);
spi_bitbang_stop(&hw->bitbang);
clk_disable(hw->clk);
clk_put(hw->clk);
iounmap(hw->regs);
release_mem_region(hw->res->start, resource_size(hw->res));
kfree(hw->ioarea);
spi_master_put(hw->master);
return 0;
}