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usb: dwc3: exynos: use devm_ functions

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The devm_ functions allocate memory that is released when a driver
detaches. This makes the code smaller and a bit simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Jingoo Han 2012-11-13 11:20:49 +09:00 committed by Felipe Balbi
parent 5da9347825
commit 20b97dc183
1 changed files with 26 additions and 31 deletions
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57
drivers/usb/dwc3/dwc3-exynos.c
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@ -95,13 +95,14 @@ static int dwc3_exynos_probe(struct platform_device *pdev)
struct platform_device *dwc3;
struct dwc3_exynos *exynos;
struct clk *clk;
struct device *dev = &pdev->dev;
int ret = -ENOMEM;
exynos = kzalloc(sizeof(*exynos), GFP_KERNEL);
exynos = devm_kzalloc(dev, sizeof(*exynos), GFP_KERNEL);
if (!exynos) {
dev_err(&pdev->dev, "not enough memory\n");
goto err0;
dev_err(dev, "not enough memory\n");
return -ENOMEM;
}
/*
@ -116,30 +117,30 @@ static int dwc3_exynos_probe(struct platform_device *pdev)
ret = dwc3_exynos_register_phys(exynos);
if (ret) {
dev_err(&pdev->dev, "couldn't register PHYs\n");
goto err1;
dev_err(dev, "couldn't register PHYs\n");
return ret;
}
dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);
if (!dwc3) {
dev_err(&pdev->dev, "couldn't allocate dwc3 device\n");
dev_err(dev, "couldn't allocate dwc3 device\n");
return -ENOMEM;
}
clk = devm_clk_get(dev, "usbdrd30");
if (IS_ERR(clk)) {
dev_err(dev, "couldn't get clock\n");
ret = -EINVAL;
goto err1;
}
clk = clk_get(&pdev->dev, "usbdrd30");
if (IS_ERR(clk)) {
dev_err(&pdev->dev, "couldn't get clock\n");
ret = -EINVAL;
goto err3;
}
dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask);
dma_set_coherent_mask(&dwc3->dev, pdev->dev.coherent_dma_mask);
dwc3->dev.parent = &pdev->dev;
dwc3->dev.dma_mask = pdev->dev.dma_mask;
dwc3->dev.dma_parms = pdev->dev.dma_parms;
dwc3->dev.parent = dev;
dwc3->dev.dma_mask = dev->dma_mask;
dwc3->dev.dma_parms = dev->dma_parms;
exynos->dwc3 = dwc3;
exynos->dev = &pdev->dev;
exynos->dev = dev;
exynos->clk = clk;
clk_enable(exynos->clk);
@ -147,26 +148,23 @@ static int dwc3_exynos_probe(struct platform_device *pdev)
ret = platform_device_add_resources(dwc3, pdev->resource,
pdev->num_resources);
if (ret) {
dev_err(&pdev->dev, "couldn't add resources to dwc3 device\n");
goto err4;
dev_err(dev, "couldn't add resources to dwc3 device\n");
goto err2;
}
ret = platform_device_add(dwc3);
if (ret) {
dev_err(&pdev->dev, "failed to register dwc3 device\n");
goto err4;
dev_err(dev, "failed to register dwc3 device\n");
goto err2;
}
return 0;
err4:
err2:
clk_disable(clk);
clk_put(clk);
err3:
platform_device_put(dwc3);
err1:
kfree(exynos);
err0:
platform_device_put(dwc3);
return ret;
}
@ -179,9 +177,6 @@ static int dwc3_exynos_remove(struct platform_device *pdev)
platform_device_unregister(exynos->usb3_phy);
clk_disable(exynos->clk);
clk_put(exynos->clk);
kfree(exynos);
return 0;
}