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usb: gadget: atmel_usba: Use devm_*() functions

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

Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Jingoo Han 2013-12-16 15:13:31 +09:00 • committed by Felipe Balbi
parent 45ab460975
commit 40a8fb2a67
1 changed files with 17 additions and 47 deletions
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64
drivers/usb/gadget/atmel_usba_udc.c
View file

@ -1996,14 +1996,12 @@ static int __init usba_udc_probe(struct platform_device *pdev)
if (irq < 0)
return irq;
pclk = clk_get(&pdev->dev, "pclk");
pclk = devm_clk_get(&pdev->dev, "pclk");
if (IS_ERR(pclk))
return PTR_ERR(pclk);
hclk = clk_get(&pdev->dev, "hclk");
if (IS_ERR(hclk)) {
ret = PTR_ERR(hclk);
goto err_get_hclk;
}
hclk = devm_clk_get(&pdev->dev, "hclk");
if (IS_ERR(hclk))
return PTR_ERR(hclk);
spin_lock_init(&udc->lock);
udc->pdev = pdev;
@ -2012,17 +2010,17 @@ static int __init usba_udc_probe(struct platform_device *pdev)
udc->vbus_pin = -ENODEV;
ret = -ENOMEM;
udc->regs = ioremap(regs->start, resource_size(regs));
udc->regs = devm_ioremap(&pdev->dev, regs->start, resource_size(regs));
if (!udc->regs) {
dev_err(&pdev->dev, "Unable to map I/O memory, aborting.\n");
goto err_map_regs;
return ret;
}
dev_info(&pdev->dev, "MMIO registers at 0x%08lx mapped at %p\n",
(unsigned long)regs->start, udc->regs);
udc->fifo = ioremap(fifo->start, resource_size(fifo));
udc->fifo = devm_ioremap(&pdev->dev, fifo->start, resource_size(fifo));
if (!udc->fifo) {
dev_err(&pdev->dev, "Unable to map FIFO, aborting.\n");
goto err_map_fifo;
return ret;
}
dev_info(&pdev->dev, "FIFO at 0x%08lx mapped at %p\n",
(unsigned long)fifo->start, udc->fifo);
@ -2033,7 +2031,7 @@ static int __init usba_udc_probe(struct platform_device *pdev)
ret = clk_prepare_enable(pclk);
if (ret) {
dev_err(&pdev->dev, "Unable to enable pclk, aborting.\n");
goto err_clk_enable;
return ret;
}
toggle_bias(0);
usba_writel(udc, CTRL, USBA_DISABLE_MASK);
@ -2044,22 +2042,22 @@ static int __init usba_udc_probe(struct platform_device *pdev)
else
udc->usba_ep = usba_udc_pdata(pdev, udc);
if (IS_ERR(udc->usba_ep)) {
ret = PTR_ERR(udc->usba_ep);
goto err_alloc_ep;
}
if (IS_ERR(udc->usba_ep))
return PTR_ERR(udc->usba_ep);
ret = request_irq(irq, usba_udc_irq, 0, "atmel_usba_udc", udc);
ret = devm_request_irq(&pdev->dev, irq, usba_udc_irq, 0,
"atmel_usba_udc", udc);
if (ret) {
dev_err(&pdev->dev, "Cannot request irq %d (error %d)\n",
irq, ret);
goto err_request_irq;
return ret;
}
udc->irq = irq;
if (gpio_is_valid(udc->vbus_pin)) {
if (!devm_gpio_request(&pdev->dev, udc->vbus_pin, "atmel_usba_udc")) {
ret = request_irq(gpio_to_irq(udc->vbus_pin),
ret = devm_request_irq(&pdev->dev,
gpio_to_irq(udc->vbus_pin),
usba_vbus_irq, 0,
"atmel_usba_udc", udc);
if (ret) {
@ -2078,31 +2076,13 @@ static int __init usba_udc_probe(struct platform_device *pdev)
ret = usb_add_gadget_udc(&pdev->dev, &udc->gadget);
if (ret)
goto err_add_udc;
return ret;
usba_init_debugfs(udc);
for (i = 1; i < udc->num_ep; i++)
usba_ep_init_debugfs(udc, &udc->usba_ep[i]);
return 0;
err_add_udc:
if (gpio_is_valid(udc->vbus_pin))
free_irq(gpio_to_irq(udc->vbus_pin), udc);
free_irq(irq, udc);
err_request_irq:
err_alloc_ep:
err_clk_enable:
iounmap(udc->fifo);
err_map_fifo:
iounmap(udc->regs);
err_map_regs:
clk_put(hclk);
err_get_hclk:
clk_put(pclk);
return ret;
}
static int __exit usba_udc_remove(struct platform_device *pdev)
@ -2118,16 +2098,6 @@ static int __exit usba_udc_remove(struct platform_device *pdev)
usba_ep_cleanup_debugfs(&udc->usba_ep[i]);
usba_cleanup_debugfs(udc);
if (gpio_is_valid(udc->vbus_pin)) {
free_irq(gpio_to_irq(udc->vbus_pin), udc);
}
free_irq(udc->irq, udc);
iounmap(udc->fifo);
iounmap(udc->regs);
clk_put(udc->hclk);
clk_put(udc->pclk);
return 0;
}