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usb: gadget: udc: atmel: Use devm_ioremap_resource()

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As devm_ioremap_resource() checks for valid resource,
make use of it instead of testing ourselves. As a bonus
memory region is requested.

Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Ladislav Michl 2018-01-22 17:05:21 +01:00 committed by Felipe Balbi
parent a127f4f228
commit 13431c6070
1 changed files with 13 additions and 21 deletions
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34
drivers/usb/gadget/udc/atmel_usba_udc.c
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@ -2272,7 +2272,7 @@ static struct usba_ep * usba_udc_pdata(struct platform_device *pdev,
static int usba_udc_probe(struct platform_device *pdev)
{
struct resource *regs, *fifo;
struct resource *res;
struct clk *pclk, *hclk;
struct usba_udc *udc;
int irq, ret, i;
@ -2284,10 +2284,18 @@ static int usba_udc_probe(struct platform_device *pdev)
udc->gadget = usba_gadget_template;
INIT_LIST_HEAD(&udc->gadget.ep_list);
regs = platform_get_resource(pdev, IORESOURCE_MEM, CTRL_IOMEM_ID);
fifo = platform_get_resource(pdev, IORESOURCE_MEM, FIFO_IOMEM_ID);
if (!regs || !fifo)
return -ENXIO;
res = platform_get_resource(pdev, IORESOURCE_MEM, CTRL_IOMEM_ID);
udc->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(udc->regs))
return PTR_ERR(udc->regs);
dev_info(&pdev->dev, "MMIO registers at %pR mapped at %p\n",
res, udc->regs);
res = platform_get_resource(pdev, IORESOURCE_MEM, FIFO_IOMEM_ID);
udc->fifo = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(udc->fifo))
return PTR_ERR(udc->fifo);
dev_info(&pdev->dev, "FIFO at %pR mapped at %p\n", res, udc->fifo);
irq = platform_get_irq(pdev, 0);
if (irq < 0)
@ -2307,22 +2315,6 @@ static int usba_udc_probe(struct platform_device *pdev)
udc->hclk = hclk;
udc->vbus_pin = -ENODEV;
ret = -ENOMEM;
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");
return ret;
}
dev_info(&pdev->dev, "MMIO registers at 0x%08lx mapped at %p\n",
(unsigned long)regs->start, udc->regs);
udc->fifo = devm_ioremap(&pdev->dev, fifo->start, resource_size(fifo));
if (!udc->fifo) {
dev_err(&pdev->dev, "Unable to map FIFO, aborting.\n");
return ret;
}
dev_info(&pdev->dev, "FIFO at 0x%08lx mapped at %p\n",
(unsigned long)fifo->start, udc->fifo);
platform_set_drvdata(pdev, udc);
/* Make sure we start from a clean slate */