As devm_ioremap_resource() checks for valid resource,
make use of it instead of testing ourselves. As a bonus
memory region is requested.
Signed-off-by: Ladislav Michl <ladis@xxxxxxxxxxxxxx>
---
Changes:
- v2: Drop uneeded error message
drivers/usb/gadget/udc/atmel_usba_udc.c | 34 +++++++++++++--------------------
1 file changed, 13 insertions(+), 21 deletions(-)
diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c
index 075eaaa8a408..f420710abdd7 100644
--- a/drivers/usb/gadget/udc/atmel_usba_udc.c
+++ b/drivers/usb/gadget/udc/atmel_usba_udc.c
@@ -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 */
--
2.15.1
--
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