USB: ohci-ppc-of: Use devm_ioremap_resource()

Use devm_ioremap_resource() to make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/ohci-ppc-of.c b/drivers/usb/host/ohci-ppc-of.c
index 2ee178705f87afd99f125d19e4c26c8c54f2b576..965e3e9e688ad85a713c51b43c2a69276ee0d22b 100644 (file)
--- a/drivers/usb/host/ohci-ppc-of.c
+++ b/drivers/usb/host/ohci-ppc-of.c
@@ -115,10 +115,9 @@ static int ohci_hcd_ppc_of_probe(struct platform_device *op)
        hcd->rsrc_start = res.start;
        hcd->rsrc_len = resource_size(&res);
 
-       if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
-               dev_err(&op->dev, "%s: request_mem_region failed\n",
-                       __FILE__);
-               rv = -EBUSY;
+       hcd->regs = devm_ioremap_resource(&op->dev, &res);
+       if (IS_ERR(hcd->regs)) {
+               rv = PTR_ERR(hcd->regs);
                goto err_rmr;
        }
 
@@ -127,14 +126,7 @@ static int ohci_hcd_ppc_of_probe(struct platform_device *op)
                dev_err(&op->dev, "%s: irq_of_parse_and_map failed\n",
                        __FILE__);
                rv = -EBUSY;
-               goto err_irq;
-       }
-
-       hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
-       if (!hcd->regs) {
-               dev_err(&op->dev, "%s: ioremap failed\n", __FILE__);
-               rv = -ENOMEM;
-               goto err_ioremap;
+               goto err_rmr;
        }
 
        ohci = hcd_to_ohci(hcd);
@@ -178,11 +170,7 @@ static int ohci_hcd_ppc_of_probe(struct platform_device *op)
                        pr_debug("%s: cannot get ehci offset from fdt\n", __FILE__);
        }
 
-       iounmap(hcd->regs);
-err_ioremap:
        irq_dispose_mapping(irq);
-err_irq:
-       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 err_rmr:
        usb_put_hcd(hcd);
 
@@ -197,9 +185,7 @@ static int ohci_hcd_ppc_of_remove(struct platform_device *op)
 
        usb_remove_hcd(hcd);
 
-       iounmap(hcd->regs);
        irq_dispose_mapping(hcd->irq);
-       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 
        usb_put_hcd(hcd);