From: Vivek Gautam Date: Sat, 10 May 2014 12:00:08 +0000 (+0530) Subject: usb: host: ehci-spear: Use devm_ioremap_resource instead of devm_ioremap X-Git-Tag: MMI-PSA29.97-13-9~11772^2~37^2~152 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e0f77a91ee30ed785c107ed48fb2171d063df42b;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git usb: host: ehci-spear: Use devm_ioremap_resource instead of devm_ioremap Using devm_ioremap_resource() API should actually be preferred over devm_ioremap(), since the former request the mem region first and then gives back the ioremap'ed memory pointer. devm_ioremap_resource() calls request_mem_region(), therby preventing other drivers to make any overlapping call to the same region. Signed-off-by: Vivek Gautam Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/host/ehci-spear.c b/drivers/usb/host/ehci-spear.c index 8bd915b2ae8c..1d59958ad0ce 100644 --- a/drivers/usb/host/ehci-spear.c +++ b/drivers/usb/host/ehci-spear.c @@ -106,16 +106,9 @@ static int spear_ehci_hcd_drv_probe(struct platform_device *pdev) hcd->rsrc_start = res->start; hcd->rsrc_len = resource_size(res); - if (!devm_request_mem_region(&pdev->dev, hcd->rsrc_start, hcd->rsrc_len, - driver->description)) { - retval = -EBUSY; - goto err_put_hcd; - } - - hcd->regs = devm_ioremap(&pdev->dev, hcd->rsrc_start, hcd->rsrc_len); - if (hcd->regs == NULL) { - dev_dbg(&pdev->dev, "error mapping memory\n"); - retval = -ENOMEM; + hcd->regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(hcd->regs)) { + retval = PTR_ERR(hcd->regs); goto err_put_hcd; }