From: Vivek Gautam Date: Sat, 10 May 2014 12:00:06 +0000 (+0530) Subject: usb: host: ehci-msm: Use devm_ioremap_resource instead of devm_ioremap X-Git-Tag: firefly_0821_release~176^2~3465^2~37^2~154 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=70843f623b58;p=firefly-linux-kernel-4.4.55.git usb: host: ehci-msm: 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-msm.c b/drivers/usb/host/ehci-msm.c index f341651d6f6c..982c09bebe0f 100644 --- a/drivers/usb/host/ehci-msm.c +++ b/drivers/usb/host/ehci-msm.c @@ -96,10 +96,9 @@ static int ehci_msm_probe(struct platform_device *pdev) hcd->rsrc_start = res->start; hcd->rsrc_len = resource_size(res); - hcd->regs = devm_ioremap(&pdev->dev, hcd->rsrc_start, hcd->rsrc_len); - if (!hcd->regs) { - dev_err(&pdev->dev, "ioremap failed\n"); - ret = -ENOMEM; + hcd->regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(hcd->regs)) { + ret = PTR_ERR(hcd->regs); goto put_hcd; }