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usb: host: ehci-tegra: 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 <gautam.vivek@samsung.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 3 additions and 4 deletions
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@ -411,10 +411,9 @@ static int tegra_ehci_probe(struct platform_device *pdev)
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}
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hcd->rsrc_start = res->start;
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hcd->rsrc_len = resource_size(res);
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hcd->regs = devm_ioremap(&pdev->dev, res->start, resource_size(res));
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if (!hcd->regs) {
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dev_err(&pdev->dev, "Failed to remap I/O memory\n");
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err = -ENOMEM;
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hcd->regs = devm_ioremap_resource(&pdev->dev, res);
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if (IS_ERR(hcd->regs)) {
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err = PTR_ERR(hcd->regs);
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goto cleanup_clk_en;
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}
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ehci->caps = hcd->regs + 0x100;
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