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authorVivek Gautam <gautam.vivek@samsung.com>2014-05-10 17:30:09 +0530
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-05-27 14:52:29 -0700
commit6ba96dcebf3b4c4a8befaa37dca0c590b0deceac (patch)
treeed0ef6e545c6ae379c0824774c56b7024ea313bd /drivers/usb/host
parente0f77a91ee30ed785c107ed48fb2171d063df42b (diff)
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>
Diffstat (limited to 'drivers/usb/host')
-rw-r--r--drivers/usb/host/ehci-tegra.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
index 572634cd95d..6fdcb8ad229 100644
--- a/drivers/usb/host/ehci-tegra.c
+++ b/drivers/usb/host/ehci-tegra.c
@@ -411,10 +411,9 @@ static int tegra_ehci_probe(struct platform_device *pdev)
}
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
- hcd->regs = devm_ioremap(&pdev->dev, res->start, resource_size(res));
- if (!hcd->regs) {
- dev_err(&pdev->dev, "Failed to remap I/O memory\n");
- err = -ENOMEM;
+ hcd->regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(hcd->regs)) {
+ err = PTR_ERR(hcd->regs);
goto cleanup_clk_en;
}
ehci->caps = hcd->regs + 0x100;