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authorVivek Gautam <gautam.vivek@samsung.com>2014-05-10 17:30:07 +0530
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-05-27 14:52:29 -0700
commit40a5ec988c3403106f5fb68ca3a328beff3c11bf (patch)
treebc77d403c74bcf75ce8fbd5ea530f031cec7f1c9 /drivers/usb/host
parent70843f623b58f9ab630e97400cb7d4f610b11c9b (diff)
usb: host: ehci-mv: 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-mv.c16
1 files changed, 6 insertions, 10 deletions
diff --git a/drivers/usb/host/ehci-mv.c b/drivers/usb/host/ehci-mv.c
index bd61612a7251..08147c35f836 100644
--- a/drivers/usb/host/ehci-mv.c
+++ b/drivers/usb/host/ehci-mv.c
@@ -176,11 +176,9 @@ static int mv_ehci_probe(struct platform_device *pdev)
goto err_put_hcd;
}
- ehci_mv->phy_regs = devm_ioremap(&pdev->dev, r->start,
- resource_size(r));
- if (!ehci_mv->phy_regs) {
- dev_err(&pdev->dev, "failed to map phy I/O memory\n");
- retval = -EFAULT;
+ ehci_mv->phy_regs = devm_ioremap_resource(&pdev->dev, r);
+ if (IS_ERR(ehci_mv->phy_regs)) {
+ retval = PTR_ERR(ehci_mv->phy_regs);
goto err_put_hcd;
}
@@ -191,11 +189,9 @@ static int mv_ehci_probe(struct platform_device *pdev)
goto err_put_hcd;
}
- ehci_mv->cap_regs = devm_ioremap(&pdev->dev, r->start,
- resource_size(r));
- if (ehci_mv->cap_regs == NULL) {
- dev_err(&pdev->dev, "failed to map I/O memory\n");
- retval = -EFAULT;
+ ehci_mv->cap_regs = devm_ioremap_resource(&pdev->dev, r);
+ if (IS_ERR(ehci_mv->cap_regs)) {
+ retval = PTR_ERR(ehci_mv->cap_regs);
goto err_put_hcd;
}