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USB: ehci-s5p: use devm_ functions

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The devm_ functions allocate memory that is released when a driver
detaches. This makes the code smaller and a bit simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jingoo Han 2012-06-28 16:29:46 +09:00 committed by Greg Kroah-Hartman
parent 390a0a7806
commit 9cb0756372
1 changed files with 6 additions and 13 deletions
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19
drivers/usb/host/ehci-s5p.c
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@ -79,7 +79,8 @@ static int __devinit s5p_ehci_probe(struct platform_device *pdev)
return -EINVAL;
}
s5p_ehci = kzalloc(sizeof(struct s5p_ehci_hcd), GFP_KERNEL);
s5p_ehci = devm_kzalloc(&pdev->dev, sizeof(struct s5p_ehci_hcd),
GFP_KERNEL);
if (!s5p_ehci)
return -ENOMEM;
@ -89,8 +90,7 @@ static int __devinit s5p_ehci_probe(struct platform_device *pdev)
dev_name(&pdev->dev));
if (!hcd) {
dev_err(&pdev->dev, "Unable to create HCD\n");
err = -ENOMEM;
goto fail_hcd;
return -ENOMEM;
}
s5p_ehci->hcd = hcd;
@ -115,7 +115,7 @@ static int __devinit s5p_ehci_probe(struct platform_device *pdev)
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
hcd->regs = ioremap(res->start, resource_size(res));
hcd->regs = devm_ioremap(&pdev->dev, res->start, hcd->rsrc_len);
if (!hcd->regs) {
dev_err(&pdev->dev, "Failed to remap I/O memory\n");
err = -ENOMEM;
@ -126,7 +126,7 @@ static int __devinit s5p_ehci_probe(struct platform_device *pdev)
if (!irq) {
dev_err(&pdev->dev, "Failed to get IRQ\n");
err = -ENODEV;
goto fail;
goto fail_io;
}
if (pdata->phy_init)
@ -151,23 +151,19 @@ static int __devinit s5p_ehci_probe(struct platform_device *pdev)
err = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (err) {
dev_err(&pdev->dev, "Failed to add USB HCD\n");
goto fail;
goto fail_io;
}
platform_set_drvdata(pdev, s5p_ehci);
return 0;
fail:
iounmap(hcd->regs);
fail_io:
clk_disable(s5p_ehci->clk);
fail_clken:
clk_put(s5p_ehci->clk);
fail_clk:
usb_put_hcd(hcd);
fail_hcd:
kfree(s5p_ehci);
return err;
}
@ -182,13 +178,10 @@ static int __devexit s5p_ehci_remove(struct platform_device *pdev)
if (pdata && pdata->phy_exit)
pdata->phy_exit(pdev, S5P_USB_PHY_HOST);
iounmap(hcd->regs);
clk_disable(s5p_ehci->clk);
clk_put(s5p_ehci->clk);
usb_put_hcd(hcd);
kfree(s5p_ehci);
return 0;
}