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drivers/usb/host/ehci-tegra.c: use devm_ functions

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The various devm_ functions allocate memory that is released when a driver
detaches.  This patch uses these functions for data that is allocated in
the probe function of a platform device and is only freed in the remove
function.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Tested-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Julia Lawall 2012-07-30 16:43:41 +02:00 committed by Greg Kroah-Hartman
parent a926e298b6
commit bc2ff98ffa
1 changed files with 13 additions and 27 deletions
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40
drivers/usb/host/ehci-tegra.c
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@ -634,7 +634,8 @@ static int tegra_ehci_probe(struct platform_device *pdev)
setup_vbus_gpio(pdev, pdata);
tegra = kzalloc(sizeof(struct tegra_ehci_hcd), GFP_KERNEL);
tegra = devm_kzalloc(&pdev->dev, sizeof(struct tegra_ehci_hcd),
GFP_KERNEL);
if (!tegra)
return -ENOMEM;
@ -642,13 +643,12 @@ static int tegra_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;
}
platform_set_drvdata(pdev, tegra);
tegra->clk = clk_get(&pdev->dev, NULL);
tegra->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(tegra->clk)) {
dev_err(&pdev->dev, "Can't get ehci clock\n");
err = PTR_ERR(tegra->clk);
@ -657,9 +657,9 @@ static int tegra_ehci_probe(struct platform_device *pdev)
err = clk_prepare_enable(tegra->clk);
if (err)
goto fail_clken;
goto fail_clk;
tegra->emc_clk = clk_get(&pdev->dev, "emc");
tegra->emc_clk = devm_clk_get(&pdev->dev, "emc");
if (IS_ERR(tegra->emc_clk)) {
dev_err(&pdev->dev, "Can't get emc clock\n");
err = PTR_ERR(tegra->emc_clk);
@ -677,7 +677,7 @@ static int tegra_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, resource_size(res));
if (!hcd->regs) {
dev_err(&pdev->dev, "Failed to remap I/O memory\n");
err = -ENOMEM;
@ -702,7 +702,7 @@ static int tegra_ehci_probe(struct platform_device *pdev)
default:
err = -ENODEV;
dev_err(&pdev->dev, "unknown usb instance\n");
goto fail_phy;
goto fail_io;
}
}
@ -712,7 +712,7 @@ static int tegra_ehci_probe(struct platform_device *pdev)
if (IS_ERR(tegra->phy)) {
dev_err(&pdev->dev, "Failed to open USB phy\n");
err = -ENXIO;
goto fail_phy;
goto fail_io;
}
err = tegra_usb_phy_power_on(tegra->phy);
@ -733,7 +733,8 @@ static int tegra_ehci_probe(struct platform_device *pdev)
#ifdef CONFIG_USB_OTG_UTILS
if (pdata->operating_mode == TEGRA_USB_OTG) {
tegra->transceiver = usb_get_phy(USB_PHY_TYPE_USB2);
tegra->transceiver =
devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2);
if (!IS_ERR_OR_NULL(tegra->transceiver))
otg_set_host(tegra->transceiver->otg, &hcd->self);
}
@ -757,25 +758,16 @@ static int tegra_ehci_probe(struct platform_device *pdev)
fail:
#ifdef CONFIG_USB_OTG_UTILS
if (!IS_ERR_OR_NULL(tegra->transceiver)) {
if (!IS_ERR_OR_NULL(tegra->transceiver))
otg_set_host(tegra->transceiver->otg, NULL);
usb_put_phy(tegra->transceiver);
}
#endif
tegra_usb_phy_close(tegra->phy);
fail_phy:
iounmap(hcd->regs);
fail_io:
clk_disable_unprepare(tegra->emc_clk);
clk_put(tegra->emc_clk);
fail_emc_clk:
clk_disable_unprepare(tegra->clk);
fail_clken:
clk_put(tegra->clk);
fail_clk:
usb_put_hcd(hcd);
fail_hcd:
kfree(tegra);
return err;
}
@ -792,25 +784,19 @@ static int tegra_ehci_remove(struct platform_device *pdev)
pm_runtime_put_noidle(&pdev->dev);
#ifdef CONFIG_USB_OTG_UTILS
if (!IS_ERR_OR_NULL(tegra->transceiver)) {
if (!IS_ERR_OR_NULL(tegra->transceiver))
otg_set_host(tegra->transceiver->otg, NULL);
usb_put_phy(tegra->transceiver);
}
#endif
usb_remove_hcd(hcd);
usb_put_hcd(hcd);
tegra_usb_phy_close(tegra->phy);
iounmap(hcd->regs);
clk_disable_unprepare(tegra->clk);
clk_put(tegra->clk);
clk_disable_unprepare(tegra->emc_clk);
clk_put(tegra->emc_clk);
kfree(tegra);
return 0;
}