drivers/usb/host/ehci-tegra.c: use devm_ functions
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>
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
index 950e95e..ba5039f 100644
--- a/drivers/usb/host/ehci-tegra.c
+++ b/drivers/usb/host/ehci-tegra.c
@@ -634,7 +634,8 @@
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 @@
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 @@
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 @@
}
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 @@
default:
err = -ENODEV;
dev_err(&pdev->dev, "unknown usb instance\n");
- goto fail_phy;
+ goto fail_io;
}
}
@@ -712,7 +712,7 @@
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 @@
#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 @@
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 @@
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;
}