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Subject[PATCH] usb: host: tegra: code clean up
Date
As part of code clean up, used devm counterparts for the APIs
possible.

Signed-off-by: Venu Byravarasu <vbyravarasu@nvidia.com>
---
drivers/usb/host/ehci-tegra.c | 46 ++++++++++++++--------------------------
1 files changed, 16 insertions(+), 30 deletions(-)

diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
index c0d4732..532db04 100644
--- a/drivers/usb/host/ehci-tegra.c
+++ b/drivers/usb/host/ehci-tegra.c
@@ -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;
@@ -701,8 +701,8 @@ static int tegra_ehci_probe(struct platform_device *pdev)
break;
default:
err = -ENODEV;
- dev_err(&pdev->dev, "unknown usb instance\n");
- goto fail_phy;
+ dev_err(&pdev->dev, "unknown usb inst:%d\n", instance);
+ 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;
}

usb_phy_init(&tegra->phy->u_phy);
@@ -735,7 +735,8 @@ 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);
}
@@ -743,7 +744,7 @@ static int tegra_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");
+ dev_err(&pdev->dev, "usb_add_hcd failed with err 0x%x\n", err);
goto fail;
}

@@ -752,32 +753,23 @@ static int tegra_ehci_probe(struct platform_device *pdev)

/* Don't skip the pm_runtime_forbid call if wakeup isn't working */
/* if (!pdata->power_down_on_bus_suspend) */
- pm_runtime_forbid(&pdev->dev);
+ pm_runtime_forbid(&pdev->dev);
pm_runtime_enable(&pdev->dev);
pm_runtime_put_sync(&pdev->dev);
return err;

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
usb_phy_shutdown(&tegra->phy->u_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;
}

@@ -794,26 +786,20 @@ 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_phy_shutdown(&tegra->phy->u_phy);
- iounmap(hcd->regs);

usb_put_hcd(hcd);

clk_disable_unprepare(tegra->clk);
- clk_put(tegra->clk);

clk_disable_unprepare(tegra->emc_clk);
- clk_put(tegra->emc_clk);

- kfree(tegra);
return 0;
}

--
1.7.1.1


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