The cleanup path checks whether the transceiver was properly initialized
using IS_ERR(). However it can also happen that the cleanup path is run
before the transceiver was initialized (or the operating mode isn't set
to TEGRA_USB_OTG) and is therefore NULL. Add a separate label for error
unwinding and initialize the transceiver field to ERR_PTR(-ENODEV) when
the operating mode isn't TEGRA_USB_OTG to allow for consistent checking.
Signed-off-by: Thierry Reding <thierry@xxxxxxxx>
---
drivers/usb/host/ehci-tegra.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
index 1d2488c..c8cb488 100644
--- a/drivers/usb/host/ehci-tegra.c
+++ b/drivers/usb/host/ehci-tegra.c
@@ -755,7 +755,7 @@ static int tegra_ehci_probe(struct platform_device *pdev)
err = usb_phy_set_suspend(hcd->phy, 0);
if (err) {
dev_err(&pdev->dev, "Failed to power on the phy\n");
- goto fail;
+ goto fail_phy;
}
tegra->host_resumed = 1;
@@ -765,7 +765,7 @@ static int tegra_ehci_probe(struct platform_device *pdev)
if (!irq) {
dev_err(&pdev->dev, "Failed to get IRQ\n");
err = -ENODEV;
- goto fail;
+ goto fail_phy;
}
if (pdata->operating_mode == TEGRA_USB_OTG) {
@@ -773,6 +773,8 @@ static int tegra_ehci_probe(struct platform_device *pdev)
devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2);
if (!IS_ERR(tegra->transceiver))
otg_set_host(tegra->transceiver->otg, &hcd->self);
+ } else {
+ tegra->transceiver = ERR_PTR(-ENODEV);
}
err = usb_add_hcd(hcd, irq, IRQF_SHARED);
@@ -794,6 +796,7 @@ static int tegra_ehci_probe(struct platform_device *pdev)
fail:
if (!IS_ERR(tegra->transceiver))
otg_set_host(tegra->transceiver->otg, NULL);
+fail_phy:
usb_phy_shutdown(hcd->phy);
fail_io:
clk_disable_unprepare(tegra->clk);
--
1.8.2
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