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    Subject[PATCH AUTOSEL 3.18 32/98] usb: host: ehci-tegra: request deferred probe when failing to get phy
    Date
    From: Vince Hsu <vinceh@nvidia.com>

    [ Upstream commit f56e67f0a880a5b795cdb5f62614aafe264c5304 ]

    The commit 1290a958d48e ("usb: phy: propagate __of_usb_find_phy()'s error on
    failure") changed the condition to return -EPROBE_DEFER to host driver.
    Originally the Tegra host driver depended on the returned -EPROBE_DEFER to
    get the phy device later when booting. Now we have to do that explicitly.

    Signed-off-by: Vince Hsu <vinceh@nvidia.com>
    Tested-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/usb/host/ehci-tegra.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
    index aad253559bcd..b4cc4c90b8e3 100644
    --- a/drivers/usb/host/ehci-tegra.c
    +++ b/drivers/usb/host/ehci-tegra.c
    @@ -451,7 +451,7 @@ static int tegra_ehci_probe(struct platform_device *pdev)

    u_phy = devm_usb_get_phy_by_phandle(&pdev->dev, "nvidia,phy", 0);
    if (IS_ERR(u_phy)) {
    - err = PTR_ERR(u_phy);
    + err = -EPROBE_DEFER;
    goto cleanup_clk_en;
    }
    hcd->usb_phy = u_phy;
    --
    2.17.1
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