phy: omap-usb2: Enable runtime PM of omap-usb2 phy properly

The USB OTG port does not work since v3.16 on omap platform.
This is a regression introduced by the commit
eb82a3d846fa (phy: omap-usb2: Balance pm_runtime_enable() on probe failure
 and remove).
This because the call to pm_runtime_enable() function is moved after the
call to devm_phy_create() function, which has side effect since later in
the subsequent calls of devm_phy_create() there is a check with
pm_runtime_enabled() to configure few things.

Fixes: eb82a3d846fa
Signed-off-by: Oussama Ghorbel <ghorbel@pivasoftware.com>
Tested-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/phy/phy-omap-usb2.c b/drivers/phy/phy-omap-usb2.c
index 8c84298..f091576 100644 (file)
--- a/drivers/phy/phy-omap-usb2.c
+++ b/drivers/phy/phy-omap-usb2.c
@@ -258,14 +258,16 @@ static int omap_usb2_probe(struct platform_device *pdev)
        otg->phy                = &phy->phy;
 
        platform_set_drvdata(pdev, phy);
+       pm_runtime_enable(phy->dev);
 
        generic_phy = devm_phy_create(phy->dev, NULL, &ops, NULL);
-       if (IS_ERR(generic_phy))
+       if (IS_ERR(generic_phy)) {
+               pm_runtime_disable(phy->dev);
                return PTR_ERR(generic_phy);
+       }
 
        phy_set_drvdata(generic_phy, phy);
 
-       pm_runtime_enable(phy->dev);
        phy_provider = devm_of_phy_provider_register(phy->dev,
                        of_phy_simple_xlate);
        if (IS_ERR(phy_provider)) {