Re: [PATCHv2] phy: omap-usb2: Enable runtime PM of omap-usb2 phy properly

Kishon Vijay Abraham I
2014-11-03T11:21:52Z

Hi Greg,

On Tuesday 07 October 2014 04:32 PM, Oussama Ghorbel wrote:
> 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.

This is the only fix for this -rc cycle in the PHY susbsystem. So can you take
this directly? Or else I can prepare a pull request. Let me know.

Acked-by: Kishon Vijay Abraham I <kishon@ti.com>

Thanks
Kishon
>
> Signed-off-by: Oussama Ghorbel <ghorbel@pivasoftware.com>
> ---
> drivers/phy/phy-omap-usb2.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/phy/phy-omap-usb2.c b/drivers/phy/phy-omap-usb2.c
> index 93d7835..acc13f8 100644
> --- a/drivers/phy/phy-omap-usb2.c
> +++ b/drivers/phy/phy-omap-usb2.c
> @@ -262,14 +262,16 @@ 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)) {
>