linux-kernel - Re: [REPOST PATCH 3/3] USB: dwc2: Don't turn off the usbphy in suspend if wakeup is enabled

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Message-ID: <CAD=FV=XRY003C6ai4DFkcTogsW+g1AO955J_A4tB2tzu0PZy1Q@mail.gmail.com>
Date:	Mon, 6 Jul 2015 12:32:56 -0700
From:	Doug Anderson <dianders@...omium.org>
To:	Felipe Balbi <balbi@...com>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	John Youn <johnyoun@...opsys.com>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	Chris Zhong <zyw@...k-chips.com>,
	Heiko Stuebner <heiko@...ech.de>,
	Julius Werner <jwerner@...omium.org>,
	Andrew Bresticker <abrestic@...omium.org>,
	Alexandru Stan <amstan@...omium.org>, lyz <lyz@...k-chips.com>,
	"open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [REPOST PATCH 3/3] USB: dwc2: Don't turn off the usbphy in
 suspend if wakeup is enabled

Felipe,

On Mon, Jul 6, 2015 at 11:34 AM, Felipe Balbi <balbi@...com> wrote:
> Hi,
>
> On Mon, Jul 06, 2015 at 11:27:04AM -0700, Douglas Anderson wrote:
>> @@ -282,6 +296,28 @@ static int dwc2_driver_probe(struct platform_device *dev)
>>       return retval;
>>  }
>>
>> +static bool __maybe_unused dwc2_can_poweroff_phy(struct dwc2_hsotg *dwc2)
>> +{
>> +     struct usb_device *root_hub = dwc2_hsotg_to_hcd(dwc2)->self.root_hub;
>
> what happens on peripheral only builds ?

The function is only called on if "dwc2_is_device_mode(dwc2)" returns
false.  I think that means we're safe, right?

-Doug
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