[v4,04/10] usb: ehci-orion: add S2RAM support

[Miquel Raynal <miquel.raynal@bootlin.com>]

Hi Alan,

Alan Stern <stern@rowland.harvard.edu> wrote on Fri, 25 Jan 2019
21:56:27 -0500 (EST):

> On Fri, 25 Jan 2019, Miquel Raynal wrote:
> 
> > Add suspend/resume callbacks to reset the host controller properly
> > during S2RAM operation.
> > 
> > Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
> > ---
> >  drivers/usb/host/ehci-orion.c | 18 ++++++++++++++++++
> >  1 file changed, 18 insertions(+)
> > 
> > diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c
> > index 3109f082949e..0dab099b5d15 100644
> > --- a/drivers/usb/host/ehci-orion.c
> > +++ b/drivers/usb/host/ehci-orion.c
> > @@ -182,6 +182,23 @@ static int ehci_orion_drv_reset(struct usb_hcd *hcd)
> >  	return ret;
> >  }
> >  
> > +static int __maybe_unused ehci_orion_drv_suspend(struct device *dev)
> > +{
> > +	struct usb_hcd *hcd = dev_get_drvdata(dev);
> > +
> > +	return ehci_suspend(hcd, device_may_wakeup(dev));  
> 
> Okay, good.
> 
> > +}
> > +
> > +static int __maybe_unused ehci_orion_drv_resume(struct device *dev)
> > +{
> > +	struct usb_hcd *hcd = dev_get_drvdata(dev);
> > +
> > +	return ehci_resume(hcd, device_may_wakeup(dev));  
> 
> Not so good.  The second argument here is force_reset; presumably you 
> want it always to be false.  (Note that the v3 version of this patch 
> did not call device_may_wakeup() in ehci_orion_drv_resume.)
> 
> Yes, the API is not symmetrical.  So sue me...

Oh right, I completely overlooked that one. Indeed the second parameter
should be "false", as in the v3. Do you mind if I send a v5 only for
this patch? If the rest looks good to you of course.


Thanks,
Miquèl