On Fri, Aug 29, 2014 at 04:25:35PM +0200, Antoine Tenart wrote:
> Hi,
>
> On Tue, Aug 26, 2014 at 06:22:40PM +0800, Peter Chen wrote:
> > On Fri, Aug 22, 2014 at 05:50:19PM +0200, Antoine Ténart wrote:
> >
> > If the common usb_otg and usb_phy struct still has another's pointer, you
> > may not need to add this patch.
>
> Except if we want to access the OTG member when not using an USB PHY.
If there is no USB PHY, the probe at core.c will turn error.
>
> > > diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
> > > index 0b67d78dd953..0952d4adfa4c 100644
> > > --- a/drivers/usb/chipidea/host.c
> > > +++ b/drivers/usb/chipidea/host.c
> > > @@ -85,13 +85,11 @@ static int host_start(struct ci_hdrc *ci)
> > > if (ret) {
> > > goto disable_reg;
> > > } else {
> > > - struct usb_otg *otg = ci->usb_phy->otg;
> > > + struct usb_otg *otg = &ci->otg;
> > >
> > > ci->hcd = hcd;
> > > - if (otg) {
> > > - otg->host = &hcd->self;
> > > - hcd->self.otg_port = 1;
> > > - }
> > > + otg->host = &hcd->self;
> > > + hcd->self.otg_port = 1;
> > > }
> >
> > You may need use other way to identify if otg is supported or not
>
> How would you do that?
ci_otg_is_fsm_mode(ci)
>
> > > - otg->usb_phy = ci->usb_phy;
> > > - otg->gadget = &ci->gadget;
> > > - ci->fsm.otg = otg;
> > > - ci->usb_phy->otg = ci->fsm.otg;
> > > + ci->otg.usb_phy = ci->usb_phy;
> > > + ci->fsm.otg = &ci->otg;
> > > ci->fsm.power_up = 1;
> > > ci->fsm.id = hw_read_otgsc(ci, OTGSC_ID) ? 1 : 0;
> > > ci->fsm.otg->state = OTG_STATE_UNDEFINED;
> >
> > Why otg->gadget and ci->usb_phy->otg initialization are deleted?
> > At least, the parameters of usb_otg_state_string at your 7th patch uses it.
>
> Sure, I'll fix this
>
> Antoine
>
> --
> Antoine Ténart, Free Electrons
> Embedded Linux, Kernel and Android engineering
> http://free-electrons.com
--
Best Regards,
Peter Chen
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