On Thu, Mar 26, 2015 at 11:50:11AM +0800, Chen Peter-B29397 wrote:
>
> >
> > This is to fix the problem of HNP you reported after apply my HNP polling
> > patchset, I verified with i.MX6DL and i.MX6SX SDB and it works ok(with each
> > one as A or B device).
> >
> > ---
> > drivers/usb/chipidea/otg_fsm.c | 4 ----
> > 1 file changed, 4 deletions(-)
> >
> > diff --git a/drivers/usb/chipidea/otg_fsm.c b/drivers/usb/chipidea/otg_fsm.c
> > index 82b1e23..789dd76 100644
> > --- a/drivers/usb/chipidea/otg_fsm.c
> > +++ b/drivers/usb/chipidea/otg_fsm.c
> > @@ -531,7 +531,6 @@ static int ci_otg_start_host(struct otg_fsm *fsm, int
> > on)
> > {
> > struct ci_hdrc *ci = container_of(fsm, struct ci_hdrc, fsm);
> >
> > - mutex_unlock(&fsm->lock);
> > if (on) {
> > ci_role_stop(ci);
> > ci_role_start(ci, CI_ROLE_HOST);
> > @@ -540,7 +539,6 @@ static int ci_otg_start_host(struct otg_fsm *fsm, int
> > on)
> > hw_device_reset(ci);
> > ci_role_start(ci, CI_ROLE_GADGET);
> > }
> > - mutex_lock(&fsm->lock);
> > return 0;
> > }
> >
>
> What is intention you added before?
>
not to sleep with the lock hold, actually it's not a problem.
Li Jun
> Peter
>
> > @@ -548,12 +546,10 @@ static int ci_otg_start_gadget(struct otg_fsm *fsm,
> > int
> > on) {
> > struct ci_hdrc *ci = container_of(fsm, struct ci_hdrc, fsm);
> >
> > - mutex_unlock(&fsm->lock);
> > if (on)
> > usb_gadget_vbus_connect(&ci->gadget);
> > else
> > usb_gadget_vbus_disconnect(&ci->gadget);
> > - mutex_lock(&fsm->lock);
> >
> > return 0;
> > }
> > --
> > 1.9.1
>
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