Hi,
On Tue, Sep 16, 2014 at 10:02:25AM +0800, Peter Chen wrote:
> On Mon, Sep 15, 2014 at 12:42:27PM +0200, Andreas Larsson wrote:
> > The state attribute is connected to the kobj of the udc, not the gadget.
> >
> > Signed-off-by: Andreas Larsson <andreas@xxxxxxxxxxx>
> > ---
> > drivers/usb/gadget/udc/udc-core.c | 14 +++++++++++++-
> > 1 file changed, 13 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/usb/gadget/udc/udc-core.c b/drivers/usb/gadget/udc/udc-core.c
> > index b0d9817..37c129a 100644
> > --- a/drivers/usb/gadget/udc/udc-core.c
> > +++ b/drivers/usb/gadget/udc/udc-core.c
> > @@ -109,8 +109,20 @@ EXPORT_SYMBOL_GPL(usb_gadget_unmap_request);
> > static void usb_gadget_state_work(struct work_struct *work)
> > {
> > struct usb_gadget *gadget = work_to_gadget(work);
> > + struct usb_udc *udc = NULL;
> > +
> > + mutex_lock(&udc_lock);
> > + list_for_each_entry(udc, &udc_list, list)
> > + if (udc->gadget == gadget)
> > + goto found;
> > + mutex_unlock(&udc_lock);
> > +
> > + return;
> > +
> > +found:
> > + mutex_unlock(&udc_lock);
> >
> > - sysfs_notify(&gadget->dev.kobj, NULL, "state");
> > + sysfs_notify(&udc->dev.kobj, NULL, "state");
> > }
> >
> > void usb_gadget_set_state(struct usb_gadget *gadget,
>
> What's the user mode difference with and without this patch?
poll() will actually wakeup ?
--
balbi
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