On Wed, May 09, 2012 at 06:51:03AM +0100, Ben Hutchings wrote: > 3.2-stable review patch. If anyone has any objections, please let me know. > > ------------------ > > From: Felipe Balbi <[email protected]> > > commit 6d258a4c42089229b855fd706622029decf316d6 upstream.
We also need a follow up fix to this, commit 83a787a71e034244a9fd1d5988fe18f226341417 upstream. > > When we want to do device-initiated disconnect, > let's make sure we stop the UDC in order to > e.g. allow lower power states to be achieved by > turning off unnecessary clocks and/or stoping > PHYs. > > When reconnecting, call ->udc_start() again to > make sure UDC is reinitialized. > > Signed-off-by: Felipe Balbi <[email protected]> > Signed-off-by: Ben Hutchings <[email protected]> > --- > drivers/usb/gadget/udc-core.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/usb/gadget/udc-core.c b/drivers/usb/gadget/udc-core.c > index 56da49f..c261887 100644 > --- a/drivers/usb/gadget/udc-core.c > +++ b/drivers/usb/gadget/udc-core.c > @@ -411,8 +411,12 @@ static ssize_t usb_udc_softconn_store(struct device *dev, > struct usb_udc *udc = container_of(dev, struct usb_udc, dev); > > if (sysfs_streq(buf, "connect")) { > + if (udc_is_newstyle(udc)) > + usb_gadget_udc_start(udc->gadget, udc->driver); > usb_gadget_connect(udc->gadget); > } else if (sysfs_streq(buf, "disconnect")) { > + if (udc_is_newstyle(udc)) > + usb_gadget_udc_stop(udc->gadget, udc->driver); > usb_gadget_disconnect(udc->gadget); > } else { > dev_err(dev, "unsupported command '%s'\n", buf); > -- > 1.7.10 > > > > -- > To unsubscribe from this list: send the line "unsubscribe stable" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
