> From: Marek Szyprowski [mailto:m.szyprowski@xxxxxxxxxxx] > Sent: Monday, October 20, 2014 3:46 AM > > This patch adds a call to s3c_hsotg_disconnect() from 'end session' > interrupt (GOTGINT_SES_END_DET) to correctly notify gadget subsystem > about unplugged usb cable. 'disconnected' interrupt (DISCONNINT) might > look a bit more suitable for this event, but it is asserted only in > host mode, so in device mode we need to use something else. > > Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> > --- > drivers/usb/dwc2/gadget.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c > index 7b5856fadd93..119c8a3effc2 100644 > --- a/drivers/usb/dwc2/gadget.c > +++ b/drivers/usb/dwc2/gadget.c > @@ -2279,6 +2279,12 @@ irq_retry: > dev_info(hsotg->dev, "OTGInt: %08x\n", otgint); > > writel(otgint, hsotg->regs + GOTGINT); > + > + if (otgint & GOTGINT_SES_END_DET) { > + if (hsotg->gadget.speed != USB_SPEED_UNKNOWN) > + s3c_hsotg_disconnect(hsotg); > + hsotg->gadget.speed = USB_SPEED_UNKNOWN; > + } > } > > if (gintsts & GINTSTS_SESSREQINT) { Does this mean we can get rid of the call to s3c_hsotg_disconnect in s3c_hsotg_process_control after a SET_ADDRESS is received? If not, then s3c_hsotg_disconnect will be called twice, once here after the disconnect, and once again after the reconnect and SET_ADDRESS. -- Paul -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
