diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/gadget/udc/core.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c index 62d52fc0fcdc..eec388bccb25 100644 --- a/drivers/usb/gadget/udc/core.c +++ b/drivers/usb/gadget/udc/core.c @@ -1056,6 +1056,23 @@ static inline void usb_gadget_udc_stop(struct usb_udc *udc) } /** + * usb_gadget_udc_set_speed - tells usb device controller speed supported by + * current driver + * @udc: The device we want to set maximum speed + * @speed: The maximum speed to allowed to run + * + * This call is issued by the UDC Class driver before calling + * usb_gadget_udc_start() in order to make sure that we don't try to + * connect on speeds the gadget driver doesn't support. + */ +static inline void usb_gadget_udc_set_speed(struct usb_udc *udc, + enum usb_device_speed speed) +{ + if (udc->gadget->ops->udc_set_speed) + udc->gadget->ops->udc_set_speed(udc->gadget, speed); +} + +/** * usb_udc_release - release the usb_udc struct * @dev: the dev member within usb_udc * @@ -1288,6 +1305,9 @@ static int udc_bind_to_driver(struct usb_udc *udc, struct usb_gadget_driver *dri udc->dev.driver = &driver->driver; udc->gadget->dev.driver = &driver->driver; + if (driver->max_speed < udc->gadget->max_speed) + usb_gadget_udc_set_speed(udc, driver->max_speed); + ret = driver->bind(udc->gadget, driver); if (ret) goto err1; |