4.13-stable review patch. If anyone has any objections, please let me know.
------------------ From: Roger Quadros <[email protected]> commit 97e133d54c1ca8948b191e5721a145a76c4db33d upstream. Consider the following case: udc controller supports SuperSpeed. If we first load a HighSpeed gadget followed by a SuperSpeed gadget, the SuperSpeed gadget will be limited to HighSpeed as UDC core driver doesn't call ->udc_set_speed() in the second case. Call ->udc_set_speed() unconditionally to fix this issue. This will also fix the case for dwc3 controller driver when SuperSpeed gadget is loaded first and works in HighSpeed only as udc_set_speed() was never being called. Fixes: 6099eca796ae ("usb: gadget: core: introduce ->udc_set_speed() method") Signed-off-by: Roger Quadros <[email protected]> Signed-off-by: Felipe Balbi <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/usb/gadget/udc/core.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/drivers/usb/gadget/udc/core.c +++ b/drivers/usb/gadget/udc/core.c @@ -1314,8 +1314,7 @@ static int udc_bind_to_driver(struct usb 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); + usb_gadget_udc_set_speed(udc, driver->max_speed); ret = driver->bind(udc->gadget, driver); if (ret)
