When handling device GET_DESCRIPTOR, composite gadget driver fills the bcdUSB field only if the gadget supports USB 3.0. Otherwise the field is left unfilled.
Make behaviour consistent by filling bcdUSB for the other two cases of USB 2.0 and USB 1.1 capable gadgets. Given that legacy gadget drivers set bcdUSB manually, it makes sense to place the entire logic in the composite gadget driver. Signed-off-by: Igor Kotrasinski <i.kotrasi...@samsung.com> --- drivers/usb/gadget/composite.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 58b4657..6eac055 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1499,6 +1499,10 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) } else { cdev->desc.bcdUSB = cpu_to_le16(0x0210); } + } else if (gadget_is_dualspeed(gadget)) { + cdev->desc.bcdUSB = cpu_to_le16(0x0200); + } else { + cdev->desc.bcdUSB = cpu_to_le16(0x0110); } value = min(w_length, (u16) sizeof cdev->desc); -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html