From: Macpaul Lin <[email protected]> Copy usb_otg_descriptor from config's descriptor if host requests USB_DT_OTG.
Signed-off-by: Macpaul Lin <[email protected]> Signed-off-by: Li Jun <[email protected]> --- drivers/usb/gadget/composite.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 707959c..81a2061 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1565,6 +1565,24 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) value = min(w_length, (u16) value); } break; + case USB_DT_OTG: + if (gadget_is_otg(gadget)) { + struct usb_configuration *config; + + if (cdev->config) + config = cdev->config; + else + config = list_first_entry( + &cdev->configs, + struct usb_configuration, list); + if (!config) + goto done; + + value = min_t(int, w_length, + sizeof(struct usb_otg_descriptor)); + memcpy(req->buf, config->descriptors[0], value); + } + break; } break; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
