From: Greg KH <[email protected]> 3.5-stable review patch. If anyone has any objections, please let me know.
------------------ From: Sebastian Andrzej Siewior <[email protected]> commit 3b9c1c5ba7a95caae8440ea47308496b14f7301a upstream. Without a reply for USB_DT_BOS the USB3 mode does not work since 448b6eb1 ("USB: Make sure to fetch the BOS desc for roothubs.). Signed-off-by: Sebastian Andrzej Siewior <[email protected]> Signed-off-by: Felipe Balbi <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/usb/gadget/dummy_hcd.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) --- a/drivers/usb/gadget/dummy_hcd.c +++ b/drivers/usb/gadget/dummy_hcd.c @@ -1916,6 +1916,27 @@ done: return retval; } +/* usb 3.0 root hub device descriptor */ +struct { + struct usb_bos_descriptor bos; + struct usb_ss_cap_descriptor ss_cap; +} __packed usb3_bos_desc = { + + .bos = { + .bLength = USB_DT_BOS_SIZE, + .bDescriptorType = USB_DT_BOS, + .wTotalLength = cpu_to_le16(sizeof(usb3_bos_desc)), + .bNumDeviceCaps = 1, + }, + .ss_cap = { + .bLength = USB_DT_USB_SS_CAP_SIZE, + .bDescriptorType = USB_DT_DEVICE_CAPABILITY, + .bDevCapabilityType = USB_SS_CAP_TYPE, + .wSpeedSupported = cpu_to_le16(USB_5GBPS_OPERATION), + .bFunctionalitySupport = ilog2(USB_5GBPS_OPERATION), + }, +}; + static inline void ss_hub_descriptor(struct usb_hub_descriptor *desc) { @@ -2006,6 +2027,18 @@ static int dummy_hub_control( else hub_descriptor((struct usb_hub_descriptor *) buf); break; + + case DeviceRequest | USB_REQ_GET_DESCRIPTOR: + if (hcd->speed != HCD_USB3) + goto error; + + if ((wValue >> 8) != USB_DT_BOS) + goto error; + + memcpy(buf, &usb3_bos_desc, sizeof(usb3_bos_desc)); + retval = sizeof(usb3_bos_desc); + break; + case GetHubStatus: *(__le32 *) buf = cpu_to_le32(0); break; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
