Merge branch 'pm-qos'

[firefly-linux-kernel-4.4.55.git] / drivers / usb / gadget / dummy_hcd.c

diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c
index b799106027adfc5d75a45244a47fbd015bedfd20..afdbb1cbf5d94d972c52f57f4099a1bb0202bef5 100644 (file)
--- 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;
@@ -2503,10 +2536,8 @@ static int dummy_hcd_probe(struct platform_device *pdev)
        hs_hcd->has_tt = 1;
 
        retval = usb_add_hcd(hs_hcd, 0, 0);
-       if (retval != 0) {
-               usb_put_hcd(hs_hcd);
-               return retval;
-       }
+       if (retval)
+               goto put_usb2_hcd;
 
        if (mod_data.is_super_speed) {
                ss_hcd = usb_create_shared_hcd(&dummy_hcd, &pdev->dev,
@@ -2525,6 +2556,8 @@ static int dummy_hcd_probe(struct platform_device *pdev)
 put_usb3_hcd:
        usb_put_hcd(ss_hcd);
 dealloc_usb2_hcd:
+       usb_remove_hcd(hs_hcd);
+put_usb2_hcd:
        usb_put_hcd(hs_hcd);
        the_controller.hs_hcd = the_controller.ss_hcd = NULL;
        return retval;