Merge tag 'v3.6' into staging/for_v3.7

Linux 3.6

* tag 'v3.6': (562 commits)
  Linux 3.6
  vfs: dcache: fix deadlock in tree traversal
  mtdchar: fix offset overflow detection
  thp: avoid VM_BUG_ON page_count(page) false positives in __collapse_huge_page_copy
  iommu/amd: Fix wrong assumption in iommu-group specific code
  netdev: octeon: fix return value check in octeon_mgmt_init_phy()
  ALSA: snd-usb: fix next_packet_size calls for pause case
  inetpeer: fix token initialization
  qlcnic: Fix scheduling while atomic bug
  bnx2: Clean up remaining iounmap
  trivial select_parent documentation fix
  net: phy: smsc: Implement PHY config_init for LAN87xx
  smsc75xx: fix resume after device reset
  um: Preinclude include/linux/kern_levels.h
  um: Fix IPC on um
  netdev: pasemi: fix return value check in pasemi_mac_phy_init()
  team: fix return value check
  l2tp: fix return value check
  USB: Fix race condition when removing host controllers
  USB: ohci-at91: fix null pointer in ohci_hcd_at91_overcurrent_irq
  ...

1 files changed, 37 insertions, 4 deletions

diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c
index b799106027ad..afdbb1cbf5d9 100644
--- 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;