3 files changed, 10 insertions, 14 deletions

diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h
index ac57527..3837f68 100644
--- a/drivers/usb/core/hcd.h
+++ b/drivers/usb/core/hcd.h
@@ -87,6 +87,7 @@ struct usb_hcd {	/* usb_bus.hcpriv points to this */
 	void __iomem		*regs;		/* device memory/io */
 	u64			rsrc_start;	/* memory/io resource start */
 	u64			rsrc_len;	/* memory/io resource length */
+	unsigned		power_budget;	/* in mA, 0 = no limit */
 
 #define HCD_BUFFER_POOLS	4
 	struct dma_pool		*pool [HCD_BUFFER_POOLS];
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 6d1a330..63ee3d9 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -643,15 +643,21 @@ static int hub_configure(struct usb_hub *hub,
 		message = "can't get hub status";
 		goto fail;
 	}
-	cpu_to_le16s(&hubstatus);
-	if ((hubstatus & (1 << USB_DEVICE_SELF_POWERED)) == 0) {
+	le16_to_cpus(&hubstatus);
+	if (hdev == hdev->bus->root_hub) {
+		struct usb_hcd *hcd =
+				container_of(hdev->bus, struct usb_hcd, self);
+
+		hub->power_budget = min(500u, hcd->power_budget) / 2;
+	} else if ((hubstatus & (1 << USB_DEVICE_SELF_POWERED)) == 0) {
 		dev_dbg(hub_dev, "hub controller current requirement: %dmA\n",
 			hub->descriptor->bHubContrCurrent);
 		hub->power_budget = (501 - hub->descriptor->bHubContrCurrent)
 					/ 2;
+	}
+	if (hub->power_budget)
 		dev_dbg(hub_dev, "%dmA bus power budget for children\n",
 			hub->power_budget * 2);
-	}
 
 
 	ret = hub_hub_status(hub, &hubstatus, &hubchange);
diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h
index d114b84..53bf564 100644
--- a/drivers/usb/core/hub.h
+++ b/drivers/usb/core/hub.h
@@ -224,15 +224,4 @@ struct usb_hub {
 	struct work_struct	leds;
 };
 
-/* use this for low-powered root hubs */
-static inline void
-hub_set_power_budget (struct usb_device *hubdev, unsigned mA)
-{
-	struct usb_hub	*hub;
-
-	hub = (struct usb_hub *)
-		usb_get_intfdata (hubdev->actconfig->interface[0]);
-	hub->power_budget = min(mA,(unsigned)500)/2;
-}
-
 #endif /* __LINUX_HUB_H */