From 1c3cefa582a6b598d204bad02676df300e457efa Mon Sep 17 00:00:00 2001
From: Linus Torvalds <torvalds@athlon.transmeta.com>
Date: Mon, 4 Feb 2002 20:13:37 -0800
Subject: v2.4.9.4 -> v2.4.9.5

  - Merge with Alan
  - Trond Myklebust: NFS fixes - kmap and root inode special case
  - Al Viro: more superblock cleanups, inode leak in rd.c, minix
  directories in page cache
  - Paul Mackerras: clean up rubbish from sl82c105.c
  - Neil Brown: md/raid cleanups, NFS filehandles
  - Johannes Erdfelt: USB update (usb-2.0 support, visor fix, Clie fix,
  pl2303 driver update)
  - David Miller: sparc and net update
  - Eric Biederman: simplify and correct bootdata allocation - don't
  overwrite ramdisks
  - Tim Waugh: support multiple SuperIO devices, parport doc updates
---
 include/linux/usb.h | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

(limited to 'include/linux/usb.h')

diff --git a/include/linux/usb.h b/include/linux/usb.h
index 9fc2074b2d78..542156a0b262 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -589,11 +589,23 @@ struct usb_bus {
 	atomic_t refcnt;
 };
 
-#define USB_MAXCHILDREN		(16)	/* This is arbitrary */
+/* This is arbitrary.
+ * From USB 2.0 spec Table 11-13, offset 7, a hub can
+ * have up to 255 ports. The most yet reported is 10.
+ */
+#define USB_MAXCHILDREN		(16)
 
 struct usb_device {
 	int devnum;			/* Device number on USB bus */
-	int slow;			/* Slow device? */
+
+	enum {
+		USB_SPEED_UNKNOWN = 0,			/* enumerating */
+		USB_SPEED_LOW, USB_SPEED_FULL,		/* usb 1.1 */
+		USB_SPEED_HIGH				/* usb 2.0 */
+	} speed;
+
+	struct usb_device *tt;		/* usb1.1 device on usb2.0 bus */
+	int ttport;			/* device/hub port on that tt */
 
 	atomic_t refcnt;		/* Reference count */
 	struct semaphore serialize;
@@ -704,6 +716,9 @@ int usb_get_current_frame_number (struct usb_device *usb_dev);
  * up to us. This one happens to share a lot of bit positions with the UHCI
  * specification, so that much of the uhci driver can just mask the bits
  * appropriately.
+ *
+ * NOTE:  there's no encoding (yet?) for a "high speed" endpoint; treat them
+ * like full speed devices.
  */
 
 #define PIPE_ISOCHRONOUS		0
@@ -744,12 +759,13 @@ int usb_get_current_frame_number (struct usb_device *usb_dev);
 
 static inline unsigned int __create_pipe(struct usb_device *dev, unsigned int endpoint)
 {
-	return (dev->devnum << 8) | (endpoint << 15) | (dev->slow << 26);
+	return (dev->devnum << 8) | (endpoint << 15) |
+		((dev->speed == USB_SPEED_LOW) << 26);
 }
 
 static inline unsigned int __default_pipe(struct usb_device *dev)
 {
-	return (dev->slow << 26);
+	return ((dev->speed == USB_SPEED_LOW) << 26);
 }
 
 /* Create various pipes... */
-- 
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