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-rw-r--r--include/linux/usb.h11
-rw-r--r--include/uapi/linux/usb/ch11.h11
2 files changed, 11 insertions, 11 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h
index a232b7ece1f6..0eec2689b955 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -367,17 +367,6 @@ struct usb_bus {
367 367
368/* ----------------------------------------------------------------------- */ 368/* ----------------------------------------------------------------------- */
369 369
370/* This is arbitrary.
371 * From USB 2.0 spec Table 11-13, offset 7, a hub can
372 * have up to 255 ports. The most yet reported is 10.
373 *
374 * Current Wireless USB host hardware (Intel i1480 for example) allows
375 * up to 22 devices to connect. Upcoming hardware might raise that
376 * limit. Because the arrays need to add a bit for hub status data, we
377 * do 31, so plus one evens out to four bytes.
378 */
379#define USB_MAXCHILDREN (31)
380
381struct usb_tt; 370struct usb_tt;
382 371
383enum usb_device_removable { 372enum usb_device_removable {
diff --git a/include/uapi/linux/usb/ch11.h b/include/uapi/linux/usb/ch11.h
index 7692dc69ccf7..331499d597fa 100644
--- a/include/uapi/linux/usb/ch11.h
+++ b/include/uapi/linux/usb/ch11.h
@@ -11,6 +11,17 @@
11 11
12#include <linux/types.h> /* __u8 etc */ 12#include <linux/types.h> /* __u8 etc */
13 13
14/* This is arbitrary.
15 * From USB 2.0 spec Table 11-13, offset 7, a hub can
16 * have up to 255 ports. The most yet reported is 10.
17 *
18 * Current Wireless USB host hardware (Intel i1480 for example) allows
19 * up to 22 devices to connect. Upcoming hardware might raise that
20 * limit. Because the arrays need to add a bit for hub status data, we
21 * use 31, so plus one evens out to four bytes.
22 */
23#define USB_MAXCHILDREN 31
24
14/* 25/*
15 * Hub request types 26 * Hub request types
16 */ 27 */