diff options
Diffstat (limited to 'include/linux/usb.h')
| -rw-r--r-- | include/linux/usb.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h index 5482bfb3303..e5cb1690975 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -313,8 +313,13 @@ struct usb_bus { /* 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. + * + * Current Wireless USB host hardware (Intel i1480 for example) allows + * up to 22 devices to connect. Upcoming hardware might raise that + * limit. Because the arrays need to add a bit for hub status data, we + * do 31, so plus one evens out to four bytes. */ -#define USB_MAXCHILDREN (16) +#define USB_MAXCHILDREN (31) struct usb_tt; |