I've soldered added a usb connector to my Freecom Musicpal internet
radio, and it works fine with USB memory sticks, but gets stuck if there
is a USB hub inserted.
I don't know enough to tell if it is a kernel problem or a user space
problem
My USB hard disk has a built-in hub as lsusb shows:
Bus 005 Device 006: ID 1058:0702 Western Digital Technologies, Inc.
Passport External HDD
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
The musicpal doesn't like usb hubs; it recognizes "a" usb device as
dmesg on the musicpal shows:
Jan 17 10:58:00 MusicPal user.info kernel: usb 1-1: USB disconnect,
address 6
Jan 17 10:58:01 MusicPal user.info kernel: usb 1-1: new high speed USB
device using ehci-mv88w8xx8 and address 7
Jan 17 10:58:01 MusicPal user.info kernel: usb 1-1: configuration #1
chosen from 1 choice
But it doesn't go on to enumerate the devices on the bus.
What can I do to help it see the devices beyond the hub?
if I plug in a 4 port hub, dmesg -c shows:
$ dmesg -c
usb 1-1: new high speed USB device using ehci-mv88w8xx8 and address 12
usb 1-1: ep0 maxpacket = 8
usb 1-1: new high speed USB device using ehci-mv88w8xx8 and address 13
usb 1-1: ep0 maxpacket = 8
usb 1-1: new high speed USB device using ehci-mv88w8xx8 and address 14
usb 1-1: ep0 maxpacket = 8
usb 1-1: new high speed USB device using ehci-mv88w8xx8 and address 15
usb 1-1: ep0 maxpacket = 8
but the new hubs don't show up
$ ls -l /sys/bus/usb/drivers/hub/
lrwxrwxrwx 1 root root 0 Jan 17 10:56 1-0:1.0 ->
./../../../devices/platform/ehci-mv88w8xx8.1436/usb1/1-0:1.0
--w------- 1 root root 4096 Jan 17 10:56 bind
--w------- 1 root root 4096 Jan 17 10:56 new_id
--w------- 1 root root 4096 Jan 17 10:56 unbind
On my desktop, lsusb shows:
Bus 002 Device 002: ID 058f:9254 Alcor Micro Corp. Hub
and /sys/bus/usb/drivers/hub shows:
lrwxrwxrwx 1 root root 0 2009-01-17 11:18 2-1:1.0 ->
./../../../devices/pci0000:00/0000:00:1d.1/usb2/2-1/2-1:1.0
for the new hub
Any tips as to what normally happens at this point?
I've got a shell on the musicpal and can run many commands.
What does a normal system do to make the hub-connected devices appear?
Thanks
Sam
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