A umass device fails to get recognised through a self powered USB hub on
macppc. Device works fine on i386. Other USB devices, including other
umass devices, get recognised through the same self powered USB hub on
macppc.

The failed umass device is a 1GB iPod shuffle. When plugged into the
Cypress Semiconductor USB2 Hub, on macppc, no umass? gets recognised at
all, on it's own or with other devices, yet others devices appear fine.
Connecting the iPod shuffle, through the hub, on i386 works fine. The
iPod shuffle gets recognised when attached directly to the hardware of
macppc or i386.

============
macppc
============
uhub0 at usb0
uhub0: Apple OHCI root hub, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhub1 at usb1
uhub1: Apple OHCI root hub, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
uhub2 at usb2
uhub2: Apple OHCI root hub, rev 1.00/1.00, addr 1
uhub2: 2 ports with 2 removable, self powered
uhub3 at usb3
uhub3: NEC OHCI root hub, rev 1.00/1.00, addr 1
uhub3: 3 ports with 3 removable, self powered
uhub4 at usb4
uhub4: NEC OHCI root hub, rev 1.00/1.00, addr 1
uhub4: 2 ports with 2 removable, self powered
uhub5 at usb5
uhub5: NEC EHCI root hub, rev 2.00/1.00, addr 1
uhub5: 5 ports with 5 removable, self powered
uhub6 at uhub5 port 2
uhub6: Cypress Semiconductor USB2 Hub, rev 2.00/0.09, addr 2
uhub6: 4 ports with 4 removable, self powered, multiple transaction
translators
axe0 at uhub6 port 1 configuration 1 interface 0
axe0: Linksys USB 2.0 10/100 ethernet controller, rev 2.00/0.01, addr 3,
address 00:10:60:84:ab:2d
rlphy0 at axe0 phy 3: RTL8201L 10/100 PHY, rev. 1
ural0 at uhub6 port 2
ural0: Sparklan WL-685R, rev 2.00/0.01, addr 4
ural0: MAC/BBP RT2570 (rev 0x03), RF RT2526, address 00:90:4b:d4:f3:b4
umass0 at uhub6 port 3 configuration 1 interface 0
umass0: IBM USB 2.0 Memory Key, rev 2.00/2.00, addr 5
umass0: using ATAPI over Bulk-Only
scsibus1 at umass0: 2 targets
sd0 at scsibus1 targ 1 lun 0: <IBM, Memory Key, 3.52> SCSI0 0/direct
removable
sd0: 244MB, 976 cyl, 128 head, 4 sec, 512 bytes/sec, 499712 sec total

============
i386
============
uhub0 at usb0
uhub0: Intel UHCI root hub, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhub1 at usb1
uhub1: Intel UHCI root hub, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
uhub2 at usb2
uhub2: Intel UHCI root hub, rev 1.00/1.00, addr 1
uhub2: 2 ports with 2 removable, self powered
uhub3 at usb3
uhub3: Intel EHCI root hub, rev 2.00/1.00, addr 1
uhub3: 6 ports with 6 removable, self powered
uhub4 at uhub3 port 4
uhub4: Cypress Semiconductor USB2 Hub, rev 2.00/0.09, addr 2
uhub4: 4 ports with 4 removable, self powered, multiple transaction
translators
umass0 at uhub4 port 3 configuration 1 interface 0
umass0: Apple iPod, rev 2.00/10.01, addr 3
umass0: using SCSI over Bulk-Only
scsibus0 at umass0: 2 targets
sd0 at scsibus0 targ 1 lun 0: <Apple, iPod, 2.70> SCSI4 0/direct
removable
sd0: 992MB, 992 cyl, 64 head, 32 sec, 512 bytes/sec, 2032640 sec total

Ed.