[Bug 88746] Re: ehci_hcd module causes I/O errors in USB 2.0 devices

[alphalupus08]

At the moment I'm running OpenSUSE 11.0 with kernel
2.6.25.16-0.1-default (x86_64) and observe the same behaviour (USB
Controller is an ATI S600, by the way).

Whenever I plug in any USB-2.0 device (hard disk, flash memory or external DVD burner - doesn't matter what) 
it takes quite a while until the device is mounted, and all these guys are mounted only in full speed mode.

With usbview I can check, that the high speed devices are connected
first to the EHCI hub and become accessible as soon as they are passed
to one of the OHCIs.

The ehci_hcd seems to try hard to catch the devices, so I get the well-known messages. 
Sep 18 14:34:44 faramir kernel: usb 6-1: new high speed USB device using ehci_hcd and address 3
Sep 18 14:34:59 faramir kernel: usb 6-1: device descriptor read/64, error -110
Sep 18 14:34:59 faramir kernel: usb 6-1: device descriptor read/64, error -110
Sep 18 14:35:15 faramir kernel: usb 6-1: new high speed USB device using ehci_hcd and address 4
Sep 18 14:35:30 faramir kernel: usb 6-1: device descriptor read/64, error -110
Sep 18 14:35:45 faramir kernel: usb 6-1: device descriptor read/64, error -110
Sep 18 14:35:45 faramir kernel: usb 6-1: new high speed USB device using ehci_hcd and address 5
Sep 18 14:35:56 faramir kernel: usb 6-1: device not accepting address 5, error -110
Sep 18 14:35:56 faramir kernel: usb 6-1: new high speed USB device using ehci_hcd and address 6
Sep 18 14:36:06 faramir kernel: usb 6-1: device not accepting address 6, error -110
Sep 18 14:36:06 faramir kernel: hub 6-0:1.0: unable to enumerate USB device on port 1
Sep 18 14:36:07 faramir kernel: usb 1-1: new full speed USB device using ohci_hcd and address 2
Sep 18 14:36:07 faramir kernel: usb 1-1: not running at top speed; connect to a high speed hub
Sep 18 14:36:07 faramir kernel: usb 1-1: configuration #1 chosen from 1 choice
Sep 18 14:36:07 faramir kernel: usb 1-1: New USB device found, idVendor=1058, idProduct=0702
Sep 18 14:36:07 faramir kernel: usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Sep 18 14:36:07 faramir kernel: usb 1-1: Product: External HDD
Sep 18 14:36:07 faramir kernel: usb 1-1: Manufacturer: Western Digital

Is it meaningful that the error message changes betwenn address 4 and
address 5 while the error code remains the same.

Yesterday I tried a kernel compiled on my on (2.6.26.5-default) -- no improvement at all.
Using kernel boot params "acpi=off noapic nohpet" etc. -- no effect. 

I use the hard disk just for syncing with unison so I could live with
that. But I am really embarassed for the low speed behaviour of my DVD
burner :-(

-- 
ehci_hcd module causes I/O errors in USB 2.0 devices
https://bugs.launchpad.net/bugs/88746
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