On Mon, 18 Oct 2004, Guennadi Liakhovetski wrote:

> Some more: just rebooted with ACPI=off, loaded all modules, inserted the
> stick, and
> 
> uhci_hcd 0000:00:1f.2: port 2 portsc 0083
> hub 1-0:1.0: port 2, status 0101, change 0001, 12 Mb/s
> uhci_hcd 0000:00:1f.2: wakeup_hc
> hub 1-0:1.0: debounce: port 2: total 100ms stable 100ms status 0x101
> usb 1-2: new full speed USB device using address 2
> uhci_hcd 0000:00:1f.2: uhci_result_control: failed with status 440000
> [c8bce240] link (08bce1e2) element (08baa040)
>   0: [c8baa040] link (08baa080) e0 Stalled CRC/Timeo Length=7 MaxLen=7 DT0
> EndPt=0 Dev=0, PID=2d(SETUP) (buf=0f34b7a0)
>   1: [c8baa080] link (00000001) e3 IOC Active Length=0 MaxLen=7ff DT1
> EndPt=0 Dev=0, PID=69(IN) (buf=00000000)
> 
> usb 1-2: new device strings: Mfr=2, Product=3, SerialNumber=4
> usb 1-2: default language 0x0409
> usb 1-2: Product: Cruzer Mini
> usb 1-2: Manufacturer: SanDisk Corporation
> usb 1-2: SerialNumber: 00168368
> usb 1-2: hotplug
> usb 1-2: adding 1-2:1.0 (config #1, interface 0)
> usb 1-2:1.0: hotplug
> 
> I guess, those additional messages come not because I rebooted without
> ACPI, but because on previous boot I inserted and removed modules several
> times...

Those additional UHCI error messages came because sometimes devices don't
always reply right away when they are first plugged in.  It's not a
serious problem provided the device does respond eventually.

> Just re-checked: re-booted into 2.6.6-bk6 (it wasn't 2.6.5) - it worked.
> The hang I saw there was not every time there. I had "mount /dev/sda1"
> hang under 2.4.21 on this PC too. Just compared lsmod and .config's from
> 2.6.6-bk6 and 2.6.9-rc4 - quite similar. Ok, under 2.6.9 I turned on
> debugging in USB. 2.6.9 doesn't have CONFIG_SCSI_REPORT_LUNS any more, but
> I had it on "y" in 2.6.6 anyway.

The problem you're worried about is that usb-storage isn't binding to your
devices, right?  Do you have CONFIG_BLK_DEV_UB set?  If it is, then the ub 
driver will bind to most USB mass storage devices in preference to 
usb-storage.  Maybe you just need to remove the ub driver from your 
configuration -- or load the ub driver by hand.

Alan Stern



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