Re: Trouble with usb modem

On 10/9/07, Davide Pagnin <[email protected]> wrote:
> Oliver Neukum ha scritto:
> > Am Freitag 05 Oktober 2007 schrieb Davide Pagnin:
> >> Provided that the driver for the IBM/QLOGIC hba works, I can try a more
> >> recent kernel, do you suggest me to try the last vanilla kernel or a
> >> kernel from SUSE SLES 10?
> >
> > If you want support from this list, it'll have to be a vanilla kernel.
>
> I've compiled kernel 2.6.22.9, it seems to work (the modem is recognized
> and the cdc-acm module is load).
>
> I've attached the dmesg of a boot with this kernel (I've enough
> knowledge to understand what is going on, but AFAIK, it seems to make
> have trouble and then it seems to be able to recover those trouble.
>
> I'm now compiling kernel 2.6.16.54 (to see if there are changes in the
> behavior).
>
> I can't use (in the production environment) the vanilla kernel, because
> I'm not able to have the QLOGIC hba work correctly, so the only viable
> choice is to find the relevant fixes and recompile the suse kernel with
> those fixes (I know this is going to give me more than an headache, but
> I see no other solution)
>
> Any kind of suggestion will be appreciated
>
> Regards
>
> Davide Pagnin
> Linux version 2.6.22.9 (root@srv2lnx) (gcc version 3.3.3 (SuSE Linux)) #1 SMP Tue Oct 9 14:20:51 CEST 2007
> usbcore: registered new interface driver usbfs
> usbcore: registered new interface driver hub
> usbcore: registered new device driver usb
> USB Universal Host Controller Interface driver v3.0
> PCI: Setting latency timer of device 0000:00:1d.0 to 64
> uhci_hcd 0000:00:1d.0: UHCI Host Controller
> uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 1
> uhci_hcd 0000:00:1d.0: irq 16, io base 0x00002200
> usb usb1: configuration #1 chosen from 1 choice
> hub 1-0:1.0: USB hub found
> hub 1-0:1.0: 2 ports detected
> PCI: Setting latency timer of device 0000:00:1d.1 to 64
> uhci_hcd 0000:00:1d.1: UHCI Host Controller
> uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 2
> uhci_hcd 0000:00:1d.1: irq 19, io base 0x00002600
> usb usb2: configuration #1 chosen from 1 choice
> hub 2-0:1.0: USB hub found
> hub 2-0:1.0: 2 ports detected
> usb 1-2: new full speed USB device using uhci_hcd and address 2
> intel_rng: FWH not detected
> usb 1-2: configuration #2 chosen from 2 choices
> PCI: Setting latency timer of device 0000:00:1d.7 to 64
> ehci_hcd 0000:00:1d.7: EHCI Host Controller
> ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 3
> ehci_hcd 0000:00:1d.7: debug port 1
> PCI: cache line size of 128 is not supported by device 0000:00:1d.7
> ehci_hcd 0000:00:1d.7: irq 23, io mem 0xf0000000
> ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004
> usb 1-2: can't set config #2, error -84
> usb 1-2: USB disconnect, address 2
> usb usb3: configuration #1 chosen from 1 choice
> hub 3-0:1.0: USB hub found
> hub 3-0:1.0: 4 ports detected
> usb 1-2: new full speed USB device using uhci_hcd and address 3
> st: Version 20070203, fixed bufsize 32768, s/g segs 256
> usb 1-2: configuration #2 chosen from 2 choices
> program hwscan is using a deprecated SCSI ioctl, please convert it to SG_IO
> sd 1:0:0:0: Attached scsi generic sg0 type 0
> scsi 1:0:8:0: Attached scsi generic sg1 type 3
> usb 2-2: new full speed USB device using uhci_hcd and address 2
> usb 2-2: configuration #1 chosen from 1 choice


Judging from the log file of 2.6.5, there usb_new_device fails when it
call usb_get_device_descriptor.

In 2.6.22, hub_port_init() and usb_new_device() are invoked twice,the
first try fails and the second try got succeed.

Since from 2.6.10 we introduce a new USB device initialization scheme,
I feel maybe your device is incompatible with the old scheme and only
works against the new scheme.

Regards
Jason

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