Dear Olof:
Excuse me, Is all right now?
Best Regards,
Franko Fang
-----邮件原件-----
发件人: Olof Ermis [mailto:[email protected]]
发送时间: 2012年11月12日 23:01
收件人: Bjørn Mork
抄送: Fangxiaozhi (Franko); Aleksander Morgado; [email protected];
Tommy Cheng
主题: Re: 答复: MM: Non QMI Huawei modems without PPP support?
Hi
lsusb -t gives:
root@oloflinux:/sys/bus/usb/drivers/cdc_ncm# lsusb -t
2-6:1.1: No such file or directory
/: Bus 08.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/: Bus 07.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/: Bus 06.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/: Bus 05.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
|__ Port 1: Dev 2, If 0, Class=HID, Driver=usbhid, 1.5M
|__ Port 1: Dev 2, If 1, Class=HID, Driver=usbhid, 1.5M
|__ Port 2: Dev 3, If 0, Class=HID, Driver=usbhid, 1.5M
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci_hcd/6p, 480M
|__ Port 6: Dev 6, If 0, Class=vend., Driver=option, 480M
|__ Port 6: Dev 6, If 1, Class=vend., Driver=, 480M
|__ Port 6: Dev 6, If 2, Class=stor., Driver=usb-storage, 480M
|__ Port 6: Dev 6, If 3, Class=stor., Driver=usb-storage, 480M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci_hcd/6p, 480M
Maybe this strange
Port 6: Dev 6, If 1, Class=vend., Driver=, 480M
is the problem or? Some driver there with no name? That is 2-6:1.1 right?
I'll give the debugging a shot as well.
Cheers
Olof
2012/11/12 Bjørn Mork <[email protected]>:
> Olof Ermis <[email protected]> writes:
>
>> Update:
>>
>> When loading manually using
>>
>> modprobe -v cdc_ncm
>>
>> I get this in syslog:
>>
>> Nov 12 14:49:23 oloflinux kernel: [ 1840.329871] usb 2-6: bind()
>> failure Nov 12 14:49:23 oloflinux kernel: [ 1840.329900] usbcore:
>> registered new interface driver cdc_ncm
>>
>> So it looks like cdc_ncm somehow tried to attach the dongle there
>> (usb
>> 2-6) but failed.
>
> Yes. OK, then it makes sense again.
>
>
> We obviously overlooked something. But that can be fixed. We just
> need to find out where and why it fails. It worked for Tommy, which
> seemed likely when looking at the code, but reading code and trying to
> imagine the flow often fails. For me at least...
>
> Could you add a few extra debugging printk's throughout the
> cdc_ncm_bind() function? There are quite a few "goto error;" and "goto
> error2;". Could you replace each of these with something which makes
> it possible to pinpoint exactly which one we take? Something like
> this, but with a unique error message per goto would do:
>
> {
> dev_err(&intf->dev,"exit 1\n");
> goto error;
> }
>
>
>
>
> Bjørn
>
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