On Thu, 2 Sep 2004, Titou wrote:

> Hi, 
> Sorry for my previous message about USB sniffing : i solved my problem !
> I got a cellphone : Motorola V220 with a modem inside. I wanted connect it to 
> download / upload datas and informations and after a windows sniffing, i saw 
> it was done by AT commands.
> But when i connected my phone under linux, i got this error message :
> 
> Sep  2 01:04:21 antimony kernel: usb 1-1: new full speed USB device using 
> address 3
> Sep  2 01:04:21 antimony kernel: usb 1-1: device not accepting address 3, 
> error -71
> 
> However, sometimes, i got another message : 
> Sep  2 01:16:07 antimony kernel: usb 1-1: new full speed USB device using 
> address 10
> Sep  2 01:16:07 antimony kernel: cdc_acm 1-1:1.0: ttyACM0: USB ACM device
>  and with a terminal i can send AT commands to my cellphone and it answer me 
> without any problems.
> 
> About the error,i think it's the timeout which is too short ?

The timeouts follow the values in the USB specification.  But if you want 
to experiment with increasing the timeout, you can edit 
drivers/usb/core/hub.c.  Find HUB_DEBOUNCE_STABLE and increase it from 100 
milliseconds to whatever you want.

Alan Stern



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