qemu trouble...

Giles Jones giles.jones at zen.co.uk
Thu Jul 26 01:01:47 CEST 2007

On 25 Jul 2007, at 23:42, John Seghers wrote:

> Did you run "modprobe gadgetfs default_uid=<your uid>" before  
> running QEMU?
> I get continual kernel ring messages (dmesg, also reported in  
> syslog) of:
> dummy_udc dummy_udc: dequeued req deb73c40 from ep-c, len 4096, buf  
> xxxxxxxx
> Additionally, there are three lines output from QEMU's stdout/err:
> s3c_udc_handle_packet: EP0 overrun
> pcf_write: automatic Fast-charge enabled
> s3c_udc_handle_packet: EP0 overrun
> However, if I go ahead and configure the USB interface and connect  
> via ssh,
> it works:
> ifconfig usb0 inet netmask
> ssh root at
> - John
> PS: I found that the error output someone else was quoting,
> "Warning: could not find USB gadgetfs" near the beginning of QEMU's  
> run is
> due to not having mounted /dev/gadget.

It also says can't find gadgetfs if you don't have it specified in  
the config.h file before compiling qemu.

Interesting that the IP you use for usb0 is, then ssh  
into 202. I thought this was a typo then considered that it was  

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