On Wed, 12 Jan 2005, Mick Cornut wrote:

>     Hi everybody,
> 
> We are currently working with uClinux, kernel 2.4.26-uc1
> I've imported the USB serial adapter console feature from the kernel 2.5.75,
> and after some changes in function's names and prototypes, it compiles
> successfully... the problem is, even after specifying the new console to the
> kernel parameter like this:
> "console=/dev/ttyUSB0,115200"
> the USB enumeration process is not fast enough, and the kernel tries to open
> the console (and therefore fails) before this one has been registered by the
> usb-serial driver...
> 
> I was wondering if someone has an idea to resolve this issue, since the
> major kernel console exmaple I have are all based on real serial port: this
> case is specific to USB, due to the enumeration process   :-(

There have been patches posted in the past to permit booting with the root
filesystem on a USB disk, which involves much the same problem as you're
facing.  Here's a link you can follow:

http://marc.theaimsgroup.com/?l=linux-kernel&m=107664549416050&w=2

Alan Stern



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