Bug#704242: Driver for PL-2303 HX not working

[Johan Hovold <jhovold@gmail.com>]

On Thu, Apr 18, 2013 at 12:36:17PM +0200, Karsten Malcher wrote:
> Am 17.04.2013 15:13, schrieb Johan Hovold:
> > Can you try to reproduce this on a later kernel (e.g. 3.8) which uses
> > dynamic debugging?
> 
> I have compiled a 3.8.5 kernel now on Debian testing (wheezy).
> The result is the same as in 3.2.0 !
> I could receive only some of the first bytes after opening the port
> afterwards everything is lost without errors.

Can you generate a log where bytes are actually lost? Nothing seemed to
get lost in the previous log you posted.

> How can i enable the debugging in kernel 3.8.5?

Make sure debugfs is mounted:

	mount -t debugfs none /sys/kernel/debug

and then enable debugging:

	echo "module usbserial +p" >/sys/kernel/debug/dynamic_debug/control
	echo "module pl2303 +p" >/sys/kernel/debug/dynamic_debug/control

Johan