On Wed, Apr 17, 2013 at 01:12:54PM +0200, Karsten Malcher wrote: > Hello Johan, > > Am 17.04.2013 11:35, schrieb Johan Hovold: > > You should, but note, that's userspace, or the line discipline asking > > for this, but we might have tty changes that have cleaned this up so we > > aren't so "chatty" anymore. > >> I attached the sources of the driver from the Debian kernel sources for both versions. > >> In the screenshot of K3Diff you can see that there are some > >> subroutines missing in the new driver? > >> It's not only missing debug output. > > As Greg mentioned, a lot of things have changed since 2.6.32, and the > > pl2303 is using a lot more of the generic usb-serial implementation than > > it used to, hence your diff. > > I understand. > > > If you can't run a bisect, what about testing some intermediate > > kernels? 2.6.35, 2.6.38 and 3.1 are good candidates. > > The problem is that i am not so familiar to compile the kernel from the sources. > It's no problem for me with ready packages and scripts within a distribution. > Your proposed versions are not existing for Debian or Ubuntu. Do you have access to any other pre-built kernels between 2.6.32 and 3.2? > > Also could your provide logs for a successful read on 2.6.32 and failed > > read on 3.2 when you have enabled debugging for usb-serial (e.g. > > modprobe usbserial debug=1) as well as pl2303? > > I have collected all informations in my bug report at debian: > http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=704242 > This tests and results are included. The logs there appear not to have debugging enabled in usb-serial core. Please post the logs with debugging enabled in both modules to this thread as well. > > Is write also broken by the way? > > No - that works perfect everywhere. And you said you had verified that there was data on the wire when read fails? Thanks, Johan -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
