Did you find a resolution to this issue? I have encountered a very similar issue with the ti_usb_3410_5052 and 2.6.28-r6 kernel in an embedded build of OpenEmbedded for operation of a Multitech GPRS modem.
Construct of ttyUSBx is fine. Connect is fine, but after closing the connection only an Input/Output error on that particular ttyUSBx. It follows the ttyUSBx even after removal of the device and if a different usb device is inserted. If I force creation of ttyUSBx+1, then a new connection will work until I close. Stewart Allen-3 wrote: > > Some more details, > > I've tried this on a Acer TravelMate 8200 and Dell XPS Laptops, running > the > same kernel versions and both give the same problems. > > I've also discovered if I force unload the usbserial module and then plug > the > dongle back in the gdbproxy initialises the dongle correctly, but you have > to > unplug and unload the ti_usb_3410_5052 and usbserial modules between each > run, which is a bit of a pain. > > This definitely seems like a bug in the usbserial subsystem in 2.6.28. > I'm > looking at the differences between the two versions of > `drivers/usb/serial/usb-serial.c` now. > > Still if anyone has ideas, they will be most welcome. > > -- > Regards, > Stewart Allen > allens...@gmail.com > > On Saturday 07 March 2009 11:08:18 Mark Lister wrote: >> try >> >> echo "2" > /sys/bus/usb/devices/2-1.1/bConfigurationValue >> >> change the path to match your system >> >> Needs a Wiki entry... >> >> Stewart Allen wrote: >> > Hi all, >> > >> > This is the problems I having... >> > >> > The usb dongle gets picked up by linux and the /dev/ttyUSB0 gets >> created. >> > I can start the msp430-gdbproxy and even connect and debug. >> Problems >> > start after I detach the msp430-gdb or close the proxy. I then start >> > getting the following error messages. >> > >> > debug: MSP430_Initialize() >> > error: msp430: Could not initialize device interface (1) >> > >> > Unplugging the dongle and replacing it also gives the above errors when >> > starting msp430-gdbproxy even though the /dev/ttyUSB0 is created. >> > >> > I then tried `cat /dev/ttyUSB0` and I get the following error >> > >> > cat: /dev/ttyUSB0: Input/output error >> > >> > There are no unusual errors in dmesg or in /var/log/messages >> > >> > It seems to crash the entire USB serial stack. Even plugging in a >> FTDI >> > USB serial dongle gives the same `cat` error. Unloading the >> > ti_usb_3410_5052 module, also has no effect. I have to restart the PC >> > to get it all working again. >> > >> > All this seems to happen on Gentoo kernel 2.6.28-tuxonice-r3 >> > >> > I've tried the dongle on Ubuntu 8.10 with kernel 2.6.27-11-generic and >> it >> > works perfectly, no errors with reconnecting or multiple runs of the >> > proxy. >> > >> > I've diff'ed the ti_usb_3410_5052.c and .h files between kernel >> > 2.6.28-tuxonice-r3 and 2.6.27-11-generic and there is no real >> difference >> > between the two versions. >> > >> > Anyone else having problems like this? Any solutions? >> >> --------------------------------------------------------------------------- >>--- Open Source Business Conference (OSBC), March 24-25, 2009, San >> Francisco, CA -OSBC tackles the biggest issue in open source: Open >> Sourcing >> the Enterprise -Strategies to boost innovation and cut costs with open >> source participation -Receive a $600 discount off the registration fee >> with >> the source code: SFAD http://p.sf.net/sfu/XcvMzF8H >> _______________________________________________ >> Mspgcc-users mailing list >> Mspgcc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/mspgcc-users > > ------------------------------------------------------------------------------ > Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, > CA > -OSBC tackles the biggest issue in open source: Open Sourcing the > Enterprise > -Strategies to boost innovation and cut costs with open source > participation > -Receive a $600 discount off the registration fee with the source code: > SFAD > http://p.sf.net/sfu/XcvMzF8H > _______________________________________________ > Mspgcc-users mailing list > Mspgcc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/mspgcc-users > > -- View this message in context: http://old.nabble.com/Issues-with-eZ430-and-kernel-2.6.28-tp22385517p33019331.html Sent from the MSP430 gcc - Users mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create new or port existing apps to sell to consumers worldwide. Explore the Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev _______________________________________________ Mspgcc-users mailing list Mspgcc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mspgcc-users
