Kernel driver pl2303.ko for kernel 2.6.33.2

[JeroenSt80]

I tried everything to get my usb to serial converter to work, but I can't find a good kernel driver for is.

One driver gives an error when opening /dev/usb/ttyUSB0 and the otherone causes a kernel crash when opening /dev/usb/ttyUSB0.

The repository fails because the directory http://ipkg.nslu2-linux.org/feeds/optware/tsx19 has vanished.

How do I get a good kernel driver for this!? Is there a way to compile this driver myself (tutorial) ???

[CheechRockwizard]

I have exactly the same problem on my TS-412...

The version of pl2303.ko I have was compiled under a previous firmware/kernel release, but (surprisingly) doesn't complain when I insmod, and dmesg says all the right things:

>>>
[ 2125.020000] usbcore: registered new interface driver usbserial
[ 2125.020000] usbserial: USB Serial Driver core
[ 2136.240000] USB Serial support registered for pl2303
[ 2136.240000] pl2303 1-1.2:1.0: pl2303 converter detected
[ 2136.260000] usb 1-1.2: pl2303 converter now attached to ttyUSB0
[ 2136.260000] pl2303 1-1.3:1.0: pl2303 converter detected
[ 2136.280000] usb 1-1.3: pl2303 converter now attached to ttyUSB1
[ 2136.280000] usbcore: registered new interface driver pl2303
[ 2136.280000] pl2303: Prolific PL2303 USB to serial adaptor driver
<<<<

However, when I open the USB serial port I have a kernel crash and it reboots the NAS.

I have tried many (possibly all) the threads on this subject with mixed success.
The most recent attempt was to "ipkg install kernel-module-pl2303", but it's not in the repo
(//ipkg.nslu2-linux.org/feeds/optware/cs08q1armel/cross/unstable//Packages)

[ref: viewtopic.php?f=97&t=10739&start=30]

This pl2303 chipset is widely used by many people, and I *have* had it working fine under previous kernel versions (when compiled by hand) so I don't understand why QNAP don't include it as a default module. Or at least release the kernel source to give users a fighting chance of building their own.

It would be nice if someone from QNAP could comment on why support for this chipset is proving so hard to provide...

Should have gone for a Synology NAS instead... Never mind.

[doktornotor]

Or at least release the kernel source to give users a fighting chance of building their own.

http://www.qnap.com/en/index.php?lang=en&sn=856

Should have gone for a Synology NAS instead... Never mind.

Yeah, their released kernel sources failed to compile last time I tried.

[CheechRockwizard]

Nice one doktornotor - will have a fiddle and see what I can come up with...

Yes, the Synology comment was facetious ;o)

[JeroenSt80]

+1...

[JeroenSt80]

Maybe install debian linux on the NAS... But I like the qnap web interface making things easier (altough you have to go to command line for advanced settings)..

[CheechRockwizard]

I've given up on rolling my own module and will wait for a vendor supported solution, but have a workaround:

I reverted to my previous firmware version (from 3.6.1 to 3.5.2) and used the pl2303.ko file from this topic [http://forum.qnap.com/viewtopic.php?p=217282#p217282]

The process for this was to:
1) download firmware file and unzip [http://download.qnap.com/Storage/TS-412TurboNAS/TS-412_3.5.2_Build1126.zip]
2) install QFinder and install [http://download.qnap.com/Storage/Utility/Finder-3.5.0.209.zip]
3) tools->firmware update, and pointed at the TS-412_3.5.2_Build1126.img file from the zip file in (1)

This approach was recommended to me by the QNAP support team.

I was a bit reluctant to do this, for fear of losing all the data on my NAS, but this process did not affect my data at all.

Now I can control my X10 network from my 'phone again, and log all my CurrentCost output

Note that this is for the TS-412. But may be worth a try on other NAS versions, if you can find the firmware img file.

Hope this helps somebody!

[JeroenSt80]

That's not a real solution for me. I'm using the VPN functionality on the newest firmare... QNAP should provide a driver and/or a new kernel!!!

Why is it not possible to compile pl2303.ko for the newest firmware??? Is there something missing in the kernel why it is so hard to get it working?!

QNAP please answer and give us a decent solution!!

[JeroenSt80]

See also viewtopic.php?f=24&t=18666

[schumaku]

Pleae be aware this is a community forum, not a formal contact channel to QNAP...

[JeroenSt80]

See also viewtopic.php?f=85&t=33135&start=15 (I've compiled a new kernel which should support the pl2303 serial adapter (not tested yet)).

[tuxmarc]

I was able to get the pl2303.ko working together with firmware 3.7.0 by compiling the module within the GPL sources given with firmware 3.6.x. Do not use the vanilla kernel sources, just use the GPL kernel source given by QNAP.

cheers

[Dionysus]

How did you get the QNAP kernel source to compile. When I tried it seems there are some SCSI bits missing.

[ctr]

You have to use their kernel config (copy it as .config into the linux tree before activating pl2303 support). I had the same problem and recompiling fixed the problem (coming from 3.5 to 3.7). I was also using a self-compiled version on 3.5 and not a binary from the forum so something must have changed in between although its the same kernel version...

[ben_31]

I managed to compile it and it seems to work well with the source located in http://downloads.sourceforge.net/projec ... 7.2.tar.gz.
I do not have anymore the "pl2303_open - failed submitting read urb, error -22" error.