Bug 79415 – kernel support for netmos 9835/9735 crippled since 2.6.9

• Product: Gentoo Linux
• Status: RESOLVED TEST-REQUEST

[Description Steven Brudenell 2005-01-24 19:50:45 UTC]

In kernel 2.6.9, a patch was added to parport_pc to support the parallel port on netmos 9835 and 9735 chipsets, which are found on combo parallel/serial pci cards. Support for these chips already existed in parport_serial prior to this. Since parport_serial depends on parport_pc, parport_pc always gets loaded first, with limited (parallel port only) support for these cards, and the complete (parallel+serial) functionality in parport_serial is superseded. The serial functionality of these cards does not work in either 2.6.9 or 2.6.10.

Reproducible: Always
Steps to Reproduce:
1. Obtain NetMos 9835 or 9735 board.
2. Compile linux 2.6.9 or 2.6.10 with support for parport_serial enabled (built-in or module, either way works).
3. Boot with this kernel.

Actual Results:  
Only the parallel port on this board is identified.

Expected Results:  
Both the parallel port and the serial ports (there are two on the 9835, which I
have) should be identified.

I have read of other people having an identical problem, with the same boards on
the same kernel version.
Removing support in parport_pc for these netmos boards produces the required
functionality.
Using 2.6.8.1 with the same configuration also works.

[Comment 1 Patrick Lauer 2005-01-25 01:49:13 UTC]

most likely WONTFIX / UPSTREAM I guess ...

[Comment 2 Daniel Drake (RETIRED) 2005-01-25 04:16:04 UTC]

Can you please try 2.6.11-rc2?

[Comment 3 Daniel Drake (RETIRED) 2005-02-09 07:57:31 UTC]

Please reopen when you test 2.6.11-rc3

[Comment 4 Steven Brudenell 2005-03-10 00:26:34 UTC]

Tried 2.6.11. Problem still exists.

[Comment 5 Daniel Drake (RETIRED) 2005-03-12 17:28:47 UTC]

Please file a bug for this at http://bugzilla.kernel.org and post the resultant URL here.

[Comment 6 Steven Brudenell 2005-03-13 09:18:35 UTC]

Done.

http://bugzilla.kernel.org/show_bug.cgi?id=4334

[Comment 7 Daniel Drake (RETIRED) 2005-04-01 01:25:07 UTC]

A fix is now available in Linus' tree, could you please apply these 2 patches to 2.6.11 in this order:

http://linux.bkbits.net:8080/linux-2.6/gnupatch@4239fab69YNpq9VuPBav49ahH2q9KA
http://linux.bkbits.net:8080/linux-2.6/gnupatch@4248d4312r_MDzERKgwoV7OXHM_MKw

If that solves the problem, I'll include them in the next release

[Comment 8 Daniel Drake (RETIRED) 2005-04-13 08:58:37 UTC]

Bump..please could you try those patches?

[Comment 9 Daniel Drake (RETIRED) 2005-04-28 09:32:31 UTC]

Closing due to inactivity. If you can confirm the fixes work I will add them to the tree.