MHDDK broken on Linux kernel 4.0

[drobson]

One of the tools that ships with MHDDK is broken on new Linux kernels.

The problem is easy to reproduce:

cd nimhddk_linuxkernel/LinuxKernel/nirlpk

make

sudo make install

gives the following error:

nirlp: 4.0.0-040000-generic kernel not supported

Directly executing nirlp gives the same error. Older kernels (e.g. 3.13) don't have this issue.

Without this tool, none of the examples can even access the board.

This issue will presumably affect all new kernels. Since this tool is binary-only, a fix will have to come from NI.

NI, please provide a fix or workaround for this issue.

[JoeFriedchicken · Accepted solution]

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drobson wrote:
 Since this tool is binary-only, a fix will have to come from NI.

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The MHDDK is 100% source code, scripts, and Makefiles -- all editable text files.

The nirlp file is a bash script, and it includes a check for kernel versions that were tested with the DDK examples. The last time the kernel module was updated was during the Linux 3.6 window. You can change the script to allow for newer kernels, and since you were able to compile the module, it looks hopeful that the module will load and support your devices.

[drobson]

Oops, I should have checked if it was a bash script.

I can confirm that MHDDK is working well on 4.0.0-040000-generic after modifying the nirlp script:

if [ "$kernelMajor" == "2" -a "$kernelMinor" == "6" -o "$kernelMajor" == "3" -o "$kernelMajor" == "4" ]; then

Thanks very much for your prompt response!

-Drew