Hi I just tested it on my Ubutu 13.04 (default kernel) , it is working . [30971.042909] Demonstrating module parameters [30971.042913] =============================== [30971.042915] myshort is a short integer: 1 [30971.042916] myint is an integer: 420 [30971.042918] mylong is a long integer: 9999 [30971.042919] mystring is a string: blah [30971.042921] myintArray[0] = -1 [30971.042922] myintArray[1] = -1 [30971.042923] got 0 arguments for myintArray. [30985.316843] Goodbye... [30985.316847] =============================== [31009.307672] Demonstrating module parameters [31009.307675] =============================== [31009.307676] myshort is a short integer: 1 [31009.307677] myint is an integer: 420 [31009.307678] mylong is a long integer: 9999 [31009.307678] mystring is a string: abcd [31009.307679] myintArray[0] = -1 [31009.307680] myintArray[1] = -1 [31009.307680] got 0 arguments for myintArray. [31020.217402] Goodbye... [31020.217407] =============================== [31027.604150] Demonstrating module parameters [31027.604153] =============================== [31027.604155] myshort is a short integer: 1 [31027.604157] myint is an integer: 420 [31027.604159] mylong is a long integer: 9999 [31027.604160] mystring is a string: vectordefefe [31027.604162] myintArray[0] = -1 [31027.604163] myintArray[1] = -1 [31027.604164] got 0 arguments for myintArray. sudip@sudip-PC:~/modules$ uname -a Linux sudip-PC 3.8.0-19-generic #29-Ubuntu SMP Wed Apr 17 18:16:28 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux sudip@sudip-PC:~/modules$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 13.04 Release: 13.04 Codename: raring Regards Sudip On Fri, Sep 6, 2013 at 6:40 PM, Sudip Mukherjee <sudipm.mukherjee@gmail.com>wrote:

Hi I just tested it on my Ubutu 13.04 (default kernel) , it is working .

[30971.042909] Demonstrating module parameters [30971.042913] =============================== [30971.042915] myshort is a short integer: 1 [30971.042916] myint is an integer: 420 [30971.042918] mylong is a long integer: 9999 [30971.042919] mystring is a string: blah [30971.042921] myintArray[0] = -1 [30971.042922] myintArray[1] = -1 [30971.042923] got 0 arguments for myintArray. [30985.316843] Goodbye... [30985.316847] =============================== [31009.307672] Demonstrating module parameters [31009.307675] =============================== [31009.307676] myshort is a short integer: 1 [31009.307677] myint is an integer: 420 [31009.307678] mylong is a long integer: 9999 [31009.307678] mystring is a string: abcd [31009.307679] myintArray[0] = -1 [31009.307680] myintArray[1] = -1 [31009.307680] got 0 arguments for myintArray. [31020.217402] Goodbye... [31020.217407] =============================== [31027.604150] Demonstrating module parameters [31027.604153] =============================== [31027.604155] myshort is a short integer: 1 [31027.604157] myint is an integer: 420 [31027.604159] mylong is a long integer: 9999 [31027.604160] mystring is a string: vectordefefe [31027.604162] myintArray[0] = -1 [31027.604163] myintArray[1] = -1 [31027.604164] got 0 arguments for myintArray. sudip@sudip-PC:~/modules$ uname -a Linux sudip-PC 3.8.0-19-generic #29-Ubuntu SMP Wed Apr 17 18:16:28 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux sudip@sudip-PC:~/modules$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 13.04 Release: 13.04 Codename: raring

Regards Sudip

On Fri, Sep 6, 2013 at 4:47 PM, <binoy.jayan@wipro.com> wrote:

...

Hi Srinivas,

Thank you for the inputs. The modules works fine with the kernels that come with Ubuntu 10.04, 11.04, 12.04 and 12.10. But, we are supporting a product for every latest Ubuntu versions. So, I need to make it work with the kernel which comes with the distro alone. So I cannot use a custom kernel from kernel.org.

Regards, *Binoy Jayan*

------------------------------ *From:* Srinivas Ganji [srinivasganji.kernel@gmail.com] *Sent:* Friday, September 06, 2013 4:34 PM

*To:* Binoy Jayan (WT01 - Manufacturing & Hi Tech) *Cc:* kernelnewbies@kernelnewbies.org *Subject:* Re: module_param does not work in Ubuntu 13.10 - Kernel 3.10.0-4

I have also tested, build KO file using your C file, on my kernel and it is working fine. The kernel version is 3.2.11

Why don't you try any other kernel version and see whether you are getting same error or not? I guess, it works.

Regards, Srinivas G

On Fri, Sep 6, 2013 at 10:22 AM, <binoy.jayan@wipro.com> wrote:

...

Hi all,

I use the kernel version "3.10.0-4" that came with Ubuntu distribution. When I compile the example module I got from LKMPG (hello-5.c) and try to load the driver by passing the module with the following command, it gives the following error:

# insmod parameter.ko mystring="bebop" Error: could not insert module parameter.ko: Unknown symbol in module

Error in dmesg:

[ 3687.132110] parameter: Unknown parameter `mystring'

However, if I insert the module without any parameters, it gets inserted just fine.

# insmod parameter.ko

I am attaching the source code for reference. Kindly let me know what could be done.

Thanks, Binoy

Regards, Binoy Jayan WIPRO TECHNOLOGIES | Electronic City 5 | Bangalore | Mob: +91-9742870916, +91-9745783048

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