How to prevent a module from unloading when in used

[Abhishek Sharma]

Hi,
Is their some special reason for not using "rmmod" to unload module?
rmmod will remove only the module which it is told to remove.

Regards,
Abhishek Sharma

On Wednesday 16 July 2014 04:00 PM, Chetan Nanda wrote:
> Hi,
>
> I am  facing an issues with module unloading,
> I have two modules say A, B
>
> A depends on B, so B is automatically loaded when A is loaded.
> B module is also directly being used by the user side code via misc 
> interface.
>
> Now when I am unloading module A, via "modprobe -r A" it is also 
> unloading the module B which is being used by the application and 
> resulting in the kernel crash.
>
> Also, lsmod ouput shows driver B is not used by anybody. Seems "Used 
> By" of lsmod output is not getting updated.
>
> How to prevent unloading of module B in used. When unloading module 
> 'A' via modprobe -r
>
> Thanks,
> Chetan Nanda
>
>
>
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