IOCTL

[John-Mark Gurney]

kumara rathnavel wrote this message on Wed, Aug 26, 2015 at 14:54 +0530:
> I have written a driver program for character device and I use ioctl from
> user space to communicate with the device. I am able to open the device and
> execute the command for the respective ioctl but the address the I am
> sending from the user space is different and the ioctl reutuns me a BAD
> ADDRESS....

Do you know if your ioctl is called or not?  Also, what is the code that
you are using to call the ioctl?  Are you passing it a valid userland
pointer?

-- 
  John-Mark Gurney				Voice: +1 415 225 5579

     "All that I will do, has been done, All that I have, has not."