Driver

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Hi all...
I'm developing a serial mouse driver and I would like to know how can
I do to associate a driver with the device. I used the register_chrdev
function, but when I tried to issue the "cat /dev/mymouse"  command, I
got a error message saying that device can't be accessed by that
command. (the module is already loaded,
The interrupt and open function of the driver are never invoked.
Could anybody help me, please?

Thanks.

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