opening linux char device file in user thread.

hai,

I have written a daemon which is running in user space, will send some data periodically to kernel space. This I have done with the help of a device file.

It is working, but I want to apply threads mechanism in that daemon. But when I split that daemon functionality into a thread and a original process. I am unable to open the device file. This is happening in both places(either in thread or original process).

The device is opening  when threading is not there.

Can anybody suggest me?

Regards,
P.Manohar.

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