Hi,

I have a general question about drivers: is it necessary or good practice to 
put locking/synchronization in functions used to manipulate a device? In 
other words, is it possible or will it be possible in the future for two or 
more different threads of control (this actually includes two or more 
seperate processes as well) to attempt to manipulate or use the services of 
a single device? If so, what facilities does the kernel provide for this?

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