[openib-general] atomic_read in ib_unregister_mad_agent()

[Shirley Ma]

It's better to use semaphore instead of atomic_read to check the reference 
count 0 in wait_event() in ib_unregister_mad_agent(). 
Agree?

Thanks
Shirley Ma
IBM Linux Technology Center
15300 SW Koll Parkway
Beaverton, OR 97006-6063
Phone: (503) 578-7638
FAX:      (503) 578-3228

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