PROBLEM: (BCPM91GPF) (PATCH ID: OSF445-184)
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This patch fixes DS10/DS20 performance problems introduced with the i2c driver 
by using thread blocking, rather than event_timeout() and DELAY().


PROBLEM: (83991, 84114, 84146, 86642) (PATCH ID: OSF445-221)
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PROBLEM: 
i2c lock heirarchy violation