Have a check inside all individual operational state change functions
to check whether device is in same state, and if yes, then return
immediately.
Testing Done: Tested on DB3.5 platform
Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>