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** [tickets:#1031] PLM: active controller HE resets itself when first
instantiating its EE**
**Status:** accepted
**Milestone:** 4.5.0
**Created:** Thu Aug 28, 2014 07:32 PM UTC by Alex Jones
**Last Updated:** Thu Aug 28, 2014 07:32 PM UTC
**Owner:** Alex Jones
plms_ee_instantiate() resets the HE to which the EE belongs. But, this
function is only called if there are dependencies on the HE. It is never
called if there are no dependencies.
If the active controller blade (modeled as an HE) has HE dependencies (some
other FRUs on the board), this blade/HE will only be brought in-service when
the other HEs on which it depends are brought in-service. At this point,
plms_ee_instantiate() is called and the controller ends up resetting itself.
This is not good!
plms_ent_enable() is called in plms_move_dep_ent_to_insvc(). This function,
plms_ent_enable(), is not called if there are no dependencies, and hardware is
not inserted into the chassis. If the hardware is already present, and there
are no dependencies, plms_ent_enable() is not called, which means
plms_ee_instantiate is not called.
If the active controller blade/HE does not depend on any other HEs,
plms_ee_instantiate is never called, and so the blade can never reset itself.
In plms_ee_instantiate() we probably need to check whether or not we are about
to reset ourself, and not do it. We can safely assume that the EE is already
running (since our code is executing!), and that plmcd will communicate with
PLMS to set the EE states.
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