tree 54df15bac84bc9cb30e918f9d39bcff9ee6fc066
parent 0892c3fbb5a984554f576489ab57e70fb46a127d
author Brandon Kim <brandonkim@google.com> 1561058304 -0700
committer Brandon Kim <brandonkim@google.com> 1562798851 -0700

sensor: Add UPDATE_FUNCTIONAL_ON_FAIL and its behavior

Add the build switch UPDATE_FUNCTIONAL_ON_FAIL. When enabled, sensor
read failures will not exit the mainloop. Instead, mainloop will update
the Functional property and skip the read of that sensor.

This will skip the "Remove RCs" check during value interface creation in
MainLoop::getObject. However, it will perform the "Remove RCs" checks
during MainLoop::read.

Tested: I was able to use busctl to read the Functional property of a
custom driver to test with UPDATE_FUNCTIONAL_ON_FAIL defined.
1. Negative values were reported, Functional was true
2. Sensor reporting errors had stale values, Functional was set to false

Resolves: openbmc/phosphor-hwmon#10
Signed-off-by: Brandon Kim <brandonkim@google.com>
Change-Id: I0984dad12250e9587ec36de2f9212de0b0e1cda6