tree 74ad5443ceaecf47d67cc0ac8d3a5fa2b62f2c3d
parent 1115153d44039b0a7ef38d8648773a29c5450908
author Brandon Wyman <bjwyman@gmail.com> 1605038502 -0600
committer Brandon Wyman <bjwyman@gmail.com> 1606176649 -0600

psu-ng: Updates to allow PSU missing on startup

If the power supply is missing when the application starts up, the
created PMBus interface will log an INFO message about being unable to
read any of the sysfs files. Allow that informational message to occur,
but in the inventoryChange() interface, when the power supply goes
present, be sure to call the findHwmonDir() function to update the
directory/file changes that may occur when the device driver binds.

Tested:
    Use simulator to verify no changes when both present and chassison.
    Use simulator to mark 2nd PSU missing, restart application, mark 2nd
    PSU as present and verify no PSU communication problems.
    Use simulator to mark 1st PSU missing, restart application, mark 1st
    PSU present and verify no PSU communication problems.
    Use simulator to chassison with PSU missing, then change PSU
    present, verify no errors.
    Use simulator to chassison with PSUs present, mark PSU missing, then
    PSU present, verify no errors.

Signed-off-by: Brandon Wyman <bjwyman@gmail.com>
Change-Id: Iba1c8296167519e7285eb680ab067bfb6046b4c7