tree 8568a90b89c8a8d7319227ec72ea0000b1534287
parent 4e877a754d6a700cec0a02ff46e66e30b66f634f
author Matt Spinler <spinler@us.ibm.com> 1563829868 -0500
committer Matt Spinler <spinler@us.ibm.com> 1563890451 -0500

Don't try to read GPIOs when no device path

For certain PGOOD faults, the code may try to read a GPIO off of an IO
expander to further isolate the error.  If there was a problem with the
device driver detecting that IO expander, then the code was running down
a path where it would still try to read that IO expander, but using an
empty device path which would just generate extra error traces in the
journal.  Avoid this by checking for this empty path and then not
reading those GPIOs.

Change-Id: I40a3e0c13e392fa58d87f53c8911eb96c9cd7f2c
Signed-off-by: Matt Spinler <spinler@us.ibm.com>