tree 4f66a75e648e9909b82a8f4bf6a119c149bc9a9f
parent 9723c25f99aff0451cfe6392e1b9fdd99d0bf9f0
author Tyrel Datwyler <tyreld@linux.ibm.com> 1573449692 -0600
committer Michael Ellerman <mpe@ellerman.id.au> 1573624677 +1100

PCI: rpaphp: Don't rely on firmware feature to imply drc-info support

In the event that the partition is migrated to a platform with older
firmware that doesn't support the ibm,drc-info property the device
tree is modified to remove the ibm,drc-info property and replace it
with the older style ibm,drc-* properties for types, names, indexes,
and power-domains. One of the requirements of the drc-info firmware
feature is that the client is able to handle both the new property,
and old style properties at runtime. Therefore we can't rely on the
firmware feature alone to dictate which property is currently
present in the device tree.

Fix this short coming by checking explicitly for the ibm,drc-info
property, and falling back to the older ibm,drc-* properties if it
doesn't exist.

Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1573449697-5448-6-git-send-email-tyreld@linux.ibm.com