tree 3437173284dff5d626a944be0215c1aeebc1e4df
parent 223d96fc3249b0ffdc30bf77fd90c93f857e9a6e
author Yinghai Lu <yinghai@kernel.org> 1374529034 -0700
committer Bjorn Helgaas <bhelgaas@google.com> 1374777302 -0600

PCI: Turn on reallocation for unassigned resources with host bridge offset

Previously we did not turn on automatic PCI resource reallocation for
unassigned IOV resources behind a host bridge with address offset.  This
patch fixes that bug.

The intent was that "!r->start" would check for a BAR containing zero.  But
that check is incorrect for host bridges that apply an offset, because in
that case the resource address is not the same as the bus address.

This patch fixes that by converting the resource address back to a bus
address before checking for zero.

[bhelgaas: changelog]
Suggested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>