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[v6,3/7] PCI: Check pci bus address for unassigned res

Message ID 1374529038-14311-4-git-send-email-yinghai@kernel.org (mailing list archive)
State New, archived
Delegated to: Bjorn Helgaas
Headers show

Commit Message

Yinghai Lu July 22, 2013, 9:37 p.m. UTC 
We should compare res->start with root bus window offset.
Otherwise will have problem with arch that support hostbridge
resource offset.

BenH pointed out that during reviewing patchset that separate
assign unassigned to per root buses.

According to Bjorn, have it in separated patch.

Use pcibios_resource_to_bus to get region at first, and check
region.start instead.

Suggested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
 drivers/pci/setup-bus.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index ec93aa0..87687a5 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -1367,9 +1367,14 @@  static int __init check_unassigned_resources(struct pci_dev *dev, void *data)
 
 	for (i = PCI_IOV_RESOURCES; i <= PCI_IOV_RESOURCE_END; i++) {
 		struct resource *r = &dev->resource[i];
+		struct pci_bus_region region;
 
 		/* Not assigned, or rejected by kernel ? */
-		if (r->flags && !r->start) {
+		if (!r->flags)
+			continue;
+
+		pcibios_resource_to_bus(dev, &region, r);
+		if (!region.start) {
 			(*unassigned)++;
 			return 1; /* return early from pci_walk_bus */
 		}