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[v13,15/16] PCI: Only treat non-pref mmio64 as pref if host bridge has mmio64

Message ID 20160618022501.15648-16-yinghai@kernel.org (mailing list archive)
State New, archived
Delegated to: Bjorn Helgaas
Headers show

Commit Message

Yinghai Lu June 18, 2016, 2:25 a.m. UTC 
If host bridge does not have mmio64 above 4G, We don't need to
treat device non-pref mmio64 as as pref mmio64.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Tested-by: Khalid Aziz <khalid.aziz@oracle.com>
---
 drivers/pci/setup-bus.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index ffb1941..9404032 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -741,7 +741,7 @@  int pci_claim_bridge_resource(struct pci_dev *bridge, int i)
 static bool pci_up_path_over_pref_mem64(struct pci_bus *bus)
 {
 	if (pci_is_root_bus(bus))
-		return true;
+		return to_pci_host_bridge(bus->bridge)->has_mem64;
 
 	if (bus->self) {
 		int i;