[PATCH v2 36/49] PCI: Only treat non-pef mmio64 as pref if host-bridge has_mem64

Yinghai Lu
2015-07-14T22:56:03Z

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>
---
drivers/pci/setup-bus.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 8a8e5a7..37d5a48 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -1041,7 +1041,7 @@ 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 && !(bus->self->resource[PCI_BRIDGE_RESOURCES + 2].flags &
IORESOURCE_MEM_64))
--
1.8.4.5