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Groups > linux.kernel > #1413612

[PATCH v12 14/15] PCI: Only treat non-pref mmio64 as pref if host bridge has mmio64

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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(-)

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;
-- 
2.8.3

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Thread

[PATCH v12 00/15] PCI: Fixup for 64bit resource with sparc Yinghai Lu <yinghai@kernel.org> - 2016-06-04 02:10 +0200
  [PATCH v12 15/15] PCI: Restore pref MMIO allocation logic for host bridge without mmio64 Yinghai Lu <yinghai@kernel.org> - 2016-06-04 02:10 +0200
  [PATCH v12 09/15] powerpc/PCI: Add IORESOURCE_MEM_64 for 64-bit resource in OF parsing Yinghai Lu <yinghai@kernel.org> - 2016-06-04 02:10 +0200
  [PATCH v12 05/15] sparc/PCI: Reserve legacy mmio after PCI mmio Yinghai Lu <yinghai@kernel.org> - 2016-06-04 02:20 +0200
  [PATCH v12 02/15] PCI: Let pci_mmap_page_range() take resource address Yinghai Lu <yinghai@kernel.org> - 2016-06-04 02:20 +0200
  [PATCH v12 04/15] PCI: Add pci_find_bus_resource() Yinghai Lu <yinghai@kernel.org> - 2016-06-04 02:20 +0200
  [PATCH v12 14/15] PCI: Only treat non-pref mmio64 as pref if host bridge has mmio64 Yinghai Lu <yinghai@kernel.org> - 2016-06-04 02:20 +0200
  [PATCH v12 12/15] PCI: Only treat non-pref mmio64 as pref if all bridges have MEM_64 Yinghai Lu <yinghai@kernel.org> - 2016-06-04 02:20 +0200
  [PATCH v12 07/15] sparc/PCI: Keep resource idx order with bridge register number Yinghai Lu <yinghai@kernel.org> - 2016-06-04 02:30 +0200
  [PATCH v12 08/15] powerpc/PCI: Keep resource idx order with bridge register number Yinghai Lu <yinghai@kernel.org> - 2016-06-04 03:10 +0200

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