PCI: Restore PCI expansion ROM P2P prefetch window creation

Restore PCI expansion ROM P2P prefetch window creation.

This patch reverts previous "Avoid creating P2P prefetch
window for expansion ROMs" change due to regressions that
were spotted on some systems.

Signed-off-by: Gary Hade <garyhade@us.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index c2f8a78c894c180dbf838fbce8cf2d0c4212057f..2f75d695eed767fe9c999edd464370963aa910c7 100644 (file)
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -276,7 +276,8 @@ static void pci_read_bases(struct pci_dev *dev, unsigned int howmany, int rom)
                        sz = pci_size(l, sz, (u32)PCI_ROM_ADDRESS_MASK);
                        if (sz) {
                                res->flags = (l & IORESOURCE_ROM_ENABLE) |
-                                 IORESOURCE_MEM | IORESOURCE_READONLY;
+                                 IORESOURCE_MEM | IORESOURCE_PREFETCH |
+                                 IORESOURCE_READONLY | IORESOURCE_CACHEABLE;
                                res->start = l & PCI_ROM_ADDRESS_MASK;
                                res->end = res->start + (unsigned long) sz;
                        }