Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8fa5913d54f3b1e09948e6a0db34da887e05ff1f
Commit: 8fa5913d54f3b1e09948e6a0db34da887e05ff1f
Parent: ecb3908046ce9ce7feb44e2c2cf77ccdbe231f70
Author: Gary Hade <[EMAIL PROTECTED]>
AuthorDate: Wed Oct 3 15:55:51 2007 -0700
Committer: Greg Kroah-Hartman <[EMAIL PROTECTED]>
CommitDate: Fri Oct 12 15:03:17 2007 -0700
PCI: remove transparent bridge sizing
Remove transparent bridge sizing.
Due to code in pci_read_bridge_bases() [drivers/pci/probe.c] the child
bus of a transparent bridge already has access to the parent bus
resources so transparent bridge sizing appears unnecessary. The bridge
sizing includes alignment and granularity adjustments that can cause
significantly more memory to be reserved from the parant bus than
required by devices on the child bus and allotted by _CRS.
Signed-off-by: Gary Hade <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
drivers/pci/setup-bus.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 5e5191e..401e03c 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -472,7 +472,12 @@ void pci_bus_size_bridges(struct pci_bus *bus)
break;
case PCI_CLASS_BRIDGE_PCI:
+ /* don't size subtractive decoding (transparent)
+ * PCI-to-PCI bridges */
+ if (bus->self->transparent)
+ break;
pci_bridge_check_ranges(bus);
+ /* fall through */
default:
pbus_size_io(bus);
/* If the bridge supports prefetchable range, size it
-
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