BenH reported that there is some assign unassigned resource problem
in powerpc.
It turns out after
| commit 0c5be0cb0edfe3b5c4b62eac68aa2aa15ec681af
| Date: Thu Feb 23 19:23:29 2012 -0800
|
| PCI: Retry on IORESOURCE_IO type allocations
even the root bus does not have io port range, it will keep retrying
to realloc with mmio.
After checking the code, found that we bound io port and mmio fail
path together.
First patch fix the problem, that will not make mmio fall back to must-only
when only have io port fail with must+optional.
That is first patch.
During we found the fix for that problem, found that we can separate assign
unassigned resources to per root bus.
that will make the code simple, also could reuse it for hotadd path.
Besides that, "PCI: Enable pci bridge when it is needed" will delay pci
bridge enabling, that will kill another difference between booting path
and hotadd path.
-v4: split first patch into 4 patches per Bjorn.
-v5: drop two patches that will pass root bus resource mask after we found
simple and less intrusive way to fix the problem.
-v6: refreshed on top of v3.11-rc2
could get from
git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git for-pci-assign-unassigned
Thanks
Yinghai
Yinghai Lu (7):
PCI: Don't use temp bus for pci_bus_release_bridge_resources
PCI: Use pci_walk_bus to detect unassigned resources
PCI: Check pci bus address for unassigned res
PCI: Introduce enable_local to prepare per root bus handling
PCI: Split pci_assign_unassigned_resources to per root bus
PCI: Enable pci bridge when it is needed
PCI: Retry assign unassigned resources for hotadd root bus
arch/arm/kernel/bios32.c | 5 --
arch/m68k/platform/coldfire/pci.c | 1 -
arch/mips/pci/pci.c | 1 -
arch/sh/drivers/pci/pci.c | 1 -
drivers/acpi/pci_root.c | 5 +-
drivers/parisc/lba_pci.c | 1 -
drivers/pci/bus.c | 19 -----
drivers/pci/hotplug/acpiphp_glue.c | 1 -
drivers/pci/pci.c | 20 ++++++
drivers/pci/probe.c | 1 -
drivers/pci/setup-bus.c | 141 +++++++++++++++++++------------------
drivers/pcmcia/cardbus.c | 1 -
include/linux/pci.h | 2 +-
13 files changed, 95 insertions(+), 104 deletions(-)
--
1.8.1.4
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