To properly fix PCI hotplug, it's useful to be able to make
the fixup passes on all devices whether they were just hot
plugged or already there.
However, pcibios_allocate_bus_resources() wouldn't cope well
with being called twice for a given bus. This patch makes it
ignore resources that have already been allocated, along with
adding a bit of debug output.
Signed-off-by: Benjamin Herrenschmidt <[EMAIL PROTECTED]>
---
arch/powerpc/kernel/pci-common.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- linux-work.orig/arch/powerpc/kernel/pci-common.c 2008-10-28
14:04:45.000000000 +1100
+++ linux-work/arch/powerpc/kernel/pci-common.c 2008-10-28 14:04:57.000000000
+1100
@@ -1245,9 +1245,12 @@ static void pcibios_allocate_bus_resourc
int i;
struct resource *res, *pr;
+ pr_debug("PCI: Allocating bus resources for %04x:%02x...\n",
+ pci_domain_nr(bus), bus->number);
+
for (i = 0; i < PCI_BUS_NUM_RESOURCES; ++i) {
if ((res = bus->resource[i]) == NULL || !res->flags
- || res->start > res->end)
+ || res->start > res->end || res->parent)
continue;
if (bus->parent == NULL)
pr = (res->flags & IORESOURCE_IO) ?
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