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| author | Yuji Shimada <shimada-yxb@necst.nec.co.jp> | 2009-04-03 11:41:46 +0400 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-04-06 22:25:06 +0400 |
| commit | 296ccb086dfb89b5b8d73ef08c795ffdff12a597 (patch) | |
| tree | 8c4ef0f0271e448b6843811a1bcded8c47c005a1 /drivers/pci/setup-bus.c | |
| parent | 7eb93b175d4de9438a4b0af3a94a112cb5266944 (diff) | |
| download | linux-296ccb086dfb89b5b8d73ef08c795ffdff12a597.tar.xz | |
PCI: Setup disabled bridges even if buses are added
This patch sets up disabled bridges even if buses have already been
added.
pci_assign_unassigned_resources is called after buses are added.
pci_assign_unassigned_resources calls pci_bus_assign_resources.
pci_bus_assign_resources calls pci_setup_bridge to configure BARs of
bridges.
Currently pci_setup_bridge returns immediately if the bus have already
been added. So pci_assign_unassigned_resources can't configure BARs of
bridges that were added in a disabled state; this patch fixes the issue.
On logical hot-add, we need to prevent the kernel from re-initializing
bridges that have already been initialized. To achieve this,
pci_setup_bridge returns immediately if the bridge have already been
enabled.
We don't need to check whether the specified bus is a root bus or not.
pci_setup_bridge is not called on a root bus, because a root bus does
not have a bridge.
The patch adds a new helper function, pci_is_enabled. I made the
function name similar to pci_is_managed. The codes which use
enable_cnt directly are changed to use pci_is_enabled.
Acked-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Yuji Shimada <shimada-yxb@necst.nec.co.jp>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/setup-bus.c')
| -rw-r--r-- | drivers/pci/setup-bus.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index 334285a8e237..8d9da9d30a61 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -144,7 +144,7 @@ static void pci_setup_bridge(struct pci_bus *bus) struct pci_bus_region region; u32 l, bu, lu, io_upper16; - if (!pci_is_root_bus(bus) && bus->is_added) + if (pci_is_enabled(bridge)) return; dev_info(&bridge->dev, "PCI bridge, secondary bus %04x:%02x\n", |