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| author |   Yinghai Lu <yinghai@kernel.org> | 2012-01-21 02:08:22 -0800 |
|---|---|---|
| committer |   Jesse Barnes <jbarnes@virtuousgeek.org> | 2012-02-14 08:44:53 -0800 |
| commit | 2f320521a0d2d11fb857be09d05e2fbbf3ef8c13 (patch) | |
| tree | 9b8d91f3d64f383405511c33fd4d9c5d4aaa20c2 /drivers/pci/pci-sysfs.c | |
| parent | PCI: Use add_list in pcie hotplug path. (diff) | |
| download | linux-dev-2f320521a0d2d11fb857be09d05e2fbbf3ef8c13.tar.xz linux-dev-2f320521a0d2d11fb857be09d05e2fbbf3ef8c13.zip | |
PCI: Make rescan bus increase bridge resource size if needed
Current rescan will not touch bridge MMIO and IO.
Try to reuse pci_assign_unassigned_bridge_resources(bridge) to update bridge
resources, if child devices need more resources.
Only do that for bridges whose children are all removed already; i.e. don't
release resources that could already be in use by drivers on child devices.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/pci-sysfs.c')
| -rw-r--r-- | drivers/pci/pci-sysfs.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index a3cd8cad532a..d9723039e99a 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -366,7 +366,10 @@ dev_bus_rescan_store(struct device *dev, struct device_attribute *attr, if (val) { mutex_lock(&pci_remove_rescan_mutex); - pci_rescan_bus(bus); + if (!pci_is_root_bus(bus) && list_empty(&bus->devices)) + pci_rescan_bus_bridge_resize(bus->self); + else + pci_rescan_bus(bus); mutex_unlock(&pci_remove_rescan_mutex); } return count; |