diff options
| author | Alex Chiang <achiang@hp.com> | 2008-12-01 13:09:19 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-12-05 10:55:16 -0800 |
| commit | 7701e9a5cadf9ca09d7f51a7c8e4bc7bb7695839 (patch) | |
| tree | cd079014468b960f3a7c083ce3b4ee529bee2438 /include | |
| parent | 381e99c1c801ff56db235120043bf327f32a25dd (diff) | |
PCI: update pci_create_slot() to take a 'hotplug' param
commit 828f37683e6d3ab5912989df0d04201db7ad798e upstream.
Slot detection drivers can co-exist with hotplug drivers. The names
of the detected/claimed slots may be different depending on module
load order.
For legacy reasons, we need to allow hotplug drivers to override
the slot name if a detection driver is loaded first (and they find
the same slots).
Creating and overriding slot names should be an atomic operation,
otherwise you get a locking nightmare as various drivers race to
call pci_create_slot().
pci_create_slot() is already serialized by grabbing the pci_bus_sem.
We update the API and add a 'hotplug' param, which is:
set if the caller is a hotplug driver
NULL if the caller is a detection driver
pci_create_slot() does not actually use the 'hotplug' parameter in this
patch. A later patch will add the logic that uses it.
Cc: kristen.c.accardi@intel.com
Cc: matthew@wil.cx
Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/pci.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index 98dc6243a70..86ed5f96009 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -509,7 +509,8 @@ struct pci_bus *pci_create_bus(struct device *parent, int bus, struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, int busnr); struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr, - const char *name); + const char *name, + struct hotplug_slot *hotplug); void pci_destroy_slot(struct pci_slot *slot); void pci_update_slot_number(struct pci_slot *slot, int slot_nr); int pci_scan_slot(struct pci_bus *bus, int devfn); |