diff options
| author | Alex Chiang <achiang@hp.com> | 2008-10-20 17:40:52 -0600 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2008-10-22 16:42:38 -0700 |
| commit | 828f37683e6d3ab5912989df0d04201db7ad798e (patch) | |
| tree | 5761f28363b8fd4b23eaf88305b3f29cfc6b92ba /drivers/acpi | |
| parent | d25b7c8d6ba2735602003d75a28894772fe8ad6a (diff) | |
PCI: update pci_create_slot() to take a 'hotplug' param
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>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/pci_slot.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/acpi/pci_slot.c b/drivers/acpi/pci_slot.c index d5b4ef89887..8d4a568be1c 100644 --- a/drivers/acpi/pci_slot.c +++ b/drivers/acpi/pci_slot.c @@ -150,7 +150,7 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv) } snprintf(name, sizeof(name), "%u", (u32)sun); - pci_slot = pci_create_slot(pci_bus, device, name); + pci_slot = pci_create_slot(pci_bus, device, name, NULL); if (IS_ERR(pci_slot)) { err("pci_create_slot returned %ld\n", PTR_ERR(pci_slot)); kfree(slot); |