It seems my previous e-mail was not sent properly. So resending it.
Thanks,
Kenji Kaneshige
Kenji Kaneshige wrote:
Hi Alex-san,
Here is one comment, though I have not finished reviewing/testing
your patches yet (sorry for the delay).
Alex Chiang wrote:
(snip.)
diff --git a/drivers/pci/hotplug/pci_hotplug_core.c
b/drivers/pci/hotplug/pci_hotplug_core.c
index 3e37d63..46802dc 100644
--- a/drivers/pci/hotplug/pci_hotplug_core.c
+++ b/drivers/pci/hotplug/pci_hotplug_core.c
@@ -570,39 +570,32 @@ int pci_hp_register(struct hotplug_slot *slot,
struct pci_bus *bus, int slot_nr,
return -EINVAL;
}
- /* Check if we have already registered a slot with the same name. */
- if (get_slot_from_name(name))
- return -EEXIST;
-
/*
- * No problems if we call this interface from both ACPI_PCI_SLOT
- * driver and call it here again. If we've already created the
- * pci_slot, the interface will simply bump the refcount.
+ * Look for existing slot. If we find it, and it was created by a
+ * slot detection driver (ie, doesn't have a ->hotplug()) then we
+ * allow the hotplug driver calling us to rename the slot if
desired.
+ *
+ * Otherwise, create the slot and carry on with life.
*/
- pci_slot = pci_create_slot(bus, slot_nr, name);
- if (IS_ERR(pci_slot))
- return PTR_ERR(pci_slot);
-
- if (pci_slot->hotplug) {
- dbg("%s: already claimed\n", __func__);
- pci_destroy_slot(pci_slot);
- return -EBUSY;
+ pci_slot = pci_get_pci_slot(bus, slot_nr);
The pci_get_pci_slot() function refers pci_bus->slots list, so it
should be called with pci_bus_sem semaphore held as pci_create_slot()
does, or pci_bus_sem semaphore should be held by pci_get_pci_slot()
itself.
Thanks,
Kenji Kaneshige
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