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authorKristen Accardi <kristen.c.accardi@intel.com>2006-06-28 03:09:54 -0400
committerLen Brown <len.brown@intel.com>2006-06-28 03:09:54 -0400
commit95b38b3f453c16de0f8cddcde3e71050bbfb37b9 (patch)
tree54893468b8335c88135ab01d580f0d1f87abf2f2 /drivers/pci/hotplug
parent2b85e1307fe3a84eca2e1a21c6c857359908dab4 (diff)
ACPIPHP: prevent duplicate slot numbers when no _SUN
Dock bridges generally do not implement _SUN, yet show up as ejectable slots. If you have more than one ejectable slot that does not implement SUN, with the current code you will get duplicate slot numbers. So, if there is no _SUN, use the current count of the number of slots found instead. Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/pci/hotplug')
-rw-r--r--drivers/pci/hotplug/acpiphp_glue.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index b3899cfcab6..ef95d12fb32 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -219,8 +219,13 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
newfunc->flags |= FUNC_HAS_DCK;
status = acpi_evaluate_integer(handle, "_SUN", NULL, &sun);
- if (ACPI_FAILURE(status))
- sun = -1;
+ if (ACPI_FAILURE(status)) {
+ /*
+ * use the count of the number of slots we've found
+ * for the number of the slot
+ */
+ sun = bridge->nr_slots+1;
+ }
/* search for objects that share the same slot */
for (slot = bridge->slots; slot; slot = slot->next)