Merge tag 'pci-v3.14-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...

[linux-2.6-block.git] / drivers / pci / hotplug / acpiphp_glue.c

diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 641ba6761bd756ca9aa24471fdc53abfc1aaf041..ee26bac2d3787e2cc45aa8755ffe5db14609209e 100644 (file)
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -279,7 +279,9 @@ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data,
 
        status = acpi_evaluate_integer(handle, "_ADR", NULL, &adr);
        if (ACPI_FAILURE(status)) {
-               acpi_handle_warn(handle, "can't evaluate _ADR (%#x)\n", status);
+               if (status != AE_NOT_FOUND)
+                       acpi_handle_warn(handle,
+                               "can't evaluate _ADR (%#x)\n", status);
                return AE_OK;
        }
 
@@ -646,6 +648,24 @@ static void disable_slot(struct acpiphp_slot *slot)
        slot->flags &= (~SLOT_ENABLED);
 }
 
+static bool acpiphp_no_hotplug(acpi_handle handle)
+{
+       struct acpi_device *adev = NULL;
+
+       acpi_bus_get_device(handle, &adev);
+       return adev && adev->flags.no_hotplug;
+}
+
+static bool slot_no_hotplug(struct acpiphp_slot *slot)
+{
+       struct acpiphp_func *func;
+
+       list_for_each_entry(func, &slot->funcs, sibling)
+               if (acpiphp_no_hotplug(func_to_handle(func)))
+                       return true;
+
+       return false;
+}
 
 /**
  * get_slot_status - get ACPI slot status
@@ -704,7 +724,8 @@ static void trim_stale_devices(struct pci_dev *dev)
                unsigned long long sta;
 
                status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
-               alive = ACPI_SUCCESS(status) && sta == ACPI_STA_ALL;
+               alive = (ACPI_SUCCESS(status) && sta == ACPI_STA_ALL)
+                       || acpiphp_no_hotplug(handle);
        }
        if (!alive) {
                u32 v;
@@ -748,8 +769,9 @@ static void acpiphp_check_bridge(struct acpiphp_bridge *bridge)
                struct pci_dev *dev, *tmp;
 
                mutex_lock(&slot->crit_sect);
-               /* wake up all functions */
-               if (get_slot_status(slot) == ACPI_STA_ALL) {
+               if (slot_no_hotplug(slot)) {
+                       ; /* do nothing */
+               } else if (get_slot_status(slot) == ACPI_STA_ALL) {
                        /* remove stale devices if any */
                        list_for_each_entry_safe(dev, tmp, &bus->devices,
                                                 bus_list)