ACPI / PM: Fix /proc/acpi/wakeup for devices w/o bus or parent

Fix /proc/acpi/wakeup for devices without bus or parent

This patch fixes printing the wakeup status for devices without a bus
or parent, such as laptop lid switches and sleep buttons. These devices
have an empty physical_node_list, because acpi_bind_one is never run
for them.

[rjw: White space and coding style.]
Signed-off-by: Andreas Fleig <andreasfleig@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 5 insertions, 4 deletions

diff --git a/drivers/acpi/proc.c b/drivers/acpi/proc.c
index ef98796b3824..52ce76725c20 100644
--- a/drivers/acpi/proc.c
+++ b/drivers/acpi/proc.c
@@ -311,11 +311,12 @@ acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset)
                            dev->pnp.bus_id,
                            (u32) dev->wakeup.sleep_state);
 
-                if (!dev->physical_node_count)
+                if (!dev->physical_node_count) {
                         seq_printf(seq, "%c%-8s\n",
-                                dev->wakeup.flags.run_wake ?
-                                '*' : ' ', "disabled");
-                else {
+                                dev->wakeup.flags.run_wake ? '*' : ' ',
+                                device_may_wakeup(&dev->dev) ?
+                                        "enabled" : "disabled");
+                } else {
                         struct device *ldev;
                         list_for_each_entry(entry, &dev->physical_node_list,
                                         node) {