Add debug output for adding an ACPI device. Enable this with
"acpi.debug_layer=0x00010000" (ACPI_BUS_COMPONENT).
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@xxxxxx>
---
drivers/acpi/scan.c | 11 +++++++++--
1 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 652d104..92b4fe2 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -1178,6 +1178,7 @@ acpi_add_single_object(struct acpi_device **child,
{
int result = 0;
struct acpi_device *device = NULL;
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
if (!child)
@@ -1311,9 +1312,15 @@ acpi_add_single_object(struct acpi_device **child,
}
end:
- if (!result)
+ if (!result) {
+ acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Adding %s [%s] parent %s\n", dev_name(&device->dev),
+ (char *) buffer.pointer,
+ device->parent ? dev_name(&device->parent->dev) :
+ "(null)"));
*child = device;
- else {
+ } else {
kfree(device->pnp.cid_list);
kfree(device);
}
--
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