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ACPI: add debug for device addition

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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@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bjorn Helgaas 2009-09-21 19:28:54 +00:00 committed by Len Brown
parent b24715027a
commit 29aaefa68f
1 changed files with 10 additions and 2 deletions
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12
drivers/acpi/scan.c
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@ -1230,6 +1230,7 @@ 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)
@ -1355,9 +1356,16 @@ 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)"));
kfree(buffer.pointer);
*child = device;
else
} else
acpi_device_release(&device->dev);
return result;