diff mbox

[04/19] ACPI: add debug for device addition

Message ID 20090731213653.29930.6859.stgit@bob.kio (mailing list archive)
State Accepted
Headers show

Commit Message

Bjorn Helgaas July 31, 2009, 9:36 p.m. UTC 
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>
---
 drivers/acpi/scan.c |   11 +++++++++--
 1 files changed, 9 insertions(+), 2 deletions(-)


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diff mbox

Patch

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);
 	}