From: Henrique de Moraes Holschuh <hmh@xxxxxxxxxx>
Some issues with the dock subdriver proved that a slightly improved
debugging setup for ACPI notifiers and handler helpers would be useful.
Signed-off-by: Henrique de Moraes Holschuh <hmh@xxxxxxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>
---
drivers/misc/thinkpad_acpi.c | 31 ++++++++++++++++++++-----------
1 files changed, 20 insertions(+), 11 deletions(-)
diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c
index 7aed118..68f1cc0 100644
--- a/drivers/misc/thinkpad_acpi.c
+++ b/drivers/misc/thinkpad_acpi.c
@@ -296,14 +296,22 @@ static void drv_acpi_handle_init(char *name,
int i;
acpi_status status;
+ vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
+ name);
+
for (i = 0; i < num_paths; i++) {
status = acpi_get_handle(parent, paths[i], handle);
if (ACPI_SUCCESS(status)) {
*path = paths[i];
+ dbg_printk(TPACPI_DBG_INIT,
+ "Found ACPI handle %s for %s\n",
+ *path, name);
return;
}
}
+ vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
+ name);
*handle = NULL;
}
@@ -320,19 +328,20 @@ static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
static int __init setup_acpi_notify(struct ibm_struct *ibm)
{
acpi_status status;
- int ret;
+ int rc;
BUG_ON(!ibm->acpi);
if (!*ibm->acpi->handle)
return 0;
- dbg_printk(TPACPI_DBG_INIT,
+ vdbg_printk(TPACPI_DBG_INIT,
"setting up ACPI notify for %s\n", ibm->name);
- ret = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
- if (ret < 0) {
- printk(IBM_ERR "%s device not present\n", ibm->name);
+ rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
+ if (rc < 0) {
+ printk(IBM_ERR "acpi_bus_get_device(%s) failed: %d\n",
+ ibm->name, rc);
return -ENODEV;
}
@@ -364,7 +373,7 @@ static int __init tpacpi_device_add(struct acpi_device *device)
static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
{
- int ret;
+ int rc;
dbg_printk(TPACPI_DBG_INIT,
"registering %s as an ACPI driver\n", ibm->name);
@@ -381,16 +390,16 @@ static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
ibm->acpi->driver->ids = ibm->acpi->hid;
ibm->acpi->driver->ops.add = &tpacpi_device_add;
- ret = acpi_bus_register_driver(ibm->acpi->driver);
- if (ret < 0) {
+ rc = acpi_bus_register_driver(ibm->acpi->driver);
+ if (rc < 0) {
printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n",
- ibm->acpi->hid, ret);
+ ibm->acpi->hid, rc);
kfree(ibm->acpi->driver);
ibm->acpi->driver = NULL;
- } else if (!ret)
+ } else if (!rc)
ibm->flags.acpi_driver_registered = 1;
- return ret;
+ return rc;
}
--
1.5.2.rc0.34.gda94
-
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