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authorBjorn Helgaas <bjorn.helgaas@hp.com>2009-05-22 11:43:46 -0600
committerLen Brown <len.brown@intel.com>2009-06-18 00:13:15 -0400
commitaa8a149c0cc822e3886eb85b95cb2f7d67e5b7e6 (patch)
tree827ff46fd22d9a47b571aac728817bec53a3fd55 /drivers/acpi/bus.c
parent02c37bd8d0737c31caaed9a65bd7cb80aefb4c9a (diff)
ACPI: remove unused "status_changed" return value from Check Device handling
Remove "status_changed" return from acpi_bus_check_device(). Nobody does anything useful based on its value. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/bus.c')
-rw-r--r--drivers/acpi/bus.c22
1 files changed, 3 insertions, 19 deletions
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index eb986385c57..19e78fb0a8d 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -450,8 +450,7 @@ int acpi_bus_receive_event(struct acpi_bus_event *event)
Notification Handling
-------------------------------------------------------------------------- */
-static int
-acpi_bus_check_device(struct acpi_device *device, int *status_changed)
+static int acpi_bus_check_device(struct acpi_device *device)
{
acpi_status status = 0;
struct acpi_device_status old_status;
@@ -460,9 +459,6 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed)
if (!device)
return -EINVAL;
- if (status_changed)
- *status_changed = 0;
-
old_status = device->status;
/*
@@ -471,10 +467,6 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed)
*/
if (device->parent && !device->parent->status.present) {
device->status = device->parent->status;
- if (STRUCT_TO_INT(old_status) != STRUCT_TO_INT(device->status)) {
- if (status_changed)
- *status_changed = 1;
- }
return 0;
}
@@ -485,9 +477,6 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed)
if (STRUCT_TO_INT(old_status) == STRUCT_TO_INT(device->status))
return 0;
- if (status_changed)
- *status_changed = 1;
-
/*
* Device Insertion/Removal
*/
@@ -505,20 +494,15 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed)
static int acpi_bus_check_scope(struct acpi_device *device)
{
int result = 0;
- int status_changed = 0;
-
if (!device)
return -EINVAL;
/* Status Change? */
- result = acpi_bus_check_device(device, &status_changed);
+ result = acpi_bus_check_device(device);
if (result)
return result;
- if (!status_changed)
- return 0;
-
/*
* TBD: Enumerate child devices within this device's scope and
* run acpi_bus_check_device()'s on them.
@@ -571,7 +555,7 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
break;
case ACPI_NOTIFY_DEVICE_CHECK:
- result = acpi_bus_check_device(device, NULL);
+ result = acpi_bus_check_device(device);
/*
* TBD: We'll need to outsource certain events to non-ACPI
* drivers via the device manager (device.c).