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Message-Id: <1349305214-3241-5-git-send-email-yinghai@kernel.org>
Date: Wed, 3 Oct 2012 16:00:14 -0700
From: Yinghai Lu <yinghai@...nel.org>
To: Len Brown <lenb@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
Linus Torvalds <torvalds@...ux-foundation.org>,
linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-acpi@...r.kernel.org, Yinghai Lu <yinghai@...nel.org>
Subject: [PATCH 4/4] ACPI: remove acpi_op_start workaround
No .start on any acpi_driver ops anymore.
Signed-off-by: Yinghai Lu <yinghai@...nel.org>
---
drivers/acpi/scan.c | 95 ++++++++--------------------------------------
include/acpi/acpi_bus.h | 8 ----
2 files changed, 17 insertions(+), 86 deletions(-)
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 1bafa2d..5e6d2ad 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -416,7 +416,6 @@ static void acpi_device_remove_notify_handler(struct acpi_device *device)
}
static int acpi_bus_driver_init(struct acpi_device *, struct acpi_driver *);
-static int acpi_start_single_object(struct acpi_device *);
static int acpi_device_probe(struct device * dev)
{
struct acpi_device *acpi_dev = to_acpi_device(dev);
@@ -425,9 +424,6 @@ static int acpi_device_probe(struct device * dev)
ret = acpi_bus_driver_init(acpi_dev, acpi_drv);
if (!ret) {
- if (acpi_dev->bus_ops.acpi_op_start)
- acpi_start_single_object(acpi_dev);
-
if (acpi_drv->ops.notify) {
ret = acpi_device_install_notify_handler(acpi_dev);
if (ret) {
@@ -604,24 +600,6 @@ acpi_bus_driver_init(struct acpi_device *device, struct acpi_driver *driver)
return 0;
}
-static int acpi_start_single_object(struct acpi_device *device)
-{
- int result = 0;
- struct acpi_driver *driver;
-
-
- if (!(driver = device->driver))
- return 0;
-
- if (driver->ops.start) {
- result = driver->ops.start(device);
- if (result && driver->ops.remove)
- driver->ops.remove(device, ACPI_BUS_REMOVAL_NORMAL);
- }
-
- return result;
-}
-
/**
* acpi_bus_register_driver - register a driver with the ACPI bus
* @driver: driver being registered
@@ -1254,8 +1232,7 @@ static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
static int acpi_add_single_object(struct acpi_device **child,
acpi_handle handle, int type,
- unsigned long long sta,
- struct acpi_bus_ops *ops)
+ unsigned long long sta)
{
int result;
struct acpi_device *device;
@@ -1271,7 +1248,6 @@ static int acpi_add_single_object(struct acpi_device **child,
device->device_type = type;
device->handle = handle;
device->parent = acpi_bus_get_parent(handle);
- device->bus_ops = *ops; /* workround for not call .start */
STRUCT_TO_INT(device->status) = sta;
device->drivers_autoprobe = true;
@@ -1354,16 +1330,12 @@ end:
static void acpi_bus_add_power_resource(acpi_handle handle)
{
- struct acpi_bus_ops ops = {
- .acpi_op_add = 1,
- .acpi_op_start = 1,
- };
struct acpi_device *device = NULL;
acpi_bus_get_device(handle, &device);
if (!device)
acpi_add_single_object(&device, handle, ACPI_BUS_TYPE_POWER,
- ACPI_STA_DEFAULT, &ops);
+ ACPI_STA_DEFAULT);
}
static int acpi_bus_type_and_status(acpi_handle handle, int *type,
@@ -1408,7 +1380,6 @@ static int acpi_bus_type_and_status(acpi_handle handle, int *type,
static acpi_status acpi_bus_check_add(acpi_handle handle, u32 lvl,
void *context, void **return_value)
{
- struct acpi_bus_ops *ops = context;
int type;
unsigned long long sta;
struct acpi_device *device;
@@ -1433,37 +1404,30 @@ static acpi_status acpi_bus_check_add(acpi_handle handle, u32 lvl,
/*
* We may already have an acpi_device from a previous enumeration. If
- * so, we needn't add it again, but we may still have to start it.
+ * so, we needn't add it again.
*/
device = NULL;
acpi_bus_get_device(handle, &device);
- if (ops->acpi_op_add && !device)
- acpi_add_single_object(&device, handle, type, sta, ops);
+ if (!device)
+ acpi_add_single_object(&device, handle, type, sta);
if (!device)
return AE_CTRL_DEPTH;
- if (ops->acpi_op_start && !(ops->acpi_op_add)) {
- status = acpi_start_single_object(device);
- if (ACPI_FAILURE(status))
- return AE_CTRL_DEPTH;
- }
-
if (!*return_value)
*return_value = device;
return AE_OK;
}
-static int acpi_bus_scan(acpi_handle handle, struct acpi_bus_ops *ops,
- struct acpi_device **child)
+static int acpi_bus_scan(acpi_handle handle, struct acpi_device **child)
{
acpi_status status;
void *device = NULL;
- status = acpi_bus_check_add(handle, 0, ops, &device);
+ status = acpi_bus_check_add(handle, 0, NULL, &device);
if (ACPI_SUCCESS(status))
acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX,
- acpi_bus_check_add, NULL, ops, &device);
+ acpi_bus_check_add, NULL, NULL, &device);
if (child)
*child = device;
@@ -1488,28 +1452,24 @@ static void acpi_bus_attach(struct acpi_device *dev)
}
/*
- * acpi_bus_add and acpi_bus_start
+ * acpi_bus_add
*
* scan a given ACPI tree and (probably recently hot-plugged)
- * create and add or starts found devices.
+ * create and add found devices.
*
* If no devices were found -ENODEV is returned which does not
* mean that this is a real error, there just have been no suitable
* ACPI objects in the table trunk from which the kernel could create
- * a device and add/start an appropriate driver.
+ * a device and add an appropriate driver.
*/
int
acpi_bus_add(struct acpi_device **child,
struct acpi_device *parent, acpi_handle handle, int type)
{
- struct acpi_bus_ops ops;
int result;
- memset(&ops, 0, sizeof(ops));
- ops.acpi_op_add = 1;
-
- result = acpi_bus_scan(handle, &ops, child);
+ result = acpi_bus_scan(handle, child);
if (*child)
acpi_bus_attach(*child);
@@ -1520,20 +1480,12 @@ EXPORT_SYMBOL(acpi_bus_add);
int acpi_bus_start(struct acpi_device *device)
{
- struct acpi_bus_ops ops;
- int result;
-
if (!device)
return -EINVAL;
- memset(&ops, 0, sizeof(ops));
- ops.acpi_op_start = 1;
-
- result = acpi_bus_scan(device->handle, &ops, NULL);
-
acpi_update_all_gpes();
- return result;
+ return 0;
}
EXPORT_SYMBOL(acpi_bus_start);
@@ -1596,11 +1548,6 @@ static int acpi_bus_scan_fixed(void)
{
int result = 0;
struct acpi_device *device = NULL;
- struct acpi_bus_ops ops;
-
- memset(&ops, 0, sizeof(ops));
- ops.acpi_op_add = 1;
- ops.acpi_op_start = 1;
/*
* Enumerate all fixed-feature devices.
@@ -1608,17 +1555,14 @@ static int acpi_bus_scan_fixed(void)
if ((acpi_gbl_FADT.flags & ACPI_FADT_POWER_BUTTON) == 0) {
result = acpi_add_single_object(&device, NULL,
ACPI_BUS_TYPE_POWER_BUTTON,
- ACPI_STA_DEFAULT,
- &ops);
+ ACPI_STA_DEFAULT);
device_init_wakeup(&device->dev, true);
}
- if ((acpi_gbl_FADT.flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
+ if ((acpi_gbl_FADT.flags & ACPI_FADT_SLEEP_BUTTON) == 0)
result = acpi_add_single_object(&device, NULL,
ACPI_BUS_TYPE_SLEEP_BUTTON,
- ACPI_STA_DEFAULT,
- &ops);
- }
+ ACPI_STA_DEFAULT);
return result;
}
@@ -1626,11 +1570,6 @@ static int acpi_bus_scan_fixed(void)
int __init acpi_scan_init(void)
{
int result;
- struct acpi_bus_ops ops;
-
- memset(&ops, 0, sizeof(ops));
- ops.acpi_op_add = 1;
- ops.acpi_op_start = 1;
result = bus_register(&acpi_bus_type);
if (result) {
@@ -1643,7 +1582,7 @@ int __init acpi_scan_init(void)
/*
* Enumerate devices in the ACPI namespace.
*/
- result = acpi_bus_scan(ACPI_ROOT_OBJECT, &ops, &acpi_root);
+ result = acpi_bus_scan(ACPI_ROOT_OBJECT, &acpi_root);
if (!result)
result = acpi_bus_scan_fixed();
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index 969544e..cc9363b 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -119,20 +119,13 @@ struct acpi_device;
typedef int (*acpi_op_add) (struct acpi_device * device);
typedef int (*acpi_op_remove) (struct acpi_device * device, int type);
-typedef int (*acpi_op_start) (struct acpi_device * device);
typedef int (*acpi_op_bind) (struct acpi_device * device);
typedef int (*acpi_op_unbind) (struct acpi_device * device);
typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);
-struct acpi_bus_ops {
- u32 acpi_op_add:1;
- u32 acpi_op_start:1;
-};
-
struct acpi_device_ops {
acpi_op_add add;
acpi_op_remove remove;
- acpi_op_start start;
acpi_op_bind bind;
acpi_op_unbind unbind;
acpi_op_notify notify;
@@ -302,7 +295,6 @@ struct acpi_device {
struct acpi_driver *driver;
void *driver_data;
struct device dev;
- struct acpi_bus_ops bus_ops; /* workaround for different code path for hotplug */
enum acpi_bus_removal_type removal_type; /* indicate for different removal type */
bool drivers_autoprobe;
};
--
1.7.7
--
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