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Message-ID: <1828627.tdWV9SEqCh@kreacher>
Date: Wed, 10 Aug 2022 18:16:33 +0200
From: "Rafael J. Wysocki" <rjw@...ysocki.net>
To: Linux ACPI <linux-acpi@...r.kernel.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
Linux PM <linux-pm@...r.kernel.org>
Subject: [PATCH v1 3/5] ACPI: scan: Rearrange initialization of ACPI device objects
From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
The initialization of ACPI device objects is split between
acpi_init_device_object() and __acpi_device_add() that initializes
the dev field in struct acpi_device. The "release" function pointer
is passed to __acpi_device_add() for this reason.
However, that split is artificial and all of the initialization can
be carried out by acpi_init_device_object(), so rearrange the code
to that end. In particular, make acpi_init_device_object() take the
"release" pointer as an argument, along with the "type" which is
related to it, instead of __acpi_device_add().
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
drivers/acpi/internal.h | 5 ++---
drivers/acpi/power.c | 5 +++--
drivers/acpi/scan.c | 27 ++++++++++++++-------------
3 files changed, 19 insertions(+), 18 deletions(-)
Index: linux-pm/drivers/acpi/scan.c
===================================================================
--- linux-pm.orig/drivers/acpi/scan.c
+++ linux-pm/drivers/acpi/scan.c
@@ -673,8 +673,7 @@ static void acpi_store_pld_crc(struct ac
ACPI_FREE(pld);
}
-static int __acpi_device_add(struct acpi_device *device,
- void (*release)(struct device *))
+static int __acpi_device_add(struct acpi_device *device)
{
struct acpi_device_bus_id *acpi_device_bus_id;
int result;
@@ -730,11 +729,6 @@ static int __acpi_device_add(struct acpi
mutex_unlock(&acpi_device_lock);
- if (device->parent)
- device->dev.parent = &device->parent->dev;
-
- device->dev.bus = &acpi_bus_type;
- device->dev.release = release;
result = device_add(&device->dev);
if (result) {
dev_err(&device->dev, "Error registering device\n");
@@ -761,7 +755,7 @@ err_unlock:
return result;
}
-int acpi_device_add(struct acpi_device *adev, void (*release)(struct device *))
+int acpi_device_add(struct acpi_device *adev)
{
int ret;
@@ -769,7 +763,7 @@ int acpi_device_add(struct acpi_device *
if (ret)
return ret;
- return __acpi_device_add(adev, release);
+ return __acpi_device_add(adev);
}
/* --------------------------------------------------------------------------
@@ -1776,12 +1770,19 @@ static bool acpi_device_enumeration_by_p
}
void acpi_init_device_object(struct acpi_device *device, acpi_handle handle,
- int type)
+ int type, void (*release)(struct device *))
{
+ struct acpi_device *parent = acpi_find_parent_acpi_dev(handle);
+
INIT_LIST_HEAD(&device->pnp.ids);
device->device_type = type;
device->handle = handle;
- device->parent = acpi_find_parent_acpi_dev(handle);
+ if (parent) {
+ device->parent = parent;
+ device->dev.parent = &parent->dev;
+ }
+ device->dev.release = release;
+ device->dev.bus = &acpi_bus_type;
fwnode_init(&device->fwnode, &acpi_device_fwnode_ops);
acpi_set_device_status(device, ACPI_STA_DEFAULT);
acpi_device_get_busid(device);
@@ -1835,7 +1836,7 @@ static int acpi_add_single_object(struct
if (!device)
return -ENOMEM;
- acpi_init_device_object(device, handle, type);
+ acpi_init_device_object(device, handle, type, acpi_device_release);
/*
* Getting the status is delayed till here so that we can call
* acpi_bus_get_status() and use its quirk handling. Note that
@@ -1865,7 +1866,7 @@ static int acpi_add_single_object(struct
mutex_unlock(&acpi_dep_list_lock);
if (!result)
- result = __acpi_device_add(device, acpi_device_release);
+ result = __acpi_device_add(device);
if (result) {
acpi_device_release(&device->dev);
Index: linux-pm/drivers/acpi/internal.h
===================================================================
--- linux-pm.orig/drivers/acpi/internal.h
+++ linux-pm/drivers/acpi/internal.h
@@ -102,10 +102,9 @@ struct acpi_device_bus_id {
struct list_head node;
};
-int acpi_device_add(struct acpi_device *device,
- void (*release)(struct device *));
void acpi_init_device_object(struct acpi_device *device, acpi_handle handle,
- int type);
+ int type, void (*release)(struct device *));
+int acpi_device_add(struct acpi_device *device);
int acpi_device_setup_files(struct acpi_device *dev);
void acpi_device_remove_files(struct acpi_device *dev);
void acpi_device_add_finalize(struct acpi_device *device);
Index: linux-pm/drivers/acpi/power.c
===================================================================
--- linux-pm.orig/drivers/acpi/power.c
+++ linux-pm/drivers/acpi/power.c
@@ -944,7 +944,8 @@ struct acpi_device *acpi_add_power_resou
return NULL;
device = &resource->device;
- acpi_init_device_object(device, handle, ACPI_BUS_TYPE_POWER);
+ acpi_init_device_object(device, handle, ACPI_BUS_TYPE_POWER,
+ acpi_release_power_resource);
mutex_init(&resource->resource_lock);
INIT_LIST_HEAD(&resource->list_node);
INIT_LIST_HEAD(&resource->dependents);
@@ -968,7 +969,7 @@ struct acpi_device *acpi_add_power_resou
pr_info("%s [%s]\n", acpi_device_name(device), acpi_device_bid(device));
device->flags.match_driver = true;
- result = acpi_device_add(device, acpi_release_power_resource);
+ result = acpi_device_add(device);
if (result)
goto err;
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