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-rw-r--r--drivers/acpi/acpi_amba.c5
-rw-r--r--drivers/acpi/acpi_platform.c6
-rw-r--r--drivers/acpi/acpi_video.c2
-rw-r--r--drivers/acpi/device_pm.c19
-rw-r--r--drivers/acpi/property.c6
-rw-r--r--drivers/acpi/sbs.c2
-rw-r--r--drivers/acpi/sbshc.c2
-rw-r--r--drivers/acpi/scan.c17
-rw-r--r--drivers/hv/vmbus_drv.c3
-rw-r--r--drivers/perf/arm_dsu_pmu.c4
-rw-r--r--drivers/perf/qcom_l3_pmu.c3
-rw-r--r--drivers/spi/spi.c2
-rw-r--r--drivers/thunderbolt/acpi.c2
-rw-r--r--include/acpi/acpi_bus.h10
14 files changed, 46 insertions, 37 deletions
diff --git a/drivers/acpi/acpi_amba.c b/drivers/acpi/acpi_amba.c
index ab8a4e0191b1..9d69546db2a4 100644
--- a/drivers/acpi/acpi_amba.c
+++ b/drivers/acpi/acpi_amba.c
@@ -48,6 +48,7 @@ static void amba_register_dummy_clk(void)
static int amba_handler_attach(struct acpi_device *adev,
const struct acpi_device_id *id)
{
+ struct acpi_device *parent = acpi_dev_parent(adev);
struct amba_device *dev;
struct resource_entry *rentry;
struct list_head resource_list;
@@ -97,8 +98,8 @@ static int amba_handler_attach(struct acpi_device *adev,
* attached to it, that physical device should be the parent of
* the amba device we are about to create.
*/
- if (adev->parent)
- dev->dev.parent = acpi_get_first_physical_node(adev->parent);
+ if (parent)
+ dev->dev.parent = acpi_get_first_physical_node(parent);
ACPI_COMPANION_SET(&dev->dev, adev);
diff --git a/drivers/acpi/acpi_platform.c b/drivers/acpi/acpi_platform.c
index de3cbf152dee..1a1c78b23fba 100644
--- a/drivers/acpi/acpi_platform.c
+++ b/drivers/acpi/acpi_platform.c
@@ -78,7 +78,7 @@ static void acpi_platform_fill_resource(struct acpi_device *adev,
* If the device has parent we need to take its resources into
* account as well because this device might consume part of those.
*/
- parent = acpi_get_first_physical_node(adev->parent);
+ parent = acpi_get_first_physical_node(acpi_dev_parent(adev));
if (parent && dev_is_pci(parent))
dest->parent = pci_find_resource(to_pci_dev(parent), dest);
}
@@ -97,6 +97,7 @@ static void acpi_platform_fill_resource(struct acpi_device *adev,
struct platform_device *acpi_create_platform_device(struct acpi_device *adev,
const struct property_entry *properties)
{
+ struct acpi_device *parent = acpi_dev_parent(adev);
struct platform_device *pdev = NULL;
struct platform_device_info pdevinfo;
struct resource_entry *rentry;
@@ -137,8 +138,7 @@ struct platform_device *acpi_create_platform_device(struct acpi_device *adev,
* attached to it, that physical device should be the parent of the
* platform device we are about to create.
*/
- pdevinfo.parent = adev->parent ?
- acpi_get_first_physical_node(adev->parent) : NULL;
+ pdevinfo.parent = parent ? acpi_get_first_physical_node(parent) : NULL;
pdevinfo.name = dev_name(&adev->dev);
pdevinfo.id = -1;
pdevinfo.res = resources;
diff --git a/drivers/acpi/acpi_video.c b/drivers/acpi/acpi_video.c
index 5cbe2196176d..92a6c6f9a9a7 100644
--- a/drivers/acpi/acpi_video.c
+++ b/drivers/acpi/acpi_video.c
@@ -2030,7 +2030,7 @@ static int acpi_video_bus_add(struct acpi_device *device)
acpi_status status;
status = acpi_walk_namespace(ACPI_TYPE_DEVICE,
- device->parent->handle, 1,
+ acpi_dev_parent(device)->handle, 1,
acpi_video_bus_match, NULL,
device, NULL);
if (status == AE_ALREADY_EXISTS) {
diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c
index 2b7e08d54c3f..028d8d14cd44 100644
--- a/drivers/acpi/device_pm.c
+++ b/drivers/acpi/device_pm.c
@@ -74,6 +74,7 @@ static int acpi_dev_pm_explicit_get(struct acpi_device *device, int *state)
*/
int acpi_device_get_power(struct acpi_device *device, int *state)
{
+ struct acpi_device *parent = acpi_dev_parent(device);
int result = ACPI_STATE_UNKNOWN;
int error;
@@ -82,8 +83,7 @@ int acpi_device_get_power(struct acpi_device *device, int *state)
if (!device->flags.power_manageable) {
/* TBD: Non-recursive algorithm for walking up hierarchy. */
- *state = device->parent ?
- device->parent->power.state : ACPI_STATE_D0;
+ *state = parent ? parent->power.state : ACPI_STATE_D0;
goto out;
}
@@ -122,10 +122,10 @@ int acpi_device_get_power(struct acpi_device *device, int *state)
* point, the fact that the device is in D0 implies that the parent has
* to be in D0 too, except if ignore_parent is set.
*/
- if (!device->power.flags.ignore_parent && device->parent
- && device->parent->power.state == ACPI_STATE_UNKNOWN
- && result == ACPI_STATE_D0)
- device->parent->power.state = ACPI_STATE_D0;
+ if (!device->power.flags.ignore_parent && parent &&
+ parent->power.state == ACPI_STATE_UNKNOWN &&
+ result == ACPI_STATE_D0)
+ parent->power.state = ACPI_STATE_D0;
*state = result;
@@ -159,6 +159,7 @@ static int acpi_dev_pm_explicit_set(struct acpi_device *adev, int state)
*/
int acpi_device_set_power(struct acpi_device *device, int state)
{
+ struct acpi_device *parent = acpi_dev_parent(device);
int target_state = state;
int result = 0;
@@ -191,12 +192,12 @@ int acpi_device_set_power(struct acpi_device *device, int state)
return -ENODEV;
}
- if (!device->power.flags.ignore_parent && device->parent &&
- state < device->parent->power.state) {
+ if (!device->power.flags.ignore_parent && parent &&
+ state < parent->power.state) {
acpi_handle_debug(device->handle,
"Cannot transition to %s for parent in %s\n",
acpi_power_state_string(state),
- acpi_power_state_string(device->parent->power.state));
+ acpi_power_state_string(parent->power.state));
return -ENODEV;
}
diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c
index 7b3ad8ed2f4e..3dab3ac9c4a1 100644
--- a/drivers/acpi/property.c
+++ b/drivers/acpi/property.c
@@ -304,8 +304,10 @@ static void acpi_init_of_compatible(struct acpi_device *adev)
ret = acpi_dev_get_property(adev, "compatible",
ACPI_TYPE_STRING, &of_compatible);
if (ret) {
- if (adev->parent
- && adev->parent->flags.of_compatible_ok)
+ struct acpi_device *parent;
+
+ parent = acpi_dev_parent(adev);
+ if (parent && parent->flags.of_compatible_ok)
goto out;
return;
diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c
index 4938010fcac7..e6a01a8df1b8 100644
--- a/drivers/acpi/sbs.c
+++ b/drivers/acpi/sbs.c
@@ -632,7 +632,7 @@ static int acpi_sbs_add(struct acpi_device *device)
mutex_init(&sbs->lock);
- sbs->hc = acpi_driver_data(device->parent);
+ sbs->hc = acpi_driver_data(acpi_dev_parent(device));
sbs->device = device;
strcpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_SBS_CLASS);
diff --git a/drivers/acpi/sbshc.c b/drivers/acpi/sbshc.c
index 7c62e149a7a1..340e0b61587e 100644
--- a/drivers/acpi/sbshc.c
+++ b/drivers/acpi/sbshc.c
@@ -266,7 +266,7 @@ static int acpi_smbus_hc_add(struct acpi_device *device)
mutex_init(&hc->lock);
init_waitqueue_head(&hc->wait);
- hc->ec = acpi_driver_data(device->parent);
+ hc->ec = acpi_driver_data(acpi_dev_parent(device));
hc->offset = (val >> 8) & 0xff;
hc->query_bit = val & 0xff;
device->driver_data = hc;
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 0d9c350608bf..f6b9ea937de1 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -29,8 +29,6 @@ extern struct acpi_device *acpi_root;
#define ACPI_BUS_HID "LNXSYBUS"
#define ACPI_BUS_DEVICE_NAME "System Bus"
-#define ACPI_IS_ROOT_DEVICE(device) (!(device)->parent)
-
#define INVALID_ACPI_HANDLE ((acpi_handle)empty_zero_page)
static const char *dummy_hid = "device";
@@ -1110,7 +1108,7 @@ static void acpi_device_get_busid(struct acpi_device *device)
* The device's Bus ID is simply the object name.
* TBD: Shouldn't this value be unique (within the ACPI namespace)?
*/
- if (ACPI_IS_ROOT_DEVICE(device)) {
+ if (!acpi_dev_parent(device)) {
strcpy(device->pnp.bus_id, "ACPI");
return;
}
@@ -1646,7 +1644,7 @@ static void acpi_init_coherency(struct acpi_device *adev)
{
unsigned long long cca = 0;
acpi_status status;
- struct acpi_device *parent = adev->parent;
+ struct acpi_device *parent = acpi_dev_parent(adev);
if (parent && parent->flags.cca_seen) {
/*
@@ -1690,7 +1688,7 @@ static int acpi_check_serial_bus_slave(struct acpi_resource *ares, void *data)
static bool acpi_is_indirect_io_slave(struct acpi_device *device)
{
- struct acpi_device *parent = device->parent;
+ struct acpi_device *parent = acpi_dev_parent(device);
static const struct acpi_device_id indirect_io_hosts[] = {
{"HISI0191", 0},
{}
@@ -1767,10 +1765,7 @@ void acpi_init_device_object(struct acpi_device *device, acpi_handle handle,
INIT_LIST_HEAD(&device->pnp.ids);
device->device_type = type;
device->handle = handle;
- if (parent) {
- device->parent = parent;
- device->dev.parent = &parent->dev;
- }
+ device->dev.parent = parent ? &parent->dev : NULL;
device->dev.release = release;
device->dev.bus = &acpi_bus_type;
fwnode_init(&device->fwnode, &acpi_device_fwnode_ops);
@@ -1867,8 +1862,8 @@ static int acpi_add_single_object(struct acpi_device **child,
acpi_device_add_finalize(device);
acpi_handle_debug(handle, "Added as %s, parent %s\n",
- dev_name(&device->dev), device->parent ?
- dev_name(&device->parent->dev) : "(null)");
+ dev_name(&device->dev), device->dev.parent ?
+ dev_name(device->dev.parent) : "(null)");
*child = device;
return 0;
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 23c680d1a0f5..c905d40964cb 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -2427,7 +2427,8 @@ static int vmbus_acpi_add(struct acpi_device *device)
* Some ancestor of the vmbus acpi device (Gen1 or Gen2
* firmware) is the VMOD that has the mmio ranges. Get that.
*/
- for (ancestor = device->parent; ancestor; ancestor = ancestor->parent) {
+ for (ancestor = acpi_dev_parent(device); ancestor;
+ ancestor = acpi_dev_parent(ancestor)) {
result = acpi_walk_resources(ancestor->handle, METHOD_NAME__CRS,
vmbus_walk_resources, NULL);
diff --git a/drivers/perf/arm_dsu_pmu.c b/drivers/perf/arm_dsu_pmu.c
index a36698a90d2f..4a15c86f45ef 100644
--- a/drivers/perf/arm_dsu_pmu.c
+++ b/drivers/perf/arm_dsu_pmu.c
@@ -639,6 +639,7 @@ static int dsu_pmu_dt_get_cpus(struct device *dev, cpumask_t *mask)
static int dsu_pmu_acpi_get_cpus(struct device *dev, cpumask_t *mask)
{
#ifdef CONFIG_ACPI
+ struct acpi_device *parent_adev = acpi_dev_parent(ACPI_COMPANION(dev));
int cpu;
/*
@@ -653,8 +654,7 @@ static int dsu_pmu_acpi_get_cpus(struct device *dev, cpumask_t *mask)
continue;
acpi_dev = ACPI_COMPANION(cpu_dev);
- if (acpi_dev &&
- acpi_dev->parent == ACPI_COMPANION(dev)->parent)
+ if (acpi_dev && acpi_dev_parent(acpi_dev) == parent_adev)
cpumask_set_cpu(cpu, mask);
}
#endif
diff --git a/drivers/perf/qcom_l3_pmu.c b/drivers/perf/qcom_l3_pmu.c
index 1ff2ff6582bf..346311a05460 100644
--- a/drivers/perf/qcom_l3_pmu.c
+++ b/drivers/perf/qcom_l3_pmu.c
@@ -742,7 +742,8 @@ static int qcom_l3_cache_pmu_probe(struct platform_device *pdev)
l3pmu = devm_kzalloc(&pdev->dev, sizeof(*l3pmu), GFP_KERNEL);
name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "l3cache_%s_%s",
- acpi_dev->parent->pnp.unique_id, acpi_dev->pnp.unique_id);
+ acpi_dev_parent(acpi_dev)->pnp.unique_id,
+ acpi_dev->pnp.unique_id);
if (!l3pmu || !name)
return -ENOMEM;
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 83da8862b8f2..58302259a5e3 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -4375,7 +4375,7 @@ static int acpi_spi_notify(struct notifier_block *nb, unsigned long value,
switch (value) {
case ACPI_RECONFIG_DEVICE_ADD:
- ctlr = acpi_spi_find_controller_by_adev(adev->parent);
+ ctlr = acpi_spi_find_controller_by_adev(acpi_dev_parent(adev));
if (!ctlr)
break;
diff --git a/drivers/thunderbolt/acpi.c b/drivers/thunderbolt/acpi.c
index b1f0dc8df47c..7a8adf5ad5a0 100644
--- a/drivers/thunderbolt/acpi.c
+++ b/drivers/thunderbolt/acpi.c
@@ -42,7 +42,7 @@ static acpi_status tb_acpi_add_link(acpi_handle handle, u32 level, void *data,
*/
dev = acpi_get_first_physical_node(adev);
while (!dev) {
- adev = adev->parent;
+ adev = acpi_dev_parent(adev);
if (!adev)
break;
dev = acpi_get_first_physical_node(adev);
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index 7ff067a5a3bd..6289020fdab8 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -365,7 +365,6 @@ struct acpi_device {
int device_type;
acpi_handle handle; /* no handle for fixed hardware */
struct fwnode_handle fwnode;
- struct acpi_device *parent;
struct list_head wakeup_list;
struct list_head del_list;
struct acpi_device_status status;
@@ -458,6 +457,14 @@ static inline void *acpi_driver_data(struct acpi_device *d)
#define to_acpi_device(d) container_of(d, struct acpi_device, dev)
#define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
+static inline struct acpi_device *acpi_dev_parent(struct acpi_device *adev)
+{
+ if (adev->dev.parent)
+ return to_acpi_device(adev->dev.parent);
+
+ return NULL;
+}
+
static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta)
{
*((u32 *)&adev->status) = sta;
@@ -478,6 +485,7 @@ void acpi_initialize_hp_context(struct acpi_device *adev,
/* acpi_device.dev.bus == &acpi_bus_type */
extern struct bus_type acpi_bus_type;
+struct acpi_device *acpi_dev_parent(struct acpi_device *adev);
int acpi_bus_for_each_dev(int (*fn)(struct device *, void *), void *data);
int acpi_dev_for_each_child(struct acpi_device *adev,
int (*fn)(struct acpi_device *, void *), void *data);
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-29 18:40:37 +0100