There is already acpi_bus_get_private_data() to get ACPI handle data
which is associated with acpi_bus_private_data_handler(). This patch
is to add acpi_bus_attach_private_data() to make a pair and facilitate
to attach and get data to/from ACPI handle.
Signed-off-by: Lan Tianyu <tianyu.lan@xxxxxxxxx>
---
drivers/acpi/bus.c | 18 +++++++++++++++++-
include/acpi/acpi_bus.h | 1 +
2 files changed, 18 insertions(+), 1 deletion(-)
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index e7e5844..4ed8d48 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -132,6 +132,22 @@ void acpi_bus_private_data_handler(acpi_handle handle,
}
EXPORT_SYMBOL(acpi_bus_private_data_handler);
+int acpi_bus_attach_private_data(acpi_handle handle, void *data)
+{
+ acpi_status status;
+
+ status = acpi_attach_data(handle,
+ acpi_bus_private_data_handler, data);
+ if (ACPI_FAILURE(status)) {
+ ACPI_ERROR((AE_INFO, "Error attaching device[%p] data\n",
+ handle));
+ return -ENODEV;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(acpi_bus_attach_private_data);
+
int acpi_bus_get_private_data(acpi_handle handle, void **data)
{
acpi_status status;
@@ -141,7 +157,7 @@ int acpi_bus_get_private_data(acpi_handle handle, void **data)
status = acpi_get_data(handle, acpi_bus_private_data_handler, data);
if (ACPI_FAILURE(status) || !*data) {
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n",
+ ACPI_ERROR((AE_INFO, "No context for object [%p]\n",
handle));
return -ENODEV;
}
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index 84a2e29..a1f6fec 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -406,6 +406,7 @@ extern struct kobject *acpi_kobj;
extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
void acpi_bus_private_data_handler(acpi_handle, void *);
int acpi_bus_get_private_data(acpi_handle, void **);
+int acpi_bus_attach_private_data(acpi_handle, void *);
void acpi_bus_no_hotplug(acpi_handle handle);
extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
extern int register_acpi_notifier(struct notifier_block *);
--
1.8.4.rc0.1.g8f6a3e5.dirty
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