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Date: Mon, 26 Jan 2015 16:58:48 +0800
From: Lv Zheng <lv.zheng@...el.com>
To: "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
Len Brown <len.brown@...el.com>
Cc: Lv Zheng <lv.zheng@...el.com>, Lv Zheng <zetalog@...il.com>,
<linux-kernel@...r.kernel.org>, linux-acpi@...r.kernel.org,
Octavian Purdila <octavian.purdila@...el.com>,
Tony Luck <tony.luck@...el.com>,
Fenghua Yu <fenghua.yu@...el.com>, linux-pci@...r.kernel.org,
linux-ia64@...r.kernel.org
Subject: [RFC PATCH 1/2] ACPI: Introduce acpi_unload_parent_table() usages in Linux kernel.
ACPICA has implemented acpi_unload_parent_table() which can exactly replace
the acpi_get_id()/acpi_unload_table_id() implemented in Linux kernel. The
acpi_unload_parent_table() has been unit tested in ACPICA simulation
environment.
This patch can also help to reduce the source code differences between
Linux and ACPICA.
Signed-off-by: Lv Zheng <lv.zheng@...el.com>
Acked-by: Bjorn Helgaas <bhelgaas@...gle.com>
Cc: Octavian Purdila <octavian.purdila@...el.com>
Cc: Tony Luck <tony.luck@...el.com>
Cc: Fenghua Yu <fenghua.yu@...el.com>
Cc: linux-pci@...r.kernel.org
Cc: linux-ia64@...r.kernel.org
---
drivers/acpi/acpica/nsxfobj.c | 44 -----------------------------------
drivers/acpi/acpica/tbxface.c | 46 -------------------------------------
drivers/pci/hotplug/sgi_hotplug.c | 13 ++++++-----
include/acpi/acpixf.h | 6 -----
4 files changed, 7 insertions(+), 102 deletions(-)
diff --git a/drivers/acpi/acpica/nsxfobj.c b/drivers/acpi/acpica/nsxfobj.c
index dae9401..51a8329 100644
--- a/drivers/acpi/acpica/nsxfobj.c
+++ b/drivers/acpi/acpica/nsxfobj.c
@@ -53,50 +53,6 @@ ACPI_MODULE_NAME("nsxfobj")
/*******************************************************************************
*
- * FUNCTION: acpi_get_id
- *
- * PARAMETERS: Handle - Handle of object whose id is desired
- * ret_id - Where the id will be placed
- *
- * RETURN: Status
- *
- * DESCRIPTION: This routine returns the owner id associated with a handle
- *
- ******************************************************************************/
-acpi_status acpi_get_id(acpi_handle handle, acpi_owner_id * ret_id)
-{
- struct acpi_namespace_node *node;
- acpi_status status;
-
- /* Parameter Validation */
-
- if (!ret_id) {
- return (AE_BAD_PARAMETER);
- }
-
- status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE(status)) {
- return (status);
- }
-
- /* Convert and validate the handle */
-
- node = acpi_ns_validate_handle(handle);
- if (!node) {
- (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
- return (AE_BAD_PARAMETER);
- }
-
- *ret_id = node->owner_id;
-
- status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
- return (status);
-}
-
-ACPI_EXPORT_SYMBOL(acpi_get_id)
-
-/*******************************************************************************
- *
* FUNCTION: acpi_get_type
*
* PARAMETERS: handle - Handle of object whose type is desired
diff --git a/drivers/acpi/acpica/tbxface.c b/drivers/acpi/acpica/tbxface.c
index 9520ae1..0f9dd80 100644
--- a/drivers/acpi/acpica/tbxface.c
+++ b/drivers/acpi/acpica/tbxface.c
@@ -265,52 +265,6 @@ ACPI_EXPORT_SYMBOL(acpi_get_table_header)
/*******************************************************************************
*
- * FUNCTION: acpi_unload_table_id
- *
- * PARAMETERS: id - Owner ID of the table to be removed.
- *
- * RETURN: Status
- *
- * DESCRIPTION: This routine is used to force the unload of a table (by id)
- *
- ******************************************************************************/
-acpi_status acpi_unload_table_id(acpi_owner_id id)
-{
- int i;
- acpi_status status = AE_NOT_EXIST;
-
- ACPI_FUNCTION_TRACE(acpi_unload_table_id);
-
- status = acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
- /* Find table in the global table list */
- for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) {
- if (id != acpi_gbl_root_table_list.tables[i].owner_id) {
- continue;
- }
- /*
- * Delete all namespace objects owned by this table. Note that these
- * objects can appear anywhere in the namespace by virtue of the AML
- * "Scope" operator. Thus, we need to track ownership by an ID, not
- * simply a position within the hierarchy
- */
- acpi_tb_delete_namespace_by_owner(i);
- status = acpi_tb_release_owner_id(i);
- acpi_tb_set_table_loaded_flag(i, FALSE);
- break;
- }
-
- (void)acpi_ut_release_mutex(ACPI_MTX_INTERPRETER);
- return_ACPI_STATUS(status);
-}
-
-ACPI_EXPORT_SYMBOL(acpi_unload_table_id)
-
-/*******************************************************************************
- *
* FUNCTION: acpi_get_table_with_size
*
* PARAMETERS: signature - ACPI signature of needed table
diff --git a/drivers/pci/hotplug/sgi_hotplug.c b/drivers/pci/hotplug/sgi_hotplug.c
index bada2099..c32fb78 100644
--- a/drivers/pci/hotplug/sgi_hotplug.c
+++ b/drivers/pci/hotplug/sgi_hotplug.c
@@ -475,7 +475,7 @@ static int disable_slot(struct hotplug_slot *bss_hotplug_slot)
struct slot *slot = bss_hotplug_slot->private;
struct pci_dev *dev, *temp;
int rc;
- acpi_owner_id ssdt_id = 0;
+ acpi_handle ssdt_hdl = NULL;
/* Acquire update access to the bus */
mutex_lock(&sn_hotplug_mutex);
@@ -522,7 +522,7 @@ static int disable_slot(struct hotplug_slot *bss_hotplug_slot)
if (ACPI_SUCCESS(ret) &&
(adr>>16) == (slot->device_num + 1)) {
/* retain the owner id */
- acpi_get_id(chandle, &ssdt_id);
+ ssdt_hdl = chandle;
ret = acpi_bus_get_device(chandle,
&device);
@@ -547,12 +547,13 @@ static int disable_slot(struct hotplug_slot *bss_hotplug_slot)
pci_unlock_rescan_remove();
/* Remove the SSDT for the slot from the ACPI namespace */
- if (SN_ACPI_BASE_SUPPORT() && ssdt_id) {
+ if (SN_ACPI_BASE_SUPPORT() && ssdt_hdl) {
acpi_status ret;
- ret = acpi_unload_table_id(ssdt_id);
+ ret = acpi_unload_parent_table(ssdt_hdl);
if (ACPI_FAILURE(ret)) {
- printk(KERN_ERR "%s: acpi_unload_table_id failed (0x%x) for id %d\n",
- __func__, ret, ssdt_id);
+ acpi_handle_err(ssdt_hdl,
+ "%s: acpi_unload_parent_table failed (0x%x)\n",
+ __func__, ret);
/* try to continue on */
}
}
diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
index 5ba7846..5dd21bc 100644
--- a/include/acpi/acpixf.h
+++ b/include/acpi/acpixf.h
@@ -891,12 +891,6 @@ ACPI_APP_DEPENDENT_RETURN_VOID(ACPI_PRINTF_LIKE(1)
ACPI_GLOBAL(u8, acpi_gbl_permanent_mmap);
ACPI_EXTERNAL_RETURN_STATUS(acpi_status
- acpi_get_id(acpi_handle object,
- acpi_owner_id * out_type))
-
-ACPI_EXTERNAL_RETURN_STATUS(acpi_status acpi_unload_table_id(acpi_owner_id id))
-
-ACPI_EXTERNAL_RETURN_STATUS(acpi_status
acpi_get_table_with_size(acpi_string signature,
u32 instance,
struct acpi_table_header
--
1.7.10
--
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