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Message-ID: <8451567.NyiUUSuA9g@rjwysocki.net>
Date: Mon, 12 Aug 2024 15:11:42 +0200
From: "Rafael J. Wysocki" <rjw@...ysocki.net>
To: Linux ACPI <linux-acpi@...r.kernel.org>
Cc: Hans de Goede <hdegoede@...hat.com>, LKML <linux-kernel@...r.kernel.org>,
"Rafael J. Wysocki" <rafael@...nel.org>, Armin Wolf <w_armin@....de>
Subject:
[PATCH v1 2/3] ACPICA: Add a depth argument to acpi_execute_reg_methods()
From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
A subsequent change will need to pass a depth argument to
acpi_execute_reg_methods(), so prepare that function for it.
No intentional functional changes.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Reviewed-by: Hans de Goede <hdegoede@...hat.com>
---
This is mostly an ACPICA change, but because it is specifically related
to the EC and it is part of a regression fix, it will be backported to
upstream ACPICA after receiving enough testing coverage in Linux.
---
drivers/acpi/acpica/acevents.h | 2 +-
drivers/acpi/acpica/evregion.c | 6 ++++--
drivers/acpi/acpica/evxfregn.c | 10 +++++++---
drivers/acpi/ec.c | 3 ++-
include/acpi/acpixf.h | 1 +
5 files changed, 15 insertions(+), 7 deletions(-)
Index: linux-pm/drivers/acpi/acpica/acevents.h
===================================================================
--- linux-pm.orig/drivers/acpi/acpica/acevents.h
+++ linux-pm/drivers/acpi/acpica/acevents.h
@@ -188,7 +188,7 @@ acpi_ev_detach_region(union acpi_operand
u8 acpi_ns_is_locked);
void
-acpi_ev_execute_reg_methods(struct acpi_namespace_node *node,
+acpi_ev_execute_reg_methods(struct acpi_namespace_node *node, u32 max_depth,
acpi_adr_space_type space_id, u32 function);
acpi_status
Index: linux-pm/drivers/acpi/acpica/evregion.c
===================================================================
--- linux-pm.orig/drivers/acpi/acpica/evregion.c
+++ linux-pm/drivers/acpi/acpica/evregion.c
@@ -65,6 +65,7 @@ acpi_status acpi_ev_initialize_op_region
acpi_gbl_default_address_spaces
[i])) {
acpi_ev_execute_reg_methods(acpi_gbl_root_node,
+ ACPI_UINT32_MAX,
acpi_gbl_default_address_spaces
[i], ACPI_REG_CONNECT);
}
@@ -672,6 +673,7 @@ cleanup1:
* FUNCTION: acpi_ev_execute_reg_methods
*
* PARAMETERS: node - Namespace node for the device
+ * max_depth - Depth to which search for _REG
* space_id - The address space ID
* function - Passed to _REG: On (1) or Off (0)
*
@@ -683,7 +685,7 @@ cleanup1:
******************************************************************************/
void
-acpi_ev_execute_reg_methods(struct acpi_namespace_node *node,
+acpi_ev_execute_reg_methods(struct acpi_namespace_node *node, u32 max_depth,
acpi_adr_space_type space_id, u32 function)
{
struct acpi_reg_walk_info info;
@@ -717,7 +719,7 @@ acpi_ev_execute_reg_methods(struct acpi_
* regions and _REG methods. (i.e. handlers must be installed for all
* regions of this Space ID before we can run any _REG methods)
*/
- (void)acpi_ns_walk_namespace(ACPI_TYPE_ANY, node, ACPI_UINT32_MAX,
+ (void)acpi_ns_walk_namespace(ACPI_TYPE_ANY, node, max_depth,
ACPI_NS_WALK_UNLOCK, acpi_ev_reg_run, NULL,
&info, NULL);
Index: linux-pm/drivers/acpi/acpica/evxfregn.c
===================================================================
--- linux-pm.orig/drivers/acpi/acpica/evxfregn.c
+++ linux-pm/drivers/acpi/acpica/evxfregn.c
@@ -85,7 +85,8 @@ acpi_install_address_space_handler_inter
/* Run all _REG methods for this address space */
if (run_reg) {
- acpi_ev_execute_reg_methods(node, space_id, ACPI_REG_CONNECT);
+ acpi_ev_execute_reg_methods(node, ACPI_UINT32_MAX, space_id,
+ ACPI_REG_CONNECT);
}
unlock_and_exit:
@@ -263,6 +264,7 @@ ACPI_EXPORT_SYMBOL(acpi_remove_address_s
* FUNCTION: acpi_execute_reg_methods
*
* PARAMETERS: device - Handle for the device
+ * max_depth - Depth to which search for _REG
* space_id - The address space ID
*
* RETURN: Status
@@ -271,7 +273,8 @@ ACPI_EXPORT_SYMBOL(acpi_remove_address_s
*
******************************************************************************/
acpi_status
-acpi_execute_reg_methods(acpi_handle device, acpi_adr_space_type space_id)
+acpi_execute_reg_methods(acpi_handle device, u32 max_depth,
+ acpi_adr_space_type space_id)
{
struct acpi_namespace_node *node;
acpi_status status;
@@ -296,7 +299,8 @@ acpi_execute_reg_methods(acpi_handle dev
/* Run all _REG methods for this address space */
- acpi_ev_execute_reg_methods(node, space_id, ACPI_REG_CONNECT);
+ acpi_ev_execute_reg_methods(node, max_depth, space_id,
+ ACPI_REG_CONNECT);
} else {
status = AE_BAD_PARAMETER;
}
Index: linux-pm/include/acpi/acpixf.h
===================================================================
--- linux-pm.orig/include/acpi/acpixf.h
+++ linux-pm/include/acpi/acpixf.h
@@ -660,6 +660,7 @@ ACPI_EXTERNAL_RETURN_STATUS(acpi_status
void *context))
ACPI_EXTERNAL_RETURN_STATUS(acpi_status
acpi_execute_reg_methods(acpi_handle device,
+ u32 nax_depth,
acpi_adr_space_type
space_id))
ACPI_EXTERNAL_RETURN_STATUS(acpi_status
Index: linux-pm/drivers/acpi/ec.c
===================================================================
--- linux-pm.orig/drivers/acpi/ec.c
+++ linux-pm/drivers/acpi/ec.c
@@ -1549,7 +1549,7 @@ static int ec_install_handlers(struct ac
}
if (call_reg && !test_bit(EC_FLAGS_EC_REG_CALLED, &ec->flags)) {
- acpi_execute_reg_methods(scope_handle, ACPI_ADR_SPACE_EC);
+ acpi_execute_reg_methods(scope_handle, ACPI_UINT32_MAX, ACPI_ADR_SPACE_EC);
set_bit(EC_FLAGS_EC_REG_CALLED, &ec->flags);
}
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