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-rw-r--r--drivers/acpi/acpica/acevents.h4
-rw-r--r--drivers/acpi/acpica/aclocal.h1
-rw-r--r--drivers/acpi/acpica/evgpe.c73
-rw-r--r--drivers/acpi/acpica/evxface.c77
-rw-r--r--drivers/acpi/acpica/evxfevnt.c62
5 files changed, 139 insertions, 78 deletions
diff --git a/drivers/acpi/acpica/acevents.h b/drivers/acpi/acpica/acevents.h
index e0e6affb0d80..36867cd70eac 100644
--- a/drivers/acpi/acpica/acevents.h
+++ b/drivers/acpi/acpica/acevents.h
@@ -82,6 +82,10 @@ acpi_ev_update_gpe_enable_mask(struct acpi_gpe_event_info *gpe_event_info);
acpi_status acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info);
+acpi_status acpi_raw_enable_gpe(struct acpi_gpe_event_info *gpe_event_info);
+
+acpi_status acpi_raw_disable_gpe(struct acpi_gpe_event_info *gpe_event_info);
+
struct acpi_gpe_event_info *acpi_ev_get_gpe_event_info(acpi_handle gpe_device,
u32 gpe_number);
diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h
index 1ee0bcf399aa..df85b53a674f 100644
--- a/drivers/acpi/acpica/aclocal.h
+++ b/drivers/acpi/acpica/aclocal.h
@@ -412,6 +412,7 @@ struct acpi_handler_info {
acpi_event_handler address; /* Address of handler, if any */
void *context; /* Context to be passed to handler */
struct acpi_namespace_node *method_node; /* Method node for this GPE level (saved) */
+ u8 orig_flags; /* Original misc info about this GPE */
};
union acpi_gpe_dispatch_info {
diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c
index 7a6a3e6f4be0..f226eac314db 100644
--- a/drivers/acpi/acpica/evgpe.c
+++ b/drivers/acpi/acpica/evgpe.c
@@ -137,6 +137,79 @@ acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info)
/*******************************************************************************
*
+ * FUNCTION: acpi_raw_enable_gpe
+ *
+ * PARAMETERS: gpe_event_info - GPE to enable
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Add a reference to a GPE. On the first reference, the GPE is
+ * hardware-enabled.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_raw_enable_gpe(struct acpi_gpe_event_info *gpe_event_info)
+{
+ acpi_status status = AE_OK;
+
+ if (gpe_event_info->runtime_count == ACPI_UINT8_MAX) {
+ return_ACPI_STATUS(AE_LIMIT);
+ }
+
+ gpe_event_info->runtime_count++;
+ if (gpe_event_info->runtime_count == 1) {
+ status = acpi_ev_update_gpe_enable_mask(gpe_event_info);
+ if (ACPI_SUCCESS(status)) {
+ status = acpi_ev_enable_gpe(gpe_event_info);
+ }
+
+ if (ACPI_FAILURE(status)) {
+ gpe_event_info->runtime_count--;
+ }
+ }
+
+ return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_raw_disable_gpe
+ *
+ * PARAMETERS: gpe_event_info - GPE to disable
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Remove a reference to a GPE. When the last reference is
+ * removed, the GPE is hardware-disabled.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_raw_disable_gpe(struct acpi_gpe_event_info *gpe_event_info)
+{
+ acpi_status status = AE_OK;
+
+ if (!gpe_event_info->runtime_count) {
+ return_ACPI_STATUS(AE_LIMIT);
+ }
+
+ gpe_event_info->runtime_count--;
+ if (!gpe_event_info->runtime_count) {
+ status = acpi_ev_update_gpe_enable_mask(gpe_event_info);
+ if (ACPI_SUCCESS(status)) {
+ status = acpi_hw_low_set_gpe(gpe_event_info,
+ ACPI_GPE_DISABLE);
+ }
+
+ if (ACPI_FAILURE(status)) {
+ gpe_event_info->runtime_count++;
+ }
+ }
+
+ return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
* FUNCTION: acpi_ev_low_get_gpe_info
*
* PARAMETERS: gpe_number - Raw GPE number
diff --git a/drivers/acpi/acpica/evxface.c b/drivers/acpi/acpica/evxface.c
index 4a531cdf7942..14e48add32fa 100644
--- a/drivers/acpi/acpica/evxface.c
+++ b/drivers/acpi/acpica/evxface.c
@@ -691,12 +691,22 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
return_ACPI_STATUS(status);
}
+ /* Allocate memory for the handler object */
+
+ handler = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_handler_info));
+ if (!handler) {
+ status = AE_NO_MEMORY;
+ goto unlock_and_exit;
+ }
+
+ flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
+
/* Ensure that we have a valid GPE number */
gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
if (!gpe_event_info) {
status = AE_BAD_PARAMETER;
- goto unlock_and_exit;
+ goto free_and_exit;
}
/* Make sure that there isn't a handler there already */
@@ -704,24 +714,30 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
ACPI_GPE_DISPATCH_HANDLER) {
status = AE_ALREADY_EXISTS;
- goto unlock_and_exit;
+ goto free_and_exit;
}
/* Allocate and init handler object */
- handler = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_handler_info));
- if (!handler) {
- status = AE_NO_MEMORY;
- goto unlock_and_exit;
- }
-
handler->address = address;
handler->context = context;
handler->method_node = gpe_event_info->dispatch.method_node;
+ handler->orig_flags = gpe_event_info->flags &
+ (ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK);
+
+ /*
+ * If the GPE is associated with a method and it cannot wake up the
+ * system from sleep states, it was enabled automatically during
+ * initialization, so it has to be disabled now to avoid spurious
+ * execution of the handler.
+ */
+
+ if ((handler->orig_flags & ACPI_GPE_DISPATCH_METHOD)
+ && !(gpe_event_info->flags & ACPI_GPE_CAN_WAKE))
+ (void)acpi_raw_disable_gpe(gpe_event_info);
/* Install the handler */
- flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
gpe_event_info->dispatch.handler = handler;
/* Setup up dispatch flags to indicate handler (vs. method) */
@@ -735,6 +751,11 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
return_ACPI_STATUS(status);
+
+free_and_exit:
+ acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
+ ACPI_FREE(handler);
+ goto unlock_and_exit;
}
ACPI_EXPORT_SYMBOL(acpi_install_gpe_handler)
@@ -770,11 +791,17 @@ acpi_remove_gpe_handler(acpi_handle gpe_device,
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
+ /* Make sure all deferred tasks are completed */
+
+ acpi_os_wait_events_complete(NULL);
+
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
+ flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
+
/* Ensure that we have a valid GPE number */
gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
@@ -798,34 +825,34 @@ acpi_remove_gpe_handler(acpi_handle gpe_device,
goto unlock_and_exit;
}
- /* Make sure all deferred tasks are completed */
-
- (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
- acpi_os_wait_events_complete(NULL);
- status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
/* Remove the handler */
- flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
handler = gpe_event_info->dispatch.handler;
/* Restore Method node (if any), set dispatch flags */
gpe_event_info->dispatch.method_node = handler->method_node;
- gpe_event_info->flags &= ~ACPI_GPE_DISPATCH_MASK; /* Clear bits */
- if (handler->method_node) {
- gpe_event_info->flags |= ACPI_GPE_DISPATCH_METHOD;
- }
- acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
+ gpe_event_info->flags &=
+ ~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK);
+ gpe_event_info->flags |= handler->orig_flags;
+
+ /*
+ * If the GPE was previously associated with a method and it cannot wake
+ * up the system from sleep states, it should be enabled at this point
+ * to restore the post-initialization configuration.
+ */
+
+ if ((handler->orig_flags & ACPI_GPE_DISPATCH_METHOD)
+ && !(gpe_event_info->flags & ACPI_GPE_CAN_WAKE))
+ (void)acpi_raw_enable_gpe(gpe_event_info);
/* Now we can free the handler object */
ACPI_FREE(handler);
- unlock_and_exit:
+unlock_and_exit:
+ acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
+
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
return_ACPI_STATUS(status);
}
diff --git a/drivers/acpi/acpica/evxfevnt.c b/drivers/acpi/acpica/evxfevnt.c
index 53d591a11138..0fb9e94878d9 100644
--- a/drivers/acpi/acpica/evxfevnt.c
+++ b/drivers/acpi/acpica/evxfevnt.c
@@ -291,7 +291,7 @@ ACPI_EXPORT_SYMBOL(acpi_gpe_wakeup)
******************************************************************************/
acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number)
{
- acpi_status status = AE_OK;
+ acpi_status status = AE_BAD_PARAMETER;
struct acpi_gpe_event_info *gpe_event_info;
acpi_cpu_flags flags;
@@ -302,28 +302,10 @@ acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number)
/* Ensure that we have a valid GPE number */
gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
- if (!gpe_event_info) {
- status = AE_BAD_PARAMETER;
- goto unlock_and_exit;
+ if (gpe_event_info) {
+ status = acpi_raw_enable_gpe(gpe_event_info);
}
- if (gpe_event_info->runtime_count == ACPI_UINT8_MAX) {
- status = AE_LIMIT; /* Too many references */
- goto unlock_and_exit;
- }
-
- gpe_event_info->runtime_count++;
- if (gpe_event_info->runtime_count == 1) {
- status = acpi_ev_update_gpe_enable_mask(gpe_event_info);
- if (ACPI_SUCCESS(status)) {
- status = acpi_ev_enable_gpe(gpe_event_info);
- }
- if (ACPI_FAILURE(status)) {
- gpe_event_info->runtime_count--;
- }
- }
-
-unlock_and_exit:
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
return_ACPI_STATUS(status);
}
@@ -345,7 +327,7 @@ ACPI_EXPORT_SYMBOL(acpi_enable_gpe)
******************************************************************************/
acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number)
{
- acpi_status status = AE_OK;
+ acpi_status status = AE_BAD_PARAMETER;
struct acpi_gpe_event_info *gpe_event_info;
acpi_cpu_flags flags;
@@ -356,32 +338,10 @@ acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number)
/* Ensure that we have a valid GPE number */
gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
- if (!gpe_event_info) {
- status = AE_BAD_PARAMETER;
- goto unlock_and_exit;
- }
-
- /* Hardware-disable a runtime GPE on removal of the last reference */
-
- if (!gpe_event_info->runtime_count) {
- status = AE_LIMIT; /* There are no references to remove */
- goto unlock_and_exit;
+ if (gpe_event_info) {
+ status = acpi_raw_disable_gpe(gpe_event_info) ;
}
- gpe_event_info->runtime_count--;
- if (!gpe_event_info->runtime_count) {
- status = acpi_ev_update_gpe_enable_mask(gpe_event_info);
- if (ACPI_SUCCESS(status)) {
- status =
- acpi_hw_low_set_gpe(gpe_event_info,
- ACPI_GPE_DISABLE);
- }
- if (ACPI_FAILURE(status)) {
- gpe_event_info->runtime_count++;
- }
- }
-
-unlock_and_exit:
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
return_ACPI_STATUS(status);
}
@@ -408,7 +368,6 @@ acpi_status acpi_gpe_can_wake(acpi_handle gpe_device, u32 gpe_number)
acpi_status status = AE_OK;
struct acpi_gpe_event_info *gpe_event_info;
acpi_cpu_flags flags;
- u8 disable = 0;
ACPI_FUNCTION_TRACE(acpi_gpe_can_wake);
@@ -427,15 +386,12 @@ acpi_status acpi_gpe_can_wake(acpi_handle gpe_device, u32 gpe_number)
}
gpe_event_info->flags |= ACPI_GPE_CAN_WAKE;
- disable = (gpe_event_info->flags & ACPI_GPE_DISPATCH_METHOD)
- && gpe_event_info->runtime_count;
+ if (gpe_event_info->flags & ACPI_GPE_DISPATCH_METHOD) {
+ (void)acpi_raw_disable_gpe(gpe_event_info);
+ }
unlock_and_exit:
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
-
- if (disable)
- status = acpi_disable_gpe(gpe_device, gpe_number);
-
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_gpe_can_wake)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 12:25:36 +0000