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path: root/drivers/acpi/events
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-rw-r--r--drivers/acpi/events/evgpe.c14
-rw-r--r--drivers/acpi/events/evxface.c47
2 files changed, 33 insertions, 28 deletions
diff --git a/drivers/acpi/events/evgpe.c b/drivers/acpi/events/evgpe.c
index f01d339407f8..c76c0583ca6a 100644
--- a/drivers/acpi/events/evgpe.c
+++ b/drivers/acpi/events/evgpe.c
@@ -382,7 +382,6 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
u32 status_reg;
u32 enable_reg;
acpi_cpu_flags flags;
- acpi_cpu_flags hw_flags;
acpi_native_uint i;
acpi_native_uint j;
@@ -394,8 +393,11 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
return (int_status);
}
- /* We need to hold the GPE lock now, hardware lock in the loop */
-
+ /*
+ * We need to obtain the GPE lock for both the data structs and registers
+ * Note: Not necessary to obtain the hardware lock, since the GPE registers
+ * are owned by the gpe_lock.
+ */
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
/* Examine all GPE blocks attached to this interrupt level */
@@ -413,8 +415,6 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
gpe_register_info = &gpe_block->register_info[i];
- hw_flags = acpi_os_acquire_lock(acpi_gbl_hardware_lock);
-
/* Read the Status Register */
status =
@@ -423,8 +423,6 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
&gpe_register_info->
status_address);
if (ACPI_FAILURE(status)) {
- acpi_os_release_lock(acpi_gbl_hardware_lock,
- hw_flags);
goto unlock_and_exit;
}
@@ -435,8 +433,6 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
&enable_reg,
&gpe_register_info->
enable_address);
- acpi_os_release_lock(acpi_gbl_hardware_lock, hw_flags);
-
if (ACPI_FAILURE(status)) {
goto unlock_and_exit;
}
diff --git a/drivers/acpi/events/evxface.c b/drivers/acpi/events/evxface.c
index 76c34a66e0e0..4f948df17ab9 100644
--- a/drivers/acpi/events/evxface.c
+++ b/drivers/acpi/events/evxface.c
@@ -414,12 +414,13 @@ acpi_remove_notify_handler(acpi_handle device,
if ((!device) ||
(!handler) || (handler_type > ACPI_MAX_NOTIFY_HANDLER_TYPE)) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
+ status = AE_BAD_PARAMETER;
+ goto exit;
}
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
+ goto exit;
}
/* Convert and validate the device handle */
@@ -427,7 +428,7 @@ acpi_remove_notify_handler(acpi_handle device,
node = acpi_ns_map_handle_to_node(device);
if (!node) {
status = AE_BAD_PARAMETER;
- goto unlock_and_exit;
+ goto unlock;
}
/* Root Object */
@@ -441,7 +442,7 @@ acpi_remove_notify_handler(acpi_handle device,
((handler_type & ACPI_DEVICE_NOTIFY) &&
!acpi_gbl_device_notify.handler)) {
status = AE_NOT_EXIST;
- goto unlock_and_exit;
+ goto unlock;
}
/* Make sure all deferred tasks are completed */
@@ -450,7 +451,7 @@ acpi_remove_notify_handler(acpi_handle device,
acpi_os_wait_events_complete(NULL);
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
+ goto exit;
}
if (handler_type & ACPI_SYSTEM_NOTIFY) {
@@ -473,7 +474,7 @@ acpi_remove_notify_handler(acpi_handle device,
if (!acpi_ev_is_notify_object(node)) {
status = AE_TYPE;
- goto unlock_and_exit;
+ goto unlock;
}
/* Check for an existing internal object */
@@ -481,7 +482,7 @@ acpi_remove_notify_handler(acpi_handle device,
obj_desc = acpi_ns_get_attached_object(node);
if (!obj_desc) {
status = AE_NOT_EXIST;
- goto unlock_and_exit;
+ goto unlock;
}
/* Object exists - make sure there's an existing handler */
@@ -491,7 +492,7 @@ acpi_remove_notify_handler(acpi_handle device,
if ((!notify_obj) ||
(notify_obj->notify.handler != handler)) {
status = AE_BAD_PARAMETER;
- goto unlock_and_exit;
+ goto unlock;
}
/* Make sure all deferred tasks are completed */
@@ -499,7 +500,7 @@ acpi_remove_notify_handler(acpi_handle device,
acpi_os_wait_events_complete(NULL);
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
+ goto exit;
}
/* Remove the handler */
@@ -512,7 +513,7 @@ acpi_remove_notify_handler(acpi_handle device,
if ((!notify_obj) ||
(notify_obj->notify.handler != handler)) {
status = AE_BAD_PARAMETER;
- goto unlock_and_exit;
+ goto unlock;
}
/* Make sure all deferred tasks are completed */
@@ -520,7 +521,7 @@ acpi_remove_notify_handler(acpi_handle device,
acpi_os_wait_events_complete(NULL);
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
+ goto exit;
}
/* Remove the handler */
@@ -529,8 +530,11 @@ acpi_remove_notify_handler(acpi_handle device,
}
}
- unlock_and_exit:
+unlock:
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+exit:
+ if (ACPI_FAILURE(status))
+ ACPI_EXCEPTION((AE_INFO, status, "Removing notify handler"));
return_ACPI_STATUS(status);
}
@@ -568,12 +572,13 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
/* Parameter validation */
if ((!address) || (type > ACPI_GPE_XRUPT_TYPE_MASK)) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
+ status = AE_BAD_PARAMETER;
+ goto exit;
}
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
+ goto exit;
}
/* Ensure that we have a valid GPE number */
@@ -581,7 +586,7 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
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 unlock;
}
/* Make sure that there isn't a handler there already */
@@ -589,7 +594,7 @@ 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 unlock;
}
/* Allocate and init handler object */
@@ -597,7 +602,7 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
handler = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_handler_info));
if (!handler) {
status = AE_NO_MEMORY;
- goto unlock_and_exit;
+ goto unlock;
}
handler->address = address;
@@ -608,7 +613,7 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
status = acpi_ev_disable_gpe(gpe_event_info);
if (ACPI_FAILURE(status)) {
- goto unlock_and_exit;
+ goto unlock;
}
/* Install the handler */
@@ -623,8 +628,12 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
- unlock_and_exit:
+unlock:
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
+exit:
+ if (ACPI_FAILURE(status))
+ ACPI_EXCEPTION((AE_INFO, status,
+ "Installing notify handler failed"));
return_ACPI_STATUS(status);
}
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