diff options
| -rw-r--r-- | drivers/acpi/events/evxface.c | 2 | ||||
| -rw-r--r-- | drivers/acpi/executer/exfield.c | 8 | ||||
| -rw-r--r-- | drivers/acpi/executer/exmutex.c | 23 | ||||
| -rw-r--r-- | drivers/acpi/executer/exutils.c | 11 | ||||
| -rw-r--r-- | include/acpi/acinterp.h | 2 |
5 files changed, 33 insertions, 13 deletions
diff --git a/drivers/acpi/events/evxface.c b/drivers/acpi/events/evxface.c index dbf34a5fc1e..e210aa2d76d 100644 --- a/drivers/acpi/events/evxface.c +++ b/drivers/acpi/events/evxface.c @@ -816,7 +816,7 @@ acpi_status acpi_release_global_lock(u32 handle) { acpi_status status; - if (handle != acpi_gbl_global_lock_handle) { + if (!handle || (handle != acpi_gbl_global_lock_handle)) { return (AE_NOT_ACQUIRED); } diff --git a/drivers/acpi/executer/exfield.c b/drivers/acpi/executer/exfield.c index e66b367c4fb..da772cb91d7 100644 --- a/drivers/acpi/executer/exfield.c +++ b/drivers/acpi/executer/exfield.c @@ -122,7 +122,7 @@ acpi_ex_read_data_from_field(struct acpi_walk_state *walk_state, buffer.pointer), ACPI_READ | (obj_desc->field. attribute << 16)); - acpi_ex_release_global_lock(); + acpi_ex_release_global_lock(obj_desc->common_field.field_flags); goto exit; } @@ -177,7 +177,7 @@ acpi_ex_read_data_from_field(struct acpi_walk_state *walk_state, /* Read from the field */ status = acpi_ex_extract_from_field(obj_desc, buffer, (u32) length); - acpi_ex_release_global_lock(); + acpi_ex_release_global_lock(obj_desc->common_field.field_flags); exit: if (ACPI_FAILURE(status)) { @@ -284,7 +284,7 @@ acpi_ex_write_data_to_field(union acpi_operand_object *source_desc, (acpi_integer *) buffer, ACPI_WRITE | (obj_desc->field. attribute << 16)); - acpi_ex_release_global_lock(); + acpi_ex_release_global_lock(obj_desc->common_field.field_flags); *result_desc = buffer_desc; return_ACPI_STATUS(status); @@ -364,7 +364,7 @@ acpi_ex_write_data_to_field(union acpi_operand_object *source_desc, /* Write to the field */ status = acpi_ex_insert_into_field(obj_desc, buffer, length); - acpi_ex_release_global_lock(); + acpi_ex_release_global_lock(obj_desc->common_field.field_flags); /* Free temporary buffer if we used one */ diff --git a/drivers/acpi/executer/exmutex.c b/drivers/acpi/executer/exmutex.c index 32f24a8fba5..b8d035c00b6 100644 --- a/drivers/acpi/executer/exmutex.c +++ b/drivers/acpi/executer/exmutex.c @@ -156,6 +156,10 @@ acpi_ex_acquire_mutex_object(u16 timeout, ACPI_FUNCTION_TRACE_PTR(ex_acquire_mutex_object, obj_desc); + if (!obj_desc) { + return_ACPI_STATUS(AE_BAD_PARAMETER); + } + /* Support for multiple acquires by the owning thread */ if (obj_desc->mutex.thread_id == thread_id) { @@ -290,6 +294,10 @@ acpi_status acpi_ex_release_mutex_object(union acpi_operand_object *obj_desc) ACPI_FUNCTION_TRACE(ex_release_mutex_object); + if (obj_desc->mutex.acquisition_depth == 0) { + return (AE_NOT_ACQUIRED); + } + /* Match multiple Acquires with multiple Releases */ obj_desc->mutex.acquisition_depth--; @@ -387,17 +395,22 @@ acpi_ex_release_mutex(union acpi_operand_object *obj_desc, */ if (obj_desc->mutex.sync_level > walk_state->thread->current_sync_level) { ACPI_ERROR((AE_INFO, - "Cannot release Mutex [%4.4s], incorrect SyncLevel", - acpi_ut_get_node_name(obj_desc->mutex.node))); + "Cannot release Mutex [%4.4s], SyncLevel mismatch: mutex %d current %d", + acpi_ut_get_node_name(obj_desc->mutex.node), + obj_desc->mutex.sync_level, + walk_state->thread->current_sync_level)); return_ACPI_STATUS(AE_AML_MUTEX_ORDER); } status = acpi_ex_release_mutex_object(obj_desc); - /* Restore the original sync_level */ + if (obj_desc->mutex.acquisition_depth == 0) { + + /* Restore the original sync_level */ - walk_state->thread->current_sync_level = - obj_desc->mutex.original_sync_level; + walk_state->thread->current_sync_level = + obj_desc->mutex.original_sync_level; + } return_ACPI_STATUS(status); } diff --git a/drivers/acpi/executer/exutils.c b/drivers/acpi/executer/exutils.c index c40b191f70b..fd543ee547a 100644 --- a/drivers/acpi/executer/exutils.c +++ b/drivers/acpi/executer/exutils.c @@ -278,7 +278,8 @@ void acpi_ex_acquire_global_lock(u32 field_flags) * * FUNCTION: acpi_ex_release_global_lock * - * PARAMETERS: None + * PARAMETERS: field_flags - Flags with Lock rule: + * always_lock or never_lock * * RETURN: None * @@ -286,12 +287,18 @@ void acpi_ex_acquire_global_lock(u32 field_flags) * ******************************************************************************/ -void acpi_ex_release_global_lock(void) +void acpi_ex_release_global_lock(u32 field_flags) { acpi_status status; ACPI_FUNCTION_TRACE(ex_release_global_lock); + /* Only use the lock if the always_lock bit is set */ + + if (!(field_flags & AML_FIELD_LOCK_RULE_MASK)) { + return_VOID; + } + /* Release the global lock */ status = acpi_ex_release_mutex_object(acpi_gbl_global_lock_mutex); diff --git a/include/acpi/acinterp.h b/include/acpi/acinterp.h index 23863886e80..92eb0141ac8 100644 --- a/include/acpi/acinterp.h +++ b/include/acpi/acinterp.h @@ -464,7 +464,7 @@ void acpi_ex_truncate_for32bit_table(union acpi_operand_object *obj_desc); void acpi_ex_acquire_global_lock(u32 rule); -void acpi_ex_release_global_lock(void); +void acpi_ex_release_global_lock(u32 rule); void acpi_ex_eisa_id_to_string(u32 numeric_id, char *out_string); |