9 files changed, 152 insertions, 163 deletions

diff --git a/drivers/acpi/events/evevent.c b/drivers/acpi/events/evevent.c
index c56c5c6ea77b..6ddf938290f1 100644
--- a/drivers/acpi/events/evevent.c
+++ b/drivers/acpi/events/evevent.c
@@ -72,8 +72,8 @@ acpi_status acpi_ev_initialize_events(void)
 
         /*
          * Initialize the Fixed and General Purpose Events. This is done prior to
-         * enabling SCIs to prevent interrupts from occurring before the handlers are
-         * installed.
+         * enabling SCIs to prevent interrupts from occurring before the handlers
+         * are installed.
          */
         status = acpi_ev_fixed_event_initialize();
         if (ACPI_FAILURE(status)) {
@@ -192,8 +192,8 @@ static acpi_status acpi_ev_fixed_event_initialize(void)
         acpi_status status;
 
         /*
-         * Initialize the structure that keeps track of fixed event handlers
-         * and enable the fixed events.
+         * Initialize the structure that keeps track of fixed event handlers and
+         * enable the fixed events.
          */
         for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) {
                 acpi_gbl_fixed_event_handlers[i].handler = NULL;
@@ -237,7 +237,7 @@ u32 acpi_ev_fixed_event_detect(void)
 
         /*
          * Read the fixed feature status and enable registers, as all the cases
-         * depend on their values.  Ignore errors here.
+         * depend on their values. Ignore errors here.
          */
         (void)acpi_hw_register_read(ACPI_REGISTER_PM1_STATUS, &fixed_status);
         (void)acpi_hw_register_read(ACPI_REGISTER_PM1_ENABLE, &fixed_enable);
@@ -291,8 +291,8 @@ static u32 acpi_ev_fixed_event_dispatch(u32 event)
                                 status_register_id, 1);
 
         /*
-         * Make sure we've got a handler.  If not, report an error.
-         * The event is disabled to prevent further interrupts.
+         * Make sure we've got a handler. If not, report an error. The event is
+         * disabled to prevent further interrupts.
          */
         if (NULL == acpi_gbl_fixed_event_handlers[event].handler) {
                 (void)acpi_set_register(acpi_gbl_fixed_event_info[event].
diff --git a/drivers/acpi/events/evgpe.c b/drivers/acpi/events/evgpe.c
index f45c74fe745e..12b49d312ad3 100644
--- a/drivers/acpi/events/evgpe.c
+++ b/drivers/acpi/events/evgpe.c
@@ -125,7 +125,7 @@ acpi_ev_update_gpe_enable_masks(struct acpi_gpe_event_info *gpe_event_info,
             (1 <<
              (gpe_event_info->gpe_number - gpe_register_info->base_gpe_number));
 
-        /* 1) Disable case.  Simply clear all enable bits */
+        /* 1) Disable case. Simply clear all enable bits */
 
         if (type == ACPI_GPE_DISABLE) {
                 ACPI_CLEAR_BIT(gpe_register_info->enable_for_wake,
@@ -134,7 +134,7 @@ acpi_ev_update_gpe_enable_masks(struct acpi_gpe_event_info *gpe_event_info,
                 return_ACPI_STATUS(AE_OK);
         }
 
-        /* 2) Enable case.  Set/Clear the appropriate enable bits */
+        /* 2) Enable case. Set/Clear the appropriate enable bits */
 
         switch (gpe_event_info->flags & ACPI_GPE_TYPE_MASK) {
         case ACPI_GPE_TYPE_WAKE:
@@ -295,7 +295,7 @@ acpi_status acpi_ev_disable_gpe(struct acpi_gpe_event_info *gpe_event_info)
  *
  * FUNCTION:    acpi_ev_get_gpe_event_info
  *
- * PARAMETERS:  gpe_device          - Device node.  NULL for GPE0/GPE1
+ * PARAMETERS:  gpe_device          - Device node. NULL for GPE0/GPE1
  *              gpe_number          - Raw GPE number
  *
  * RETURN:      A GPE event_info struct. NULL if not a valid GPE
@@ -372,7 +372,7 @@ struct acpi_gpe_event_info *acpi_ev_get_gpe_event_info(acpi_handle gpe_device,
  *
  * RETURN:      INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED
  *
- * DESCRIPTION: Detect if any GP events have occurred.  This function is
+ * DESCRIPTION: Detect if any GP events have occurred. This function is
  *              executed at interrupt level.
  *
  ******************************************************************************/
@@ -400,8 +400,8 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
 
         /*
          * 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.
+         * 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);
 
@@ -410,9 +410,8 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
         gpe_block = gpe_xrupt_list->gpe_block_list_head;
         while (gpe_block) {
                 /*
-                 * Read all of the 8-bit GPE status and enable registers
-                 * in this GPE block, saving all of them.
-                 * Find all currently active GP events.
+                 * Read all of the 8-bit GPE status and enable registers in this GPE
+                 * block, saving all of them. Find all currently active GP events.
                  */
                 for (i = 0; i < gpe_block->register_count; i++) {
 
@@ -527,8 +526,8 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
         (void)acpi_ev_enable_gpe(gpe_event_info, FALSE);
 
         /*
-         * Take a snapshot of the GPE info for this level - we copy the
-         * info to prevent a race condition with remove_handler/remove_block.
+         * Take a snapshot of the GPE info for this level - we copy the info to
+         * prevent a race condition with remove_handler/remove_block.
          */
         ACPI_MEMCPY(&local_gpe_event_info, gpe_event_info,
                     sizeof(struct acpi_gpe_event_info));
@@ -539,8 +538,8 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
         }
 
         /*
-         * Must check for control method type dispatch one more
-         * time to avoid race with ev_gpe_install_handler
+         * Must check for control method type dispatch one more time to avoid a
+         * race with ev_gpe_install_handler
          */
         if ((local_gpe_event_info.flags & ACPI_GPE_DISPATCH_MASK) ==
             ACPI_GPE_DISPATCH_METHOD) {
@@ -584,8 +583,8 @@ static void acpi_ev_asynch_enable_gpe(void *context)
         if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
             ACPI_GPE_LEVEL_TRIGGERED) {
                 /*
-                 * GPE is level-triggered, we clear the GPE status bit after
-                 * handling the event.
+                 * GPE is level-triggered, we clear the GPE status bit after handling
+                 * the event.
                  */
                 status = acpi_hw_clear_gpe(gpe_event_info);
                 if (ACPI_FAILURE(status)) {
@@ -624,7 +623,7 @@ acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
         acpi_os_gpe_count(gpe_number);
 
         /*
-         * If edge-triggered, clear the GPE status bit now.  Note that
+         * If edge-triggered, clear the GPE status bit now. Note that
          * level-triggered events are cleared after the GPE is serviced.
          */
         if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
@@ -650,7 +649,8 @@ acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
 
                 /*
                  * Invoke the installed handler (at interrupt level)
-                 * Ignore return status for now.  TBD: leave GPE disabled on error?
+                 * Ignore return status for now.
+                 * TBD: leave GPE disabled on error?
                  */
                 (void)gpe_event_info->dispatch.handler->address(gpe_event_info->
                                                                 dispatch.
@@ -708,7 +708,7 @@ acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
                             gpe_number));
 
                 /*
-                 * Disable the GPE. The GPE will remain disabled until the ACPI
+                 * Disable the GPE. The GPE will remain disabled until the ACPICA
                  * Core Subsystem is restarted, or a handler is installed.
                  */
                 status = acpi_ev_disable_gpe(gpe_event_info);
diff --git a/drivers/acpi/events/evgpeblk.c b/drivers/acpi/events/evgpeblk.c
index 73c058e2f5c2..7537cda54050 100644
--- a/drivers/acpi/events/evgpeblk.c
+++ b/drivers/acpi/events/evgpeblk.c
@@ -309,17 +309,17 @@ acpi_ev_save_method_info(acpi_handle obj_handle,
              (gpe_block->block_base_number +
               (gpe_block->register_count * 8)))) {
                 /*
-                 * Not valid for this GPE block, just ignore it
-                 * However, it may be valid for a different GPE block, since GPE0 and GPE1
-                 * methods both appear under \_GPE.
+                 * Not valid for this GPE block, just ignore it. However, it may be
+                 * valid for a different GPE block, since GPE0 and GPE1 methods both
+                 * appear under \_GPE.
                  */
                 return_ACPI_STATUS(AE_OK);
         }
 
         /*
-         * Now we can add this information to the gpe_event_info block
-         * for use during dispatch of this GPE. Default type is RUNTIME, although
-         * this may change when the _PRW methods are executed later.
+         * Now we can add this information to the gpe_event_info block for use
+         * during dispatch of this GPE. Default type is RUNTIME, although this may
+         * change when the _PRW methods are executed later.
          */
         gpe_event_info =
             &gpe_block->event_info[gpe_number - gpe_block->block_base_number];
@@ -394,8 +394,8 @@ acpi_ev_match_prw_and_gpe(acpi_handle obj_handle,
         gpe_block = gpe_info->gpe_block;
 
         /*
-         * The _PRW object must return a package, we are only interested
-         * in the first element
+         * The _PRW object must return a package, we are only interested in the
+         * first element
          */
         obj_desc = pkg_desc->package.elements[0];
 
@@ -434,7 +434,7 @@ acpi_ev_match_prw_and_gpe(acpi_handle obj_handle,
         /*
          * Is this GPE within this block?
          *
-         * TRUE iff these conditions are true:
+         * TRUE if and only if these conditions are true:
          *     1) The GPE devices match.
          *     2) The GPE index(number) is within the range of the Gpe Block
          *          associated with the GPE device.
@@ -457,6 +457,7 @@ acpi_ev_match_prw_and_gpe(acpi_handle obj_handle,
                 if (ACPI_FAILURE(status)) {
                         goto cleanup;
                 }
+
                 status =
                     acpi_ev_update_gpe_enable_masks(gpe_event_info,
                                                     ACPI_GPE_DISABLE);
@@ -476,9 +477,9 @@ acpi_ev_match_prw_and_gpe(acpi_handle obj_handle,
  * RETURN:      A GPE interrupt block
  *
  * DESCRIPTION: Get or Create a GPE interrupt block. There is one interrupt
- *              block per unique interrupt level used for GPEs.
- *              Should be called only when the GPE lists are semaphore locked
- *              and not subject to change.
+ *              block per unique interrupt level used for GPEs. Should be
+ *              called only when the GPE lists are semaphore locked and not
+ *              subject to change.
  *
  ******************************************************************************/
 
@@ -608,8 +609,9 @@ acpi_ev_delete_gpe_xrupt(struct acpi_gpe_xrupt_info *gpe_xrupt)
  *
  * FUNCTION:    acpi_ev_install_gpe_block
  *
- * PARAMETERS:  gpe_block       - New GPE block
- *              interrupt_number - Xrupt to be associated with this GPE block
+ * PARAMETERS:  gpe_block               - New GPE block
+ *              interrupt_number        - Xrupt to be associated with this
+ *                                        GPE block
  *
  * RETURN:      Status
  *
@@ -666,7 +668,7 @@ acpi_ev_install_gpe_block(struct acpi_gpe_block_info *gpe_block,
  *
  * FUNCTION:    acpi_ev_delete_gpe_block
  *
- * PARAMETERS:  gpe_block       - Existing GPE block
+ * PARAMETERS:  gpe_block           - Existing GPE block
  *
  * RETURN:      Status
  *
@@ -786,9 +788,9 @@ acpi_ev_create_gpe_info_blocks(struct acpi_gpe_block_info *gpe_block)
 
         /*
          * Initialize the GPE Register and Event structures. A goal of these
-         * tables is to hide the fact that there are two separate GPE register sets
-         * in a given GPE hardware block, the status registers occupy the first half,
-         * and the enable registers occupy the second half.
+         * tables is to hide the fact that there are two separate GPE register
+         * sets in a given GPE hardware block, the status registers occupy the
+         * first half, and the enable registers occupy the second half.
          */
         this_register = gpe_register_info;
         this_event = gpe_event_info;
diff --git a/drivers/acpi/events/evmisc.c b/drivers/acpi/events/evmisc.c
index 82c457fa5a1f..dbac5b3248a0 100644
--- a/drivers/acpi/events/evmisc.c
+++ b/drivers/acpi/events/evmisc.c
@@ -148,7 +148,9 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node * node,
                         break;
 
                 default:
+
                         /* All other types are not supported */
+
                         return (AE_TYPE);
                 }
         }
@@ -189,9 +191,8 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node * node,
                         acpi_ut_delete_generic_state(notify_info);
                 }
         } else {
-                /*
-                 * There is no notify handler (per-device or system) for this device.
-                 */
+                /* There is no notify handler (per-device or system) for this device */
+
                 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
                                   "No notify handler for Notify (%4.4s, %X) node %p\n",
                                   acpi_ut_get_node_name(node), notify_value,
@@ -225,9 +226,8 @@ static void ACPI_SYSTEM_XFACE acpi_ev_notify_dispatch(void *context)
         ACPI_FUNCTION_ENTRY();
 
         /*
-         * We will invoke a global notify handler if installed.
-         * This is done _before_ we invoke the per-device handler attached
-         * to the device.
+         * We will invoke a global notify handler if installed. This is done
+         * _before_ we invoke the per-device handler attached to the device.
          */
         if (notify_info->notify.value <= ACPI_MAX_SYS_NOTIFY) {
 
@@ -339,11 +339,10 @@ acpi_status acpi_ev_init_global_lock_handler(void)
                                                   NULL);
 
         /*
-         * If the global lock does not exist on this platform, the attempt
-         * to enable GBL_STATUS will fail (the GBL_ENABLE bit will not stick)
-         * Map to AE_OK, but mark global lock as not present.
-         * Any attempt to actually use the global lock will be flagged
-         * with an error.
+         * If the global lock does not exist on this platform, the attempt to
+         * enable GBL_STATUS will fail (the GBL_ENABLE bit will not stick).
+         * Map to AE_OK, but mark global lock as not present. Any attempt to
+         * actually use the global lock will be flagged with an error.
          */
         if (status == AE_NO_HARDWARE_RESPONSE) {
                 ACPI_ERROR((AE_INFO,
@@ -452,8 +451,8 @@ acpi_status acpi_ev_acquire_global_lock(u16 timeout)
         }
 
         /*
-         * Make sure that a global lock actually exists. If not, just treat
-         * the lock as a standard mutex.
+         * Make sure that a global lock actually exists. If not, just treat the
+         * lock as a standard mutex.
          */
         if (!acpi_gbl_global_lock_present) {
                 acpi_gbl_global_lock_acquired = TRUE;
@@ -572,8 +571,8 @@ void acpi_ev_terminate(void)
 
         if (acpi_gbl_events_initialized) {
                 /*
-                 * Disable all event-related functionality.
-                 * In all cases, on error, print a message but obviously we don't abort.
+                 * Disable all event-related functionality. In all cases, on error,
+                 * print a message but obviously we don't abort.
                  */
 
                 /* Disable all fixed events */
diff --git a/drivers/acpi/events/evregion.c b/drivers/acpi/events/evregion.c
index 236fbd1ca438..3ddddbfa8db7 100644
--- a/drivers/acpi/events/evregion.c
+++ b/drivers/acpi/events/evregion.c
@@ -48,16 +48,8 @@
 
 #define _COMPONENT          ACPI_EVENTS
 ACPI_MODULE_NAME("evregion")
-#define ACPI_NUM_DEFAULT_SPACES     4
-static u8 acpi_gbl_default_address_spaces[ACPI_NUM_DEFAULT_SPACES] = {
-        ACPI_ADR_SPACE_SYSTEM_MEMORY,
-        ACPI_ADR_SPACE_SYSTEM_IO,
-        ACPI_ADR_SPACE_PCI_CONFIG,
-        ACPI_ADR_SPACE_DATA_TABLE
-};
 
 /* Local prototypes */
-
 static acpi_status
 acpi_ev_reg_run(acpi_handle obj_handle,
                 u32 level, void *context, void **return_value);
@@ -66,6 +58,17 @@ static acpi_status
 acpi_ev_install_handler(acpi_handle obj_handle,
                         u32 level, void *context, void **return_value);
 
+/* These are the address spaces that will get default handlers */
+
+#define ACPI_NUM_DEFAULT_SPACES     4
+
+static u8 acpi_gbl_default_address_spaces[ACPI_NUM_DEFAULT_SPACES] = {
+        ACPI_ADR_SPACE_SYSTEM_MEMORY,
+        ACPI_ADR_SPACE_SYSTEM_IO,
+        ACPI_ADR_SPACE_PCI_CONFIG,
+        ACPI_ADR_SPACE_DATA_TABLE
+};
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ev_install_region_handlers
@@ -91,18 +94,19 @@ acpi_status acpi_ev_install_region_handlers(void)
         }
 
         /*
-         * All address spaces (PCI Config, EC, SMBus) are scope dependent
-         * and registration must occur for a specific device.
+         * All address spaces (PCI Config, EC, SMBus) are scope dependent and
+         * registration must occur for a specific device.
          *
-         * In the case of the system memory and IO address spaces there is currently
-         * no device associated with the address space.  For these we use the root.
+         * In the case of the system memory and IO address spaces there is
+         * currently no device associated with the address space. For these we
+         * use the root.
          *
-         * We install the default PCI config space handler at the root so
-         * that this space is immediately available even though the we have
-         * not enumerated all the PCI Root Buses yet.  This is to conform
-         * to the ACPI specification which states that the PCI config
-         * space must be always available -- even though we are nowhere
-         * near ready to find the PCI root buses at this point.
+         * We install the default PCI config space handler at the root so that
+         * this space is immediately available even though the we have not
+         * enumerated all the PCI Root Buses yet. This is to conform to the ACPI
+         * specification which states that the PCI config space must be always
+         * available -- even though we are nowhere near ready to find the PCI root
+         * buses at this point.
          *
          * NOTE: We ignore AE_ALREADY_EXISTS because this means that a handler
          * has already been installed (via acpi_install_address_space_handler).
@@ -160,12 +164,11 @@ acpi_status acpi_ev_initialize_op_regions(void)
                 return_ACPI_STATUS(status);
         }
 
-        /*
-         * Run the _REG methods for op_regions in each default address space
-         */
-        for (i = 0; i < ACPI_NUM_DEFAULT_SPACES; i++) {
+        /* Run the _REG methods for op_regions in each default address space */
 
-                /* TBD: Make sure handler is the DEFAULT handler, otherwise
+        for (i = 0; i < ACPI_NUM_DEFAULT_SPACES; i++) {
+                /*
+                 * TBD: Make sure handler is the DEFAULT handler, otherwise
                  * _REG will have already been run.
                  */
                 status = acpi_ev_execute_reg_methods(acpi_gbl_root_node,
@@ -318,13 +321,13 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
         }
 
         /*
-         * It may be the case that the region has never been initialized
+         * It may be the case that the region has never been initialized.
          * Some types of regions require special init code
          */
         if (!(region_obj->region.flags & AOPOBJ_SETUP_COMPLETE)) {
-                /*
-                 * This region has not been initialized yet, do it
-                 */
+
+                /* This region has not been initialized yet, do it */
+
                 region_setup = handler_desc->address_space.setup;
                 if (!region_setup) {
 
@@ -339,9 +342,9 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
                 }
 
                 /*
-                 * We must exit the interpreter because the region
-                 * setup will potentially execute control methods
-                 * (e.g., _REG method for this region)
+                 * We must exit the interpreter because the region setup will
+                 * potentially execute control methods (for example, the _REG method
+                 * for this region)
                  */
                 acpi_ex_exit_interpreter();
 
@@ -364,9 +367,8 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
                         return_ACPI_STATUS(status);
                 }
 
-                /*
-                 * Region initialization may have been completed by region_setup
-                 */
+                /* Region initialization may have been completed by region_setup */
+
                 if (!(region_obj->region.flags & AOPOBJ_SETUP_COMPLETE)) {
                         region_obj->region.flags |= AOPOBJ_SETUP_COMPLETE;
 
@@ -521,8 +523,8 @@ acpi_ev_detach_region(union acpi_operand_object *region_obj,
                         }
 
                         /*
-                         * If the region has been activated, call the setup handler
-                         * with the deactivate notification
+                         * If the region has been activated, call the setup handler with
+                         * the deactivate notification
                          */
                         if (region_obj->region.flags & AOPOBJ_SETUP_COMPLETE) {
                                 region_setup = handler_obj->address_space.setup;
@@ -668,8 +670,8 @@ acpi_ev_install_handler(acpi_handle obj_handle,
         }
 
         /*
-         * We only care about regions.and objects
-         * that are allowed to have address space handlers
+         * We only care about regions and objects that are allowed to have
+         * address space handlers
          */
         if ((node->type != ACPI_TYPE_DEVICE) &&
             (node->type != ACPI_TYPE_REGION) && (node != acpi_gbl_root_node)) {
@@ -710,9 +712,9 @@ acpi_ev_install_handler(acpi_handle obj_handle,
                                 /*
                                  * Since the object we found it on was a device, then it
                                  * means that someone has already installed a handler for
-                                 * the branch of the namespace from this device on.  Just
+                                 * the branch of the namespace from this device on. Just
                                  * bail out telling the walk routine to not traverse this
-                                 * branch.  This preserves the scoping rule for handlers.
+                                 * branch. This preserves the scoping rule for handlers.
                                  */
                                 return (AE_CTRL_DEPTH);
                         }
@@ -723,9 +725,8 @@ acpi_ev_install_handler(acpi_handle obj_handle,
                 }
 
                 /*
-                 * As long as the device didn't have a handler for this
-                 * space we don't care about it.  We just ignore it and
-                 * proceed.
+                 * As long as the device didn't have a handler for this space we
+                 * don't care about it. We just ignore it and proceed.
                  */
                 return (AE_OK);
         }
@@ -733,16 +734,14 @@ acpi_ev_install_handler(acpi_handle obj_handle,
         /* Object is a Region */
 
         if (obj_desc->region.space_id != handler_obj->address_space.space_id) {
-                /*
-                 * This region is for a different address space
-                 * -- just ignore it
-                 */
+
+                /* This region is for a different address space, just ignore it */
+
                 return (AE_OK);
         }
 
         /*
-         * Now we have a region and it is for the handler's address
-         * space type.
+         * Now we have a region and it is for the handler's address space type.
          *
          * First disconnect region for any previous handler (if any)
          */
@@ -786,9 +785,8 @@ acpi_ev_install_space_handler(struct acpi_namespace_node * node,
         ACPI_FUNCTION_TRACE(ev_install_space_handler);
 
         /*
-         * This registration is valid for only the types below
-         * and the root.  This is where the default handlers
-         * get placed.
+         * This registration is valid for only the types below and the root. This
+         * is where the default handlers get placed.
          */
         if ((node->type != ACPI_TYPE_DEVICE) &&
             (node->type != ACPI_TYPE_PROCESSOR) &&
@@ -848,8 +846,8 @@ acpi_ev_install_space_handler(struct acpi_namespace_node * node,
         obj_desc = acpi_ns_get_attached_object(node);
         if (obj_desc) {
                 /*
-                 * The attached device object already exists.
-                 * Make sure the handler is not already installed.
+                 * The attached device object already exists. Make sure the handler
+                 * is not already installed.
                  */
                 handler_obj = obj_desc->device.handler;
 
@@ -864,8 +862,8 @@ acpi_ev_install_space_handler(struct acpi_namespace_node * node,
                                     handler) {
                                         /*
                                          * It is (relatively) OK to attempt to install the SAME
-                                         * handler twice. This can easily happen
-                                         * with PCI_Config space.
+                                         * handler twice. This can easily happen with the
+                                         * PCI_Config space.
                                          */
                                         status = AE_SAME_HANDLER;
                                         goto unlock_and_exit;
@@ -925,9 +923,8 @@ acpi_ev_install_space_handler(struct acpi_namespace_node * node,
         /*
          * Install the handler
          *
-         * At this point there is no existing handler.
-         * Just allocate the object for the handler and link it
-         * into the list.
+         * At this point there is no existing handler. Just allocate the object
+         * for the handler and link it into the list.
          */
         handler_obj =
             acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_ADDRESS_HANDLER);
@@ -1000,11 +997,10 @@ acpi_ev_execute_reg_methods(struct acpi_namespace_node *node,
         ACPI_FUNCTION_TRACE(ev_execute_reg_methods);
 
         /*
-         * Run all _REG methods for all Operation Regions for this
-         * space ID.  This is a separate walk in order to handle any
-         * interdependencies between regions and _REG methods.  (i.e. handlers
-         * must be installed for all regions of this Space ID before we
-         * can run any _REG methods)
+         * Run all _REG methods for all Operation Regions for this space ID. This
+         * is a separate walk in order to handle any interdependencies between
+         * regions and _REG methods. (i.e. handlers must be installed for all
+         * regions of this Space ID before we can run any _REG methods)
          */
         status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, node, ACPI_UINT32_MAX,
                                         ACPI_NS_WALK_UNLOCK, acpi_ev_reg_run,
@@ -1042,8 +1038,8 @@ acpi_ev_reg_run(acpi_handle obj_handle,
         }
 
         /*
-         * We only care about regions.and objects
-         * that are allowed to have address space handlers
+         * We only care about regions.and objects that are allowed to have address
+         * space handlers
          */
         if ((node->type != ACPI_TYPE_REGION) && (node != acpi_gbl_root_node)) {
                 return (AE_OK);
@@ -1062,10 +1058,9 @@ acpi_ev_reg_run(acpi_handle obj_handle,
         /* Object is a Region */
 
         if (obj_desc->region.space_id != space_id) {
-                /*
-                 * This region is for a different address space
-                 * -- just ignore it
-                 */
+
+                /* This region is for a different address space, just ignore it */
+
                 return (AE_OK);
         }
 
diff --git a/drivers/acpi/events/evrgnini.c b/drivers/acpi/events/evrgnini.c
index 6b94b38df07d..f9e561ee9a71 100644
--- a/drivers/acpi/events/evrgnini.c
+++ b/drivers/acpi/events/evrgnini.c
@@ -233,9 +233,9 @@ acpi_ev_pci_config_region_setup(acpi_handle handle,
                                 if (ACPI_FAILURE(status)) {
                                         if (status == AE_SAME_HANDLER) {
                                                 /*
-                                                 * It is OK if the handler is already installed on the root
-                                                 * bridge.  Still need to return a context object for the
-                                                 * new PCI_Config operation region, however.
+                                                 * It is OK if the handler is already installed on the
+                                                 * root bridge. Still need to return a context object
+                                                 * for the new PCI_Config operation region, however.
                                                  */
                                                 status = AE_OK;
                                         } else {
@@ -272,8 +272,8 @@ acpi_ev_pci_config_region_setup(acpi_handle handle,
         }
 
         /*
-         * For PCI_Config space access, we need the segment, bus,
-         * device and function numbers.  Acquire them here.
+         * For PCI_Config space access, we need the segment, bus, device and
+         * function numbers. Acquire them here.
          *
          * Find the parent device object. (This allows the operation region to be
          * within a subscope under the device, such as a control method.)
@@ -289,16 +289,16 @@ acpi_ev_pci_config_region_setup(acpi_handle handle,
         }
 
         /*
-         * Get the PCI device and function numbers from the _ADR object
-         * contained in the parent's scope.
+         * Get the PCI device and function numbers from the _ADR object contained
+         * in the parent's scope.
          */
         status =
             acpi_ut_evaluate_numeric_object(METHOD_NAME__ADR, pci_device_node,
                                             &pci_value);
 
         /*
-         * The default is zero, and since the allocation above zeroed
-         * the data, just do nothing on failure.
+         * The default is zero, and since the allocation above zeroed the data,
+         * just do nothing on failure.
          */
         if (ACPI_SUCCESS(status)) {
                 pci_id->device = ACPI_HIWORD(ACPI_LODWORD(pci_value));
@@ -382,9 +382,8 @@ static u8 acpi_ev_is_pci_root_bridge(struct acpi_namespace_node *node)
         struct acpi_compatible_id_list *cid;
         u32 i;
 
-        /*
-         * Get the _HID and check for a PCI Root Bridge
-         */
+        /* Get the _HID and check for a PCI Root Bridge */
+
         status = acpi_ut_execute_HID(node, &hid);
         if (ACPI_FAILURE(status)) {
                 return (FALSE);
@@ -394,10 +393,8 @@ static u8 acpi_ev_is_pci_root_bridge(struct acpi_namespace_node *node)
                 return (TRUE);
         }
 
-        /*
-         * The _HID did not match.
-         * Get the _CID and check for a PCI Root Bridge
-         */
+        /* The _HID did not match. Get the _CID and check for a PCI Root Bridge */
+
         status = acpi_ut_execute_CID(node, &cid);
         if (ACPI_FAILURE(status)) {
                 return (FALSE);
@@ -516,9 +513,9 @@ acpi_ev_default_region_setup(acpi_handle handle,
  *              Get the appropriate address space handler for a newly
  *              created region.
  *
- *              This also performs address space specific initialization.  For
+ *              This also performs address space specific initialization. For
  *              example, PCI regions must have an _ADR object that contains
- *              a PCI address in the scope of the definition.  This address is
+ *              a PCI address in the scope of the definition. This address is
  *              required to perform an access to PCI config space.
  *
  * MUTEX:       Interpreter should be unlocked, because we may run the _REG
@@ -572,7 +569,7 @@ acpi_ev_initialize_region(union acpi_operand_object *region_obj,
         if (ACPI_SUCCESS(status)) {
                 /*
                  * The _REG method is optional and there can be only one per region
-                 * definition.  This will be executed when the handler is attached
+                 * definition. This will be executed when the handler is attached
                  * or removed
                  */
                 region_obj2->extra.method_REG = method_node;
@@ -670,10 +667,8 @@ acpi_ev_initialize_region(union acpi_operand_object *region_obj,
                         }
                 }
 
-                /*
-                 * This node does not have the handler we need;
-                 * Pop up one level
-                 */
+                /* This node does not have the handler we need; Pop up one level */
+
                 node = acpi_ns_get_parent_node(node);
         }
 
diff --git a/drivers/acpi/events/evsci.c b/drivers/acpi/events/evsci.c
index 2a8b77877610..b5fc8055a473 100644
--- a/drivers/acpi/events/evsci.c
+++ b/drivers/acpi/events/evsci.c
@@ -115,10 +115,8 @@ u32 ACPI_SYSTEM_XFACE acpi_ev_gpe_xrupt_handler(void *context)
          * if this interrupt handler is installed, ACPI is enabled.
          */
 
-        /*
-         * GPEs:
-         * Check for and dispatch any GPEs that have occurred
-         */
+        /* GPEs: Check for and dispatch any GPEs that have occurred */
+
         interrupt_handled |= acpi_ev_gpe_detect(gpe_xrupt_list);
 
         return_UINT32(interrupt_handled);
@@ -158,11 +156,11 @@ u32 acpi_ev_install_sci_handler(void)
  * RETURN:      E_OK if handler uninstalled OK, E_ERROR if handler was not
  *              installed to begin with
  *
- * DESCRIPTION: Remove the SCI interrupt handler.  No further SCIs will be
+ * DESCRIPTION: Remove the SCI interrupt handler. No further SCIs will be
  *              taken.
  *
  * Note:  It doesn't seem important to disable all events or set the event
- *        enable registers to their original values.  The OS should disable
+ *        enable registers to their original values. The OS should disable
  *        the SCI interrupt level when the handler is removed, so no more
  *        events will come in.
  *
diff --git a/drivers/acpi/events/evxface.c b/drivers/acpi/events/evxface.c
index 94a6efe020be..a2867875c74e 100644
--- a/drivers/acpi/events/evxface.c
+++ b/drivers/acpi/events/evxface.c
@@ -267,7 +267,7 @@ acpi_install_notify_handler(acpi_handle device,
         /*
          * Root Object:
          * Registering a notify handler on the root object indicates that the
-         * caller wishes to receive notifications for all objects.  Note that
+         * caller wishes to receive notifications for all objects. Note that
          * only one <external> global handler can be regsitered (per notify type).
          */
         if (device == ACPI_ROOT_OBJECT) {
diff --git a/drivers/acpi/events/evxfevnt.c b/drivers/acpi/events/evxfevnt.c
index 41554f736b68..669b8ca4984b 100644
--- a/drivers/acpi/events/evxfevnt.c
+++ b/drivers/acpi/events/evxfevnt.c
@@ -161,8 +161,8 @@ acpi_status acpi_enable_event(u32 event, u32 flags)
         }
 
         /*
-         * Enable the requested fixed event (by writing a one to the
-         * enable register bit)
+         * Enable the requested fixed event (by writing a one to the enable
+         * register bit)
          */
         status =
             acpi_set_register(acpi_gbl_fixed_event_info[event].
@@ -343,8 +343,8 @@ acpi_status acpi_disable_event(u32 event, u32 flags)
         }
 
         /*
-         * Disable the requested fixed event (by writing a zero to the
-         * enable register bit)
+         * Disable the requested fixed event (by writing a zero to the enable
+         * register bit)
          */
         status =
             acpi_set_register(acpi_gbl_fixed_event_info[event].
@@ -396,8 +396,8 @@ acpi_status acpi_clear_event(u32 event)
         }
 
         /*
-         * Clear the requested fixed event (By writing a one to the
-         * status register bit)
+         * Clear the requested fixed event (By writing a one to the status
+         * register bit)
          */
         status =
             acpi_set_register(acpi_gbl_fixed_event_info[event].