ACPICA 20050408 from Bob Moore

Fixed three cases in the interpreter where an "index"
argument to an ASL function was still (internally) 32
bits instead of the required 64 bits.  This was the Index
argument to the Index, Mid, and Match operators.

The "strupr" function is now permanently local
(acpi_ut_strupr), since this is not a POSIX-defined
function and not present in most kernel-level C
libraries. References to the C library strupr function
have been removed from the headers.

Completed the deployment of static
functions/prototypes. All prototypes with the static
attribute have been moved from the headers to the owning
C file.

ACPICA 20050329 from Bob Moore

An error is now generated if an attempt is made to create
a Buffer Field of length zero (A CreateField with a length
operand of zero.)

The interpreter now issues a warning whenever executable
code at the module level is detected during ACPI table
load. This will give some idea of the prevalence of this
type of code.

Implemented support for references to named objects (other
than control methods) within package objects.

Enhanced package object output for the debug
object. Package objects are now completely dumped, showing
all elements.

Enhanced miscellaneous object output for the debug
object. Any object can now be written to the debug object
(for example, a device object can be written, and the type
of the object will be displayed.)

The "static" qualifier has been added to all local
functions across the core subsystem.

The number of "long" lines (> 80 chars) within the source
has been significantly reduced, by about 1/3.

Cleaned up all header files to ensure that all CA/iASL
functions are prototyped (even static functions) and the
formatting is consistent.

Two new header files have been added, acopcode.h and
acnames.h.

Removed several obsolete functions that were no longer
used.

Signed-off-by: Len Brown <len.brown@intel.com>

5 files changed, 156 insertions, 113 deletions

diff --git a/drivers/acpi/hardware/hwacpi.c b/drivers/acpi/hardware/hwacpi.c
index 529e922bdc85..b51001e74eea 100644
--- a/drivers/acpi/hardware/hwacpi.c
+++ b/drivers/acpi/hardware/hwacpi.c
@@ -58,7 +58,8 @@
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Initialize and validate various ACPI registers
+ * DESCRIPTION: Initialize and validate the various ACPI registers defined in
+ *              the FADT.
  *
  ******************************************************************************/
 
@@ -75,7 +76,7 @@ acpi_hw_initialize (
         /* We must have the ACPI tables by the time we get here */
 
         if (!acpi_gbl_FADT) {
-                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "A FADT is not loaded\n"));
+                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "No FADT is present\n"));
 
                 return_ACPI_STATUS (AE_NO_ACPI_TABLES);
         }
@@ -131,7 +132,8 @@ acpi_hw_set_mode (
          * transitions are not supported.
          */
         if (!acpi_gbl_FADT->acpi_enable && !acpi_gbl_FADT->acpi_disable) {
-                ACPI_REPORT_ERROR (("No ACPI mode transition supported in this system (enable/disable both zero)\n"));
+                ACPI_REPORT_ERROR ((
+                        "No ACPI mode transition supported in this system (enable/disable both zero)\n"));
                 return_ACPI_STATUS (AE_OK);
         }
 
@@ -162,7 +164,8 @@ acpi_hw_set_mode (
         }
 
         if (ACPI_FAILURE (status)) {
-                ACPI_REPORT_ERROR (("Could not write mode change, %s\n", acpi_format_exception (status)));
+                ACPI_REPORT_ERROR (("Could not write mode change, %s\n",
+                        acpi_format_exception (status)));
                 return_ACPI_STATUS (status);
         }
 
@@ -173,7 +176,8 @@ acpi_hw_set_mode (
         retry = 3000;
         while (retry) {
                 if (acpi_hw_get_mode() == mode) {
-                        ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Mode %X successfully enabled\n", mode));
+                        ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Mode %X successfully enabled\n",
+                                mode));
                         return_ACPI_STATUS (AE_OK);
                 }
                 acpi_os_stall(1000);
@@ -185,7 +189,7 @@ acpi_hw_set_mode (
 }
 
 
-/******************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_hw_get_mode
  *
@@ -199,7 +203,8 @@ acpi_hw_set_mode (
  ******************************************************************************/
 
 u32
-acpi_hw_get_mode (void)
+acpi_hw_get_mode (
+        void)
 {
         acpi_status                     status;
         u32                             value;
diff --git a/drivers/acpi/hardware/hwgpe.c b/drivers/acpi/hardware/hwgpe.c
index 9ac1d639bf51..8daeabb2fc7a 100644
--- a/drivers/acpi/hardware/hwgpe.c
+++ b/drivers/acpi/hardware/hwgpe.c
@@ -48,6 +48,13 @@
 #define _COMPONENT          ACPI_HARDWARE
          ACPI_MODULE_NAME    ("hwgpe")
 
+/* Local prototypes */
+
+static acpi_status
+acpi_hw_enable_wakeup_gpe_block (
+        struct acpi_gpe_xrupt_info      *gpe_xrupt_info,
+        struct acpi_gpe_block_info      *gpe_block);
+
 
 /******************************************************************************
  *
@@ -135,6 +142,7 @@ acpi_hw_clear_gpe (
  * DESCRIPTION: Return the status of a single GPE.
  *
  ******************************************************************************/
+
 #ifdef ACPI_FUTURE_USAGE
 acpi_status
 acpi_hw_get_gpe_status (
@@ -206,7 +214,7 @@ unlock_and_exit:
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Disable all GPEs within a GPE block
+ * DESCRIPTION: Disable all GPEs within a single GPE block
  *
  ******************************************************************************/
 
@@ -244,7 +252,7 @@ acpi_hw_disable_gpe_block (
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Clear status bits for all GPEs within a GPE block
+ * DESCRIPTION: Clear status bits for all GPEs within a single GPE block
  *
  ******************************************************************************/
 
@@ -282,8 +290,8 @@ acpi_hw_clear_gpe_block (
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Enable all "runtime" GPEs within a GPE block. (Includes
- *              combination wake/run GPEs.)
+ * DESCRIPTION: Enable all "runtime" GPEs within a single GPE block. Includes
+ *              combination wake/run GPEs.
  *
  ******************************************************************************/
 
@@ -327,12 +335,12 @@ acpi_hw_enable_runtime_gpe_block (
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Enable all "wake" GPEs within a GPE block.  (Includes
- *              combination wake/run GPEs.)
+ * DESCRIPTION: Enable all "wake" GPEs within a single GPE block. Includes
+ *              combination wake/run GPEs.
  *
  ******************************************************************************/
 
-acpi_status
+static acpi_status
 acpi_hw_enable_wakeup_gpe_block (
         struct acpi_gpe_xrupt_info      *gpe_xrupt_info,
         struct acpi_gpe_block_info      *gpe_block)
@@ -350,7 +358,8 @@ acpi_hw_enable_wakeup_gpe_block (
 
                 /* Enable all "wake" GPEs in this register */
 
-                status = acpi_hw_low_level_write (8, gpe_block->register_info[i].enable_for_wake,
+                status = acpi_hw_low_level_write (8,
+                                 gpe_block->register_info[i].enable_for_wake,
                                  &gpe_block->register_info[i].enable_address);
                 if (ACPI_FAILURE (status)) {
                         return (status);
@@ -369,7 +378,7 @@ acpi_hw_enable_wakeup_gpe_block (
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Disable and clear all GPEs
+ * DESCRIPTION: Disable and clear all GPEs in all GPE blocks
  *
  ******************************************************************************/
 
@@ -397,7 +406,7 @@ acpi_hw_disable_all_gpes (
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Enable all GPEs of the given type
+ * DESCRIPTION: Enable all "runtime" GPEs, in all GPE blocks
  *
  ******************************************************************************/
 
@@ -424,7 +433,7 @@ acpi_hw_enable_all_runtime_gpes (
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Enable all GPEs of the given type
+ * DESCRIPTION: Enable all "wakeup" GPEs, in all GPE blocks
  *
  ******************************************************************************/
 
diff --git a/drivers/acpi/hardware/hwregs.c b/drivers/acpi/hardware/hwregs.c
index 91af0c2ddcf7..6d9e4eb84836 100644
--- a/drivers/acpi/hardware/hwregs.c
+++ b/drivers/acpi/hardware/hwregs.c
@@ -87,8 +87,9 @@ acpi_hw_clear_acpi_status (
                 }
         }
 
-        status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_STATUS,
-                          ACPI_BITMASK_ALL_FIXED_STATUS);
+        status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK,
+                         ACPI_REGISTER_PM1_STATUS,
+                         ACPI_BITMASK_ALL_FIXED_STATUS);
         if (ACPI_FAILURE (status)) {
                 goto unlock_and_exit;
         }
@@ -138,28 +139,30 @@ acpi_get_sleep_type_data (
 {
         acpi_status                     status = AE_OK;
         struct acpi_parameter_info      info;
+        char                            *sleep_state_name;
 
 
         ACPI_FUNCTION_TRACE ("acpi_get_sleep_type_data");
 
 
-        /*
-         * Validate parameters
-         */
+        /* Validate parameters */
+
         if ((sleep_state > ACPI_S_STATES_MAX) ||
                 !sleep_type_a || !sleep_type_b) {
                 return_ACPI_STATUS (AE_BAD_PARAMETER);
         }
 
-        /*
-         * Evaluate the namespace object containing the values for this state
-         */
+        /* Evaluate the namespace object containing the values for this state */
+
         info.parameters = NULL;
-        status = acpi_ns_evaluate_by_name ((char *) acpi_gbl_sleep_state_names[sleep_state],
-                          &info);
+        info.return_object = NULL;
+        sleep_state_name = (char *) acpi_gbl_sleep_state_names[sleep_state];
+
+        status = acpi_ns_evaluate_by_name (sleep_state_name, &info);
         if (ACPI_FAILURE (status)) {
-                ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "%s while evaluating sleep_state [%s]\n",
-                        acpi_format_exception (status), acpi_gbl_sleep_state_names[sleep_state]));
+                ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
+                        "%s while evaluating sleep_state [%s]\n",
+                        acpi_format_exception (status), sleep_state_name));
 
                 return_ACPI_STATUS (status);
         }
@@ -167,45 +170,57 @@ acpi_get_sleep_type_data (
         /* Must have a return object */
 
         if (!info.return_object) {
-                ACPI_REPORT_ERROR (("Missing Sleep State object\n"));
+                ACPI_REPORT_ERROR (("No Sleep State object returned from [%s]\n",
+                        sleep_state_name));
                 status = AE_NOT_EXIST;
         }
 
         /* It must be of type Package */
 
         else if (ACPI_GET_OBJECT_TYPE (info.return_object) != ACPI_TYPE_PACKAGE) {
-                ACPI_REPORT_ERROR (("Sleep State object not a Package\n"));
+                ACPI_REPORT_ERROR (("Sleep State return object is not a Package\n"));
                 status = AE_AML_OPERAND_TYPE;
         }
 
-        /* The package must have at least two elements */
-
+        /*
+         * The package must have at least two elements.  NOTE (March 2005): This
+         * goes against the current ACPI spec which defines this object as a
+         * package with one encoded DWORD element.  However, existing practice
+         * by BIOS vendors seems to be to have 2 or more elements, at least
+         * one per sleep type (A/B).
+         */
         else if (info.return_object->package.count < 2) {
-                ACPI_REPORT_ERROR (("Sleep State package does not have at least two elements\n"));
+                ACPI_REPORT_ERROR ((
+                        "Sleep State return package does not have at least two elements\n"));
                 status = AE_AML_NO_OPERAND;
         }
 
         /* The first two elements must both be of type Integer */
 
-        else if ((ACPI_GET_OBJECT_TYPE (info.return_object->package.elements[0]) != ACPI_TYPE_INTEGER) ||
-                         (ACPI_GET_OBJECT_TYPE (info.return_object->package.elements[1]) != ACPI_TYPE_INTEGER)) {
-                ACPI_REPORT_ERROR (("Sleep State package elements are not both Integers (%s, %s)\n",
+        else if ((ACPI_GET_OBJECT_TYPE (info.return_object->package.elements[0])
+                         != ACPI_TYPE_INTEGER) ||
+                         (ACPI_GET_OBJECT_TYPE (info.return_object->package.elements[1])
+                                != ACPI_TYPE_INTEGER)) {
+                ACPI_REPORT_ERROR ((
+                        "Sleep State return package elements are not both Integers (%s, %s)\n",
                         acpi_ut_get_object_type_name (info.return_object->package.elements[0]),
                         acpi_ut_get_object_type_name (info.return_object->package.elements[1])));
                 status = AE_AML_OPERAND_TYPE;
         }
         else {
-                /*
-                 * Valid _Sx_ package size, type, and value
-                 */
-                *sleep_type_a = (u8) (info.return_object->package.elements[0])->integer.value;
-                *sleep_type_b = (u8) (info.return_object->package.elements[1])->integer.value;
+                /* Valid _Sx_ package size, type, and value */
+
+                *sleep_type_a = (u8)
+                        (info.return_object->package.elements[0])->integer.value;
+                *sleep_type_b = (u8)
+                        (info.return_object->package.elements[1])->integer.value;
         }
 
         if (ACPI_FAILURE (status)) {
                 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
-                        "While evaluating sleep_state [%s], bad Sleep object %p type %s\n",
-                        acpi_gbl_sleep_state_names[sleep_state], info.return_object,
+                        "%s While evaluating sleep_state [%s], bad Sleep object %p type %s\n",
+                        acpi_format_exception (status),
+                        sleep_state_name, info.return_object,
                         acpi_ut_get_object_type_name (info.return_object)));
         }
 
@@ -221,9 +236,9 @@ EXPORT_SYMBOL(acpi_get_sleep_type_data);
  *
  * PARAMETERS:  register_id         - Index of ACPI Register to access
  *
- * RETURN:      The bit mask to be used when accessing the register
+ * RETURN:      The bitmask to be used when accessing the register
  *
- * DESCRIPTION: Map register_id into a register bit mask.
+ * DESCRIPTION: Map register_id into a register bitmask.
  *
  ******************************************************************************/
 
@@ -359,7 +374,7 @@ acpi_set_register (
         /* Always do a register read first so we can insert the new bits  */
 
         status = acpi_hw_register_read (ACPI_MTX_DO_NOT_LOCK,
-                          bit_reg_info->parent_register, &register_value);
+                         bit_reg_info->parent_register, &register_value);
         if (ACPI_FAILURE (status)) {
                 goto unlock_and_exit;
         }
@@ -396,7 +411,7 @@ acpi_set_register (
                                 bit_reg_info->access_bit_mask, value);
 
                 status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK,
-                                  ACPI_REGISTER_PM1_ENABLE, (u16) register_value);
+                                 ACPI_REGISTER_PM1_ENABLE, (u16) register_value);
                 break;
 
 
@@ -413,7 +428,7 @@ acpi_set_register (
                                 bit_reg_info->access_bit_mask, value);
 
                 status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK,
-                                  ACPI_REGISTER_PM1_CONTROL, (u16) register_value);
+                                 ACPI_REGISTER_PM1_CONTROL, (u16) register_value);
                 break;
 
 
@@ -427,17 +442,19 @@ acpi_set_register (
 
                 ACPI_DEBUG_PRINT ((ACPI_DB_IO, "PM2 control: Read %X from %8.8X%8.8X\n",
                         register_value,
-                        ACPI_FORMAT_UINT64 (acpi_gbl_FADT->xpm2_cnt_blk.address)));
+                        ACPI_FORMAT_UINT64 (
+                                acpi_gbl_FADT->xpm2_cnt_blk.address)));
 
                 ACPI_REGISTER_INSERT_VALUE (register_value, bit_reg_info->bit_position,
                                 bit_reg_info->access_bit_mask, value);
 
                 ACPI_DEBUG_PRINT ((ACPI_DB_IO, "About to write %4.4X to %8.8X%8.8X\n",
                         register_value,
-                        ACPI_FORMAT_UINT64 (acpi_gbl_FADT->xpm2_cnt_blk.address)));
+                        ACPI_FORMAT_UINT64 (
+                                acpi_gbl_FADT->xpm2_cnt_blk.address)));
 
                 status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK,
-                                   ACPI_REGISTER_PM2_CONTROL, (u8) (register_value));
+                                 ACPI_REGISTER_PM2_CONTROL, (u8) (register_value));
                 break;
 
 
@@ -454,7 +471,9 @@ unlock_and_exit:
 
         /* Normalize the value that was read */
 
-        ACPI_DEBUG_EXEC (register_value = ((register_value & bit_reg_info->access_bit_mask) >> bit_reg_info->bit_position));
+        ACPI_DEBUG_EXEC (register_value =
+                ((register_value & bit_reg_info->access_bit_mask) >>
+                        bit_reg_info->bit_position));
 
         ACPI_DEBUG_PRINT ((ACPI_DB_IO, "Set bits: %8.8X actual %8.8X register %X\n",
                         value, register_value, bit_reg_info->parent_register));
@@ -469,7 +488,7 @@ EXPORT_SYMBOL(acpi_set_register);
  *
  * PARAMETERS:  use_lock            - Mutex hw access
  *              register_id         - register_iD + Offset
- *              return_value        - Value that was read from the register
+ *              return_value        - Where the register value is returned
  *
  * RETURN:      Status and the value read.
  *
@@ -557,7 +576,8 @@ acpi_hw_register_read (
                 break;
 
         default:
-                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown Register ID: %X\n", register_id));
+                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown Register ID: %X\n",
+                        register_id));
                 status = AE_BAD_PARAMETER;
                 break;
         }
@@ -763,10 +783,11 @@ acpi_hw_low_level_read (
                 return (AE_BAD_PARAMETER);
         }
 
-        ACPI_DEBUG_PRINT ((ACPI_DB_IO, "Read:  %8.8X width %2d from %8.8X%8.8X (%s)\n",
-                        *value, width,
-                        ACPI_FORMAT_UINT64 (address),
-                        acpi_ut_get_region_name (reg->address_space_id)));
+        ACPI_DEBUG_PRINT ((ACPI_DB_IO,
+                "Read:  %8.8X width %2d from %8.8X%8.8X (%s)\n",
+                *value, width,
+                ACPI_FORMAT_UINT64 (address),
+                acpi_ut_get_region_name (reg->address_space_id)));
 
         return (status);
 }
@@ -841,10 +862,11 @@ acpi_hw_low_level_write (
                 return (AE_BAD_PARAMETER);
         }
 
-        ACPI_DEBUG_PRINT ((ACPI_DB_IO, "Wrote: %8.8X width %2d   to %8.8X%8.8X (%s)\n",
-                        value, width,
-                        ACPI_FORMAT_UINT64 (address),
-                        acpi_ut_get_region_name (reg->address_space_id)));
+        ACPI_DEBUG_PRINT ((ACPI_DB_IO,
+                "Wrote: %8.8X width %2d   to %8.8X%8.8X (%s)\n",
+                value, width,
+                ACPI_FORMAT_UINT64 (address),
+                acpi_ut_get_region_name (reg->address_space_id)));
 
         return (status);
 }
diff --git a/drivers/acpi/hardware/hwsleep.c b/drivers/acpi/hardware/hwsleep.c
index 77b3e9a8550b..415d342aeab5 100644
--- a/drivers/acpi/hardware/hwsleep.c
+++ b/drivers/acpi/hardware/hwsleep.c
@@ -43,27 +43,13 @@
  */
 
 #include <linux/module.h>
-
 #include <acpi/acpi.h>
 
 #define _COMPONENT          ACPI_HARDWARE
          ACPI_MODULE_NAME    ("hwsleep")
 
 
-#define METHOD_NAME__BFS        "\\_BFS"
-#define METHOD_NAME__GTS        "\\_GTS"
-#define METHOD_NAME__PTS        "\\_PTS"
-#define METHOD_NAME__SST        "\\_SI._SST"
-#define METHOD_NAME__WAK        "\\_WAK"
-
-#define ACPI_SST_INDICATOR_OFF  0
-#define ACPI_SST_WORKING        1
-#define ACPI_SST_WAKING         2
-#define ACPI_SST_SLEEPING       3
-#define ACPI_SST_SLEEP_CONTEXT  4
-
-
-/******************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_set_firmware_waking_vector
  *
@@ -72,7 +58,7 @@
  *
  * RETURN:      Status
  *
- * DESCRIPTION: access function for d_firmware_waking_vector field in FACS
+ * DESCRIPTION: Access function for the firmware_waking_vector field in FACS
  *
  ******************************************************************************/
 
@@ -99,19 +85,20 @@ acpi_set_firmware_waking_vector (
 }
 
 
-/******************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_get_firmware_waking_vector
  *
- * PARAMETERS:  *physical_address   - Output buffer where contents of
+ * PARAMETERS:  *physical_address   - Where the contents of
  *                                    the firmware_waking_vector field of
- *                                    the FACS will be stored.
+ *                                    the FACS will be returned.
  *
- * RETURN:      Status
+ * RETURN:      Status, vector
  *
- * DESCRIPTION: Access function for firmware_waking_vector field in FACS
+ * DESCRIPTION: Access function for the firmware_waking_vector field in FACS
  *
  ******************************************************************************/
+
 #ifdef ACPI_FUTURE_USAGE
 acpi_status
 acpi_get_firmware_waking_vector (
@@ -141,7 +128,7 @@ acpi_get_firmware_waking_vector (
 #endif
 
 
-/******************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_enter_sleep_state_prep
  *
@@ -215,7 +202,7 @@ acpi_enter_sleep_state_prep (
                 break;
 
         default:
-                arg.integer.value = ACPI_SST_INDICATOR_OFF; /* Default is indicator off */
+                arg.integer.value = ACPI_SST_INDICATOR_OFF; /* Default is off */
                 break;
         }
 
@@ -223,14 +210,15 @@ acpi_enter_sleep_state_prep (
 
         status = acpi_evaluate_object (NULL, METHOD_NAME__SST, &arg_list, NULL);
         if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) {
-                 ACPI_REPORT_ERROR (("Method _SST failed, %s\n", acpi_format_exception (status)));
+                 ACPI_REPORT_ERROR (("Method _SST failed, %s\n",
+                        acpi_format_exception (status)));
         }
 
         return_ACPI_STATUS (AE_OK);
 }
 
 
-/******************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_enter_sleep_state
  *
@@ -299,15 +287,18 @@ acpi_enter_sleep_state (
 
         /* Get current value of PM1A control */
 
-        status = acpi_hw_register_read (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_CONTROL, &PM1Acontrol);
+        status = acpi_hw_register_read (ACPI_MTX_DO_NOT_LOCK,
+                         ACPI_REGISTER_PM1_CONTROL, &PM1Acontrol);
         if (ACPI_FAILURE (status)) {
                 return_ACPI_STATUS (status);
         }
-        ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "Entering sleep state [S%d]\n", sleep_state));
+        ACPI_DEBUG_PRINT ((ACPI_DB_INIT,
+                "Entering sleep state [S%d]\n", sleep_state));
 
         /* Clear SLP_EN and SLP_TYP fields */
 
-        PM1Acontrol &= ~(sleep_type_reg_info->access_bit_mask | sleep_enable_reg_info->access_bit_mask);
+        PM1Acontrol &= ~(sleep_type_reg_info->access_bit_mask |
+                           sleep_enable_reg_info->access_bit_mask);
         PM1Bcontrol = PM1Acontrol;
 
         /* Insert SLP_TYP bits */
@@ -322,12 +313,14 @@ acpi_enter_sleep_state (
 
         /* Write #1: fill in SLP_TYP data */
 
-        status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1A_CONTROL, PM1Acontrol);
+        status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK,
+                         ACPI_REGISTER_PM1A_CONTROL, PM1Acontrol);
         if (ACPI_FAILURE (status)) {
                 return_ACPI_STATUS (status);
         }
 
-        status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1B_CONTROL, PM1Bcontrol);
+        status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK,
+                         ACPI_REGISTER_PM1B_CONTROL, PM1Bcontrol);
         if (ACPI_FAILURE (status)) {
                 return_ACPI_STATUS (status);
         }
@@ -341,22 +334,25 @@ acpi_enter_sleep_state (
 
         ACPI_FLUSH_CPU_CACHE ();
 
-        status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1A_CONTROL, PM1Acontrol);
+        status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK,
+                         ACPI_REGISTER_PM1A_CONTROL, PM1Acontrol);
         if (ACPI_FAILURE (status)) {
                 return_ACPI_STATUS (status);
         }
 
-        status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1B_CONTROL, PM1Bcontrol);
+        status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK,
+                         ACPI_REGISTER_PM1B_CONTROL, PM1Bcontrol);
         if (ACPI_FAILURE (status)) {
                 return_ACPI_STATUS (status);
         }
 
         if (sleep_state > ACPI_STATE_S3) {
                 /*
-                 * We wanted to sleep > S3, but it didn't happen (by virtue of the fact that
-                 * we are still executing!)
+                 * We wanted to sleep > S3, but it didn't happen (by virtue of the
+                 * fact that we are still executing!)
                  *
-                 * Wait ten seconds, then try again. This is to get S4/S5 to work on all machines.
+                 * Wait ten seconds, then try again. This is to get S4/S5 to work on
+                 * all machines.
                  *
                  * We wait so long to allow chipsets that poll this reg very slowly to
                  * still read the right value. Ideally, this block would go
@@ -364,7 +360,8 @@ acpi_enter_sleep_state (
                  */
                 acpi_os_stall (10000000);
 
-                status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_CONTROL,
+                status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK,
+                                 ACPI_REGISTER_PM1_CONTROL,
                                  sleep_enable_reg_info->access_bit_mask);
                 if (ACPI_FAILURE (status)) {
                         return_ACPI_STATUS (status);
@@ -374,7 +371,8 @@ acpi_enter_sleep_state (
         /* Wait until we enter sleep state */
 
         do {
-                status = acpi_get_register (ACPI_BITREG_WAKE_STATUS, &in_value, ACPI_MTX_DO_NOT_LOCK);
+                status = acpi_get_register (ACPI_BITREG_WAKE_STATUS, &in_value,
+                        ACPI_MTX_DO_NOT_LOCK);
                 if (ACPI_FAILURE (status)) {
                         return_ACPI_STATUS (status);
                 }
@@ -388,7 +386,7 @@ acpi_enter_sleep_state (
 EXPORT_SYMBOL(acpi_enter_sleep_state);
 
 
-/******************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_enter_sleep_state_s4bios
  *
@@ -439,11 +437,13 @@ acpi_enter_sleep_state_s4bios (
 
         ACPI_FLUSH_CPU_CACHE ();
 
-        status = acpi_os_write_port (acpi_gbl_FADT->smi_cmd, (u32) acpi_gbl_FADT->S4bios_req, 8);
+        status = acpi_os_write_port (acpi_gbl_FADT->smi_cmd,
+                         (u32) acpi_gbl_FADT->S4bios_req, 8);
 
         do {
                 acpi_os_stall(1000);
-                status = acpi_get_register (ACPI_BITREG_WAKE_STATUS, &in_value, ACPI_MTX_DO_NOT_LOCK);
+                status = acpi_get_register (ACPI_BITREG_WAKE_STATUS, &in_value,
+                        ACPI_MTX_DO_NOT_LOCK);
                 if (ACPI_FAILURE (status)) {
                         return_ACPI_STATUS (status);
                 }
@@ -454,7 +454,7 @@ acpi_enter_sleep_state_s4bios (
 EXPORT_SYMBOL(acpi_enter_sleep_state_s4bios);
 
 
-/******************************************************************************
+/*******************************************************************************
  *
  * FUNCTION:    acpi_leave_sleep_state
  *
@@ -534,18 +534,21 @@ acpi_leave_sleep_state (
         arg.integer.value = ACPI_SST_WAKING;
         status = acpi_evaluate_object (NULL, METHOD_NAME__SST, &arg_list, NULL);
         if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) {
-                ACPI_REPORT_ERROR (("Method _SST failed, %s\n", acpi_format_exception (status)));
+                ACPI_REPORT_ERROR (("Method _SST failed, %s\n",
+                        acpi_format_exception (status)));
         }
 
         arg.integer.value = sleep_state;
         status = acpi_evaluate_object (NULL, METHOD_NAME__BFS, &arg_list, NULL);
         if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) {
-                ACPI_REPORT_ERROR (("Method _BFS failed, %s\n", acpi_format_exception (status)));
+                ACPI_REPORT_ERROR (("Method _BFS failed, %s\n",
+                        acpi_format_exception (status)));
         }
 
         status = acpi_evaluate_object (NULL, METHOD_NAME__WAK, &arg_list, NULL);
         if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) {
-                ACPI_REPORT_ERROR (("Method _WAK failed, %s\n", acpi_format_exception (status)));
+                ACPI_REPORT_ERROR (("Method _WAK failed, %s\n",
+                        acpi_format_exception (status)));
         }
         /* TBD: _WAK "sometimes" returns stuff - do we want to look at it? */
 
@@ -567,15 +570,19 @@ acpi_leave_sleep_state (
 
         /* Enable power button */
 
-        (void) acpi_set_register(acpi_gbl_fixed_event_info[ACPI_EVENT_POWER_BUTTON].enable_register_id,
+        (void) acpi_set_register(
+                        acpi_gbl_fixed_event_info[ACPI_EVENT_POWER_BUTTON].enable_register_id,
                         1, ACPI_MTX_DO_NOT_LOCK);
-        (void) acpi_set_register(acpi_gbl_fixed_event_info[ACPI_EVENT_POWER_BUTTON].status_register_id,
+
+        (void) acpi_set_register(
+                        acpi_gbl_fixed_event_info[ACPI_EVENT_POWER_BUTTON].status_register_id,
                         1, ACPI_MTX_DO_NOT_LOCK);
 
         arg.integer.value = ACPI_SST_WORKING;
         status = acpi_evaluate_object (NULL, METHOD_NAME__SST, &arg_list, NULL);
         if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) {
-                ACPI_REPORT_ERROR (("Method _SST failed, %s\n", acpi_format_exception (status)));
+                ACPI_REPORT_ERROR (("Method _SST failed, %s\n",
+                        acpi_format_exception (status)));
         }
 
         return_ACPI_STATUS (status);
diff --git a/drivers/acpi/hardware/hwtimer.c b/drivers/acpi/hardware/hwtimer.c
index 1906167d7294..49d7b395322e 100644
--- a/drivers/acpi/hardware/hwtimer.c
+++ b/drivers/acpi/hardware/hwtimer.c
@@ -43,7 +43,6 @@
  */
 
 #include <linux/module.h>
-
 #include <acpi/acpi.h>
 
 #define _COMPONENT          ACPI_HARDWARE
@@ -90,7 +89,7 @@ acpi_get_timer_resolution (
  *
  * PARAMETERS:  Ticks               - Where the timer value is returned
  *
- * RETURN:      Status and current ticks
+ * RETURN:      Status and current timer value (ticks)
  *
  * DESCRIPTION: Obtains current value of ACPI PM Timer (in ticks).
  *
@@ -199,5 +198,6 @@ acpi_get_timer_duration (
         *time_elapsed = (u32) quotient;
         return_ACPI_STATUS (status);
 }
+
 EXPORT_SYMBOL(acpi_get_timer_duration);