Merge tag 'acpi-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI updates from Rafael Wysocki:
 "These rearrange the ACPI documentation by converting it to the .rst
  format and splitting it into clear categories (admin guide, driver
  API, firmware guide), switch over multiple users of a problematic
  library function to a new better one, update the ACPICA code in the
  kernel to a new upstream release, fix a few issues, improve power
  device management diagnostics and do some cleanups.

  Specifics:

   - Convert the ACPI documentation in the kernel source tree to the
     .rst format and split it into the admin guide, driver API and
     firmware guide parts (Changbin Du).

   - Add a PRP0001 usage example to the ACPI documentation (Thomas
     Preston).

   - Switch over the users of the acpi_dev_get_first_match_name()
     library function which turned out to be problematic to a new,
     better one called acpi_dev_get_first_match_dev() (Andy Shevchenko,
     YueHaibing).

   - Update the ACPICA code in the kernel to upstream release 20190405
     including:
       * Null pointer dereference check in acpi_ns_delete_node() (Erik
         Schmauss).
       * Multiple macro and function name changes (Bob Moore).
       * Predefined operation region name fix (Erik Schmauss).

   - Fix hibernation issue on systems using the Baytrail and Cherrytrail
     Intel SoCs introduced during the 4.20 development cycle (Hans de
     Goede).

   - Add Sony VPCEH3U1E to the backlight quirk list (Zhang Rui).

   - Fix button handling during system resume (Zhang Rui).

   - Add a device PM diagnostic message (Rafael Wysocki).

   - Clean up the code, comments and white space in multiple places
     (Bjorn Helgaas, Gustavo Silva, Kefeng Wang)"

* tag 'acpi-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (53 commits)
  Documentation: ACPI: move video_extension.txt to firmware-guide/acpi and convert to reST
  Documentation: ACPI: move ssdt-overlays.txt to admin-guide/acpi and convert to reST
  Documentation: ACPI: move lpit.txt to firmware-guide/acpi and convert to reST
  Documentation: ACPI: move cppc_sysfs.txt to admin-guide/acpi and convert to reST
  Documentation: ACPI: move apei/einj.txt to firmware-guide/acpi and convert to reST
  Documentation: ACPI: move apei/output_format.txt to firmware-guide/acpi and convert to reST
  Documentation: ACPI: move aml-debugger.txt to firmware-guide/acpi and convert to reST
  Documentation: ACPI: move method-tracing.txt to firmware-guide/acpi and convert to rsST
  Documentation: ACPI: move debug.txt to firmware-guide/acpi and convert to reST
  Documentation: ACPI: move dsd/data-node-references.txt to firmware-guide/acpi and convert to reST
  Documentation: ACPI: move dsd/graph.txt to firmware-guide/acpi and convert to reST
  Documentation: ACPI: move acpi-lid.txt to firmware-guide/acpi and convert to reST
  Documentation: ACPI: move i2c-muxes.txt to firmware-guide/acpi and convert to reST
  Documentation: ACPI: move dsdt-override.txt to admin-guide/acpi and convert to reST
  Documentation: ACPI: move initrd_table_override.txt to admin-guide/acpi and convert to reST
  Documentation: ACPI: move method-customizing.txt to firmware-guide/acpi and convert to reST
  Documentation: ACPI: move gpio-properties.txt to firmware-guide/acpi and convert to reST
  Documentation: ACPI: move DSD-properties-rules.txt to firmware-guide/acpi and covert to reST
  Documentation: ACPI: move scan_handlers.txt to driver-api/acpi and convert to reST
  Documentation: ACPI: move linuxized-acpica.txt to driver-api/acpi and convert to reST
  ...

51 files changed, 209 insertions, 186 deletions

diff --git a/drivers/acpi/acpi_configfs.c b/drivers/acpi/acpi_configfs.c
index 81bfc6197293..f92033661239 100644
--- a/drivers/acpi/acpi_configfs.c
+++ b/drivers/acpi/acpi_configfs.c
@@ -109,7 +109,7 @@ static ssize_t acpi_table_signature_show(struct config_item *cfg, char *str)
         if (!h)
                 return -EINVAL;
 
-        return sprintf(str, "%.*s\n", ACPI_NAME_SIZE, h->signature);
+        return sprintf(str, "%.*s\n", ACPI_NAMESEG_SIZE, h->signature);
 }
 
 static ssize_t acpi_table_length_show(struct config_item *cfg, char *str)
@@ -170,7 +170,7 @@ static ssize_t acpi_table_asl_compiler_id_show(struct config_item *cfg,
         if (!h)
                 return -EINVAL;
 
-        return sprintf(str, "%.*s\n", ACPI_NAME_SIZE, h->asl_compiler_id);
+        return sprintf(str, "%.*s\n", ACPI_NAMESEG_SIZE, h->asl_compiler_id);
 }
 
 static ssize_t acpi_table_asl_compiler_revision_show(struct config_item *cfg,
diff --git a/drivers/acpi/acpi_dbg.c b/drivers/acpi/acpi_dbg.c
index 4a434c23a196..d18246a2a65e 100644
--- a/drivers/acpi/acpi_dbg.c
+++ b/drivers/acpi/acpi_dbg.c
@@ -390,7 +390,7 @@ again:
         return size > 0 ? size : ret;
 }
 
-static int acpi_aml_thread(void *unsed)
+static int acpi_aml_thread(void *unused)
 {
         acpi_osd_exec_callback function = NULL;
         void *context;
diff --git a/drivers/acpi/acpi_lpat.c b/drivers/acpi/acpi_lpat.c
index 2cd9f738812b..43f1b99c86ca 100644
--- a/drivers/acpi/acpi_lpat.c
+++ b/drivers/acpi/acpi_lpat.c
@@ -22,7 +22,7 @@
  * LPAT conversion table
  *
  * @lpat_table: the temperature_raw mapping table structure
- * @raw: the raw value, used as a key to get the temerature from the
+ * @raw: the raw value, used as a key to get the temperature from the
  *       above mapping table
  *
  * A positive converted temperature value will be returned on success,
diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index 1e2a10a06b9d..cf768608437e 100644
--- a/drivers/acpi/acpi_lpss.c
+++ b/drivers/acpi/acpi_lpss.c
@@ -1142,8 +1142,8 @@ static struct dev_pm_domain acpi_lpss_pm_domain = {
                 .thaw_noirq = acpi_subsys_thaw_noirq,
                 .poweroff = acpi_subsys_suspend,
                 .poweroff_late = acpi_lpss_suspend_late,
-                .poweroff_noirq = acpi_subsys_suspend_noirq,
-                .restore_noirq = acpi_subsys_resume_noirq,
+                .poweroff_noirq = acpi_lpss_suspend_noirq,
+                .restore_noirq = acpi_lpss_resume_noirq,
                 .restore_early = acpi_lpss_resume_early,
 #endif
                 .runtime_suspend = acpi_lpss_runtime_suspend,
diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h
index a2dfbf6b004e..13d513b81589 100644
--- a/drivers/acpi/acpica/aclocal.h
+++ b/drivers/acpi/acpica/aclocal.h
@@ -293,7 +293,7 @@ acpi_status (*acpi_internal_method) (struct acpi_walk_state * walk_state);
  * expected_return_btypes - Allowed type(s) for the return value
  */
 struct acpi_name_info {
-        char name[ACPI_NAME_SIZE];
+        char name[ACPI_NAMESEG_SIZE];
         u16 argument_list;
         u8 expected_btypes;
 };
@@ -370,7 +370,7 @@ typedef acpi_status (*acpi_object_converter) (struct acpi_namespace_node *
                                               converted_object);
 
 struct acpi_simple_repair_info {
-        char name[ACPI_NAME_SIZE];
+        char name[ACPI_NAMESEG_SIZE];
         u32 unexpected_btypes;
         u32 package_index;
         acpi_object_converter object_converter;
diff --git a/drivers/acpi/acpica/dbexec.c b/drivers/acpi/acpica/dbexec.c
index bb43305cb215..4027eaab18a4 100644
--- a/drivers/acpi/acpica/dbexec.c
+++ b/drivers/acpi/acpica/dbexec.c
@@ -453,7 +453,7 @@ acpi_db_execute(char *name, char **args, acpi_object_type *types, u32 flags)
 
                         /* Dump a _PLD buffer if present */
 
-                        if (ACPI_COMPARE_NAME
+                        if (ACPI_COMPARE_NAMESEG
                             ((ACPI_CAST_PTR
                               (struct acpi_namespace_node,
                                acpi_gbl_db_method_info.method)->name.ascii),
diff --git a/drivers/acpi/acpica/dbnames.c b/drivers/acpi/acpica/dbnames.c
index 004d34d9369b..63fe30e86807 100644
--- a/drivers/acpi/acpica/dbnames.c
+++ b/drivers/acpi/acpica/dbnames.c
@@ -354,7 +354,7 @@ acpi_status acpi_db_find_name_in_namespace(char *name_arg)
         char acpi_name[5] = "____";
         char *acpi_name_ptr = acpi_name;
 
-        if (strlen(name_arg) > ACPI_NAME_SIZE) {
+        if (strlen(name_arg) > ACPI_NAMESEG_SIZE) {
                 acpi_os_printf("Name must be no longer than 4 characters\n");
                 return (AE_OK);
         }
diff --git a/drivers/acpi/acpica/dsinit.c b/drivers/acpi/acpica/dsinit.c
index a4a24ffe5fae..4ebd23700bbc 100644
--- a/drivers/acpi/acpica/dsinit.c
+++ b/drivers/acpi/acpica/dsinit.c
@@ -200,7 +200,7 @@ acpi_ds_initialize_objects(u32 table_index,
 
         /* DSDT is always the first AML table */
 
-        if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_DSDT)) {
+        if (ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_DSDT)) {
                 ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
                                       "\nInitializing Namespace objects:\n"));
         }
diff --git a/drivers/acpi/acpica/evgpeinit.c b/drivers/acpi/acpica/evgpeinit.c
index c92d2f6ebe01..b04f982e59fa 100644
--- a/drivers/acpi/acpica/evgpeinit.c
+++ b/drivers/acpi/acpica/evgpeinit.c
@@ -292,7 +292,7 @@ acpi_ev_match_gpe_method(acpi_handle obj_handle,
         acpi_status status;
         u32 gpe_number;
         u8 temp_gpe_number;
-        char name[ACPI_NAME_SIZE + 1];
+        char name[ACPI_NAMESEG_SIZE + 1];
         u8 type;
 
         ACPI_FUNCTION_TRACE(ev_match_gpe_method);
@@ -310,7 +310,7 @@ acpi_ev_match_gpe_method(acpi_handle obj_handle,
          * 1) Extract the method name and null terminate it
          */
         ACPI_MOVE_32_TO_32(name, &method_node->name.integer);
-        name[ACPI_NAME_SIZE] = 0;
+        name[ACPI_NAMESEG_SIZE] = 0;
 
         /* 2) Name must begin with an underscore */
 
diff --git a/drivers/acpi/acpica/exnames.c b/drivers/acpi/acpica/exnames.c
index bd68d66e89f0..6b76be5212a4 100644
--- a/drivers/acpi/acpica/exnames.c
+++ b/drivers/acpi/acpica/exnames.c
@@ -53,10 +53,10 @@ static char *acpi_ex_allocate_name_string(u32 prefix_count, u32 num_name_segs)
 
                 /* Special case for root */
 
-                size_needed = 1 + (ACPI_NAME_SIZE * num_name_segs) + 2 + 1;
+                size_needed = 1 + (ACPI_NAMESEG_SIZE * num_name_segs) + 2 + 1;
         } else {
                 size_needed =
-                    prefix_count + (ACPI_NAME_SIZE * num_name_segs) + 2 + 1;
+                    prefix_count + (ACPI_NAMESEG_SIZE * num_name_segs) + 2 + 1;
         }
 
         /*
@@ -141,7 +141,7 @@ static acpi_status acpi_ex_name_segment(u8 ** in_aml_address, char *name_string)
         }
 
         for (index = 0;
-             (index < ACPI_NAME_SIZE)
+             (index < ACPI_NAMESEG_SIZE)
              && (acpi_ut_valid_name_char(*aml_address, 0)); index++) {
                 char_buf[index] = *aml_address++;
         }
diff --git a/drivers/acpi/acpica/nsaccess.c b/drivers/acpi/acpica/nsaccess.c
index 75192b958544..7b855603f81a 100644
--- a/drivers/acpi/acpica/nsaccess.c
+++ b/drivers/acpi/acpica/nsaccess.c
@@ -683,7 +683,7 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
 
                 /* Point to next name segment and make this node current */
 
-                path += ACPI_NAME_SIZE;
+                path += ACPI_NAMESEG_SIZE;
                 current_node = this_node;
         }
 
diff --git a/drivers/acpi/acpica/nsalloc.c b/drivers/acpi/acpica/nsalloc.c
index 5470213b8e64..6eb63db72249 100644
--- a/drivers/acpi/acpica/nsalloc.c
+++ b/drivers/acpi/acpica/nsalloc.c
@@ -74,6 +74,10 @@ void acpi_ns_delete_node(struct acpi_namespace_node *node)
 
         ACPI_FUNCTION_NAME(ns_delete_node);
 
+        if (!node) {
+                return_VOID;
+        }
+
         /* Detach an object if there is one */
 
         acpi_ns_detach_object(node);
diff --git a/drivers/acpi/acpica/nsdump.c b/drivers/acpi/acpica/nsdump.c
index 15070bd0c28a..1b12c172e115 100644
--- a/drivers/acpi/acpica/nsdump.c
+++ b/drivers/acpi/acpica/nsdump.c
@@ -70,7 +70,7 @@ void acpi_ns_print_pathname(u32 num_segments, const char *pathname)
                             acpi_os_printf("?");
                 }
 
-                pathname += ACPI_NAME_SIZE;
+                pathname += ACPI_NAMESEG_SIZE;
                 num_segments--;
                 if (num_segments) {
                         acpi_os_printf(".");
diff --git a/drivers/acpi/acpica/nsinit.c b/drivers/acpi/acpica/nsinit.c
index 19fb8dda870f..53e5d00d3a5e 100644
--- a/drivers/acpi/acpica/nsinit.c
+++ b/drivers/acpi/acpica/nsinit.c
@@ -478,7 +478,7 @@ acpi_ns_find_ini_methods(acpi_handle obj_handle,
 
         /* We are only looking for methods named _INI */
 
-        if (!ACPI_COMPARE_NAME(node->name.ascii, METHOD_NAME__INI)) {
+        if (!ACPI_COMPARE_NAMESEG(node->name.ascii, METHOD_NAME__INI)) {
                 return (AE_OK);
         }
 
@@ -641,7 +641,7 @@ acpi_ns_init_one_device(acpi_handle obj_handle,
          * Note: We know there is an _INI within this subtree, but it may not be
          * under this particular device, it may be lower in the branch.
          */
-        if (!ACPI_COMPARE_NAME(device_node->name.ascii, "_SB_") ||
+        if (!ACPI_COMPARE_NAMESEG(device_node->name.ascii, "_SB_") ||
             device_node->parent != acpi_gbl_root_node) {
                 ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
                                 (ACPI_TYPE_METHOD, device_node,
diff --git a/drivers/acpi/acpica/nsnames.c b/drivers/acpi/acpica/nsnames.c
index 289c15bb8c6a..370bbc867745 100644
--- a/drivers/acpi/acpica/nsnames.c
+++ b/drivers/acpi/acpica/nsnames.c
@@ -108,8 +108,8 @@ acpi_ns_handle_to_name(acpi_handle target_handle, struct acpi_buffer *buffer)
         /* Just copy the ACPI name from the Node and zero terminate it */
 
         node_name = acpi_ut_get_node_name(node);
-        ACPI_MOVE_NAME(buffer->pointer, node_name);
-        ((char *)buffer->pointer)[ACPI_NAME_SIZE] = 0;
+        ACPI_COPY_NAMESEG(buffer->pointer, node_name);
+        ((char *)buffer->pointer)[ACPI_NAMESEG_SIZE] = 0;
 
         ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "%4.4s\n", (char *)buffer->pointer));
         return_ACPI_STATUS(AE_OK);
@@ -198,7 +198,7 @@ acpi_ns_build_normalized_path(struct acpi_namespace_node *node,
                               char *full_path, u32 path_size, u8 no_trailing)
 {
         u32 length = 0, i;
-        char name[ACPI_NAME_SIZE];
+        char name[ACPI_NAMESEG_SIZE];
         u8 do_no_trailing;
         char c, *left, *right;
         struct acpi_namespace_node *next_node;
@@ -446,7 +446,7 @@ static void acpi_ns_normalize_pathname(char *original_path)
 
                 /* Do one nameseg at a time */
 
-                for (i = 0; (i < ACPI_NAME_SIZE) && *input_path; i++) {
+                for (i = 0; (i < ACPI_NAMESEG_SIZE) && *input_path; i++) {
                         if ((i == 0) || (*input_path != '_')) { /* First char is allowed to be underscore */
                                 *new_path = *input_path;
                                 new_path++;
diff --git a/drivers/acpi/acpica/nsparse.c b/drivers/acpi/acpica/nsparse.c
index c0b4f7bedfab..f16cf5e4742c 100644
--- a/drivers/acpi/acpica/nsparse.c
+++ b/drivers/acpi/acpica/nsparse.c
@@ -203,7 +203,7 @@ acpi_ns_one_complete_parse(u32 pass_number,
 
         /* Found OSDT table, enable the namespace override feature */
 
-        if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_OSDT) &&
+        if (ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_OSDT) &&
             pass_number == ACPI_IMODE_LOAD_PASS1) {
                 walk_state->namespace_override = TRUE;
         }
diff --git a/drivers/acpi/acpica/nsrepair.c b/drivers/acpi/acpica/nsrepair.c
index 0aacfa48e20d..be86fea8e4d4 100644
--- a/drivers/acpi/acpica/nsrepair.c
+++ b/drivers/acpi/acpica/nsrepair.c
@@ -316,7 +316,7 @@ static const struct acpi_simple_repair_info *acpi_ns_match_simple_repair(struct
 
         this_name = acpi_object_repair_info;
         while (this_name->object_converter) {
-                if (ACPI_COMPARE_NAME(node->name.ascii, this_name->name)) {
+                if (ACPI_COMPARE_NAMESEG(node->name.ascii, this_name->name)) {
 
                         /* Check if we can actually repair this name/type combination */
 
diff --git a/drivers/acpi/acpica/nsrepair2.c b/drivers/acpi/acpica/nsrepair2.c
index d5804a6d1d65..8d776256b213 100644
--- a/drivers/acpi/acpica/nsrepair2.c
+++ b/drivers/acpi/acpica/nsrepair2.c
@@ -25,7 +25,7 @@ acpi_status (*acpi_repair_function) (struct acpi_evaluate_info * info,
                                      return_object_ptr);
 
 typedef struct acpi_repair_info {
-        char name[ACPI_NAME_SIZE];
+        char name[ACPI_NAMESEG_SIZE];
         acpi_repair_function repair_function;
 
 } acpi_repair_info;
@@ -188,7 +188,7 @@ static const struct acpi_repair_info *acpi_ns_match_complex_repair(struct
 
         this_name = acpi_ns_repairable_names;
         while (this_name->repair_function) {
-                if (ACPI_COMPARE_NAME(node->name.ascii, this_name->name)) {
+                if (ACPI_COMPARE_NAMESEG(node->name.ascii, this_name->name)) {
                         return (this_name);
                 }
 
diff --git a/drivers/acpi/acpica/nsutils.c b/drivers/acpi/acpica/nsutils.c
index e5cef1edf49f..6bc90d46db5c 100644
--- a/drivers/acpi/acpica/nsutils.c
+++ b/drivers/acpi/acpica/nsutils.c
@@ -178,7 +178,7 @@ void acpi_ns_get_internal_name_length(struct acpi_namestring_info *info)
                 }
         }
 
-        info->length = (ACPI_NAME_SIZE * info->num_segments) +
+        info->length = (ACPI_NAMESEG_SIZE * info->num_segments) +
             4 + info->num_carats;
 
         info->next_external_char = next_external_char;
@@ -249,7 +249,7 @@ acpi_status acpi_ns_build_internal_name(struct acpi_namestring_info *info)
         /* Build the name (minus path separators) */
 
         for (; num_segments; num_segments--) {
-                for (i = 0; i < ACPI_NAME_SIZE; i++) {
+                for (i = 0; i < ACPI_NAMESEG_SIZE; i++) {
                         if (ACPI_IS_PATH_SEPARATOR(*external_name) ||
                             (*external_name == 0)) {
 
@@ -274,7 +274,7 @@ acpi_status acpi_ns_build_internal_name(struct acpi_namestring_info *info)
                 /* Move on the next segment */
 
                 external_name++;
-                result += ACPI_NAME_SIZE;
+                result += ACPI_NAMESEG_SIZE;
         }
 
         /* Terminate the string */
@@ -489,12 +489,12 @@ acpi_ns_externalize_name(u32 internal_name_length,
 
                         /* Copy and validate the 4-char name segment */
 
-                        ACPI_MOVE_NAME(&(*converted_name)[j],
-                                       &internal_name[names_index]);
+                        ACPI_COPY_NAMESEG(&(*converted_name)[j],
+                                          &internal_name[names_index]);
                         acpi_ut_repair_name(&(*converted_name)[j]);
 
-                        j += ACPI_NAME_SIZE;
-                        names_index += ACPI_NAME_SIZE;
+                        j += ACPI_NAMESEG_SIZE;
+                        names_index += ACPI_NAMESEG_SIZE;
                 }
         }
 
diff --git a/drivers/acpi/acpica/nsxfname.c b/drivers/acpi/acpica/nsxfname.c
index de2d3135d6a9..55b4a5b3331f 100644
--- a/drivers/acpi/acpica/nsxfname.c
+++ b/drivers/acpi/acpica/nsxfname.c
@@ -495,8 +495,8 @@ acpi_status acpi_install_method(u8 *buffer)
 
         /* Table must be a DSDT or SSDT */
 
-        if (!ACPI_COMPARE_NAME(table->signature, ACPI_SIG_DSDT) &&
-            !ACPI_COMPARE_NAME(table->signature, ACPI_SIG_SSDT)) {
+        if (!ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_DSDT) &&
+            !ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_SSDT)) {
                 return (AE_BAD_HEADER);
         }
 
diff --git a/drivers/acpi/acpica/psargs.c b/drivers/acpi/acpica/psargs.c
index 9d9d442cd999..e62c7897fdf1 100644
--- a/drivers/acpi/acpica/psargs.c
+++ b/drivers/acpi/acpica/psargs.c
@@ -150,21 +150,21 @@ char *acpi_ps_get_next_namestring(struct acpi_parse_state *parser_state)
 
                 /* Two name segments */
 
-                end += 1 + (2 * ACPI_NAME_SIZE);
+                end += 1 + (2 * ACPI_NAMESEG_SIZE);
                 break;
 
         case AML_MULTI_NAME_PREFIX:
 
                 /* Multiple name segments, 4 chars each, count in next byte */
 
-                end += 2 + (*(end + 1) * ACPI_NAME_SIZE);
+                end += 2 + (*(end + 1) * ACPI_NAMESEG_SIZE);
                 break;
 
         default:
 
                 /* Single name segment */
 
-                end += ACPI_NAME_SIZE;
+                end += ACPI_NAMESEG_SIZE;
                 break;
         }
 
@@ -522,7 +522,7 @@ static union acpi_parse_object *acpi_ps_get_next_field(struct acpi_parse_state
 
                 ACPI_MOVE_32_TO_32(&name, parser_state->aml);
                 acpi_ps_set_name(field, name);
-                parser_state->aml += ACPI_NAME_SIZE;
+                parser_state->aml += ACPI_NAMESEG_SIZE;
 
                 ASL_CV_CAPTURE_COMMENTS_ONLY(parser_state);
 
diff --git a/drivers/acpi/acpica/rsxface.c b/drivers/acpi/acpica/rsxface.c
index 1d6f136e4068..c62be3d91712 100644
--- a/drivers/acpi/acpica/rsxface.c
+++ b/drivers/acpi/acpica/rsxface.c
@@ -603,10 +603,10 @@ acpi_walk_resources(acpi_handle device_handle,
         /* Parameter validation */
 
         if (!device_handle || !user_function || !name ||
-            (!ACPI_COMPARE_NAME(name, METHOD_NAME__CRS) &&
-             !ACPI_COMPARE_NAME(name, METHOD_NAME__PRS) &&
-             !ACPI_COMPARE_NAME(name, METHOD_NAME__AEI) &&
-             !ACPI_COMPARE_NAME(name, METHOD_NAME__DMA))) {
+            (!ACPI_COMPARE_NAMESEG(name, METHOD_NAME__CRS) &&
+             !ACPI_COMPARE_NAMESEG(name, METHOD_NAME__PRS) &&
+             !ACPI_COMPARE_NAMESEG(name, METHOD_NAME__AEI) &&
+             !ACPI_COMPARE_NAMESEG(name, METHOD_NAME__DMA))) {
                 return_ACPI_STATUS(AE_BAD_PARAMETER);
         }
 
diff --git a/drivers/acpi/acpica/tbdata.c b/drivers/acpi/acpica/tbdata.c
index 0cecd0039acf..933f81316ad2 100644
--- a/drivers/acpi/acpica/tbdata.c
+++ b/drivers/acpi/acpica/tbdata.c
@@ -480,7 +480,8 @@ acpi_tb_verify_temp_table(struct acpi_table_desc *table_desc,
 
         /* If a particular signature is expected (DSDT/FACS), it must match */
 
-        if (signature && !ACPI_COMPARE_NAME(&table_desc->signature, signature)) {
+        if (signature &&
+            !ACPI_COMPARE_NAMESEG(&table_desc->signature, signature)) {
                 ACPI_BIOS_ERROR((AE_INFO,
                                  "Invalid signature 0x%X for ACPI table, expected [%s]",
                                  table_desc->signature.integer, signature));
diff --git a/drivers/acpi/acpica/tbfind.c b/drivers/acpi/acpica/tbfind.c
index 951bd8e1c50a..b2abb40023a6 100644
--- a/drivers/acpi/acpica/tbfind.c
+++ b/drivers/acpi/acpica/tbfind.c
@@ -56,7 +56,7 @@ acpi_tb_find_table(char *signature,
         /* Normalize the input strings */
 
         memset(&header, 0, sizeof(struct acpi_table_header));
-        ACPI_MOVE_NAME(header.signature, signature);
+        ACPI_COPY_NAMESEG(header.signature, signature);
         strncpy(header.oem_id, oem_id, ACPI_OEM_ID_SIZE);
         strncpy(header.oem_table_id, oem_table_id, ACPI_OEM_TABLE_ID_SIZE);
 
@@ -65,7 +65,7 @@ acpi_tb_find_table(char *signature,
         (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
         for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) {
                 if (memcmp(&(acpi_gbl_root_table_list.tables[i].signature),
-                           header.signature, ACPI_NAME_SIZE)) {
+                           header.signature, ACPI_NAMESEG_SIZE)) {
 
                         /* Not the requested table */
 
@@ -94,14 +94,14 @@ acpi_tb_find_table(char *signature,
 
                 if (!memcmp
                     (acpi_gbl_root_table_list.tables[i].pointer->signature,
-                     header.signature, ACPI_NAME_SIZE) && (!oem_id[0]
-                                                           ||
-                                                           !memcmp
-                                                           (acpi_gbl_root_table_list.
-                                                            tables[i].pointer->
-                                                            oem_id,
-                                                            header.oem_id,
-                                                            ACPI_OEM_ID_SIZE))
+                     header.signature, ACPI_NAMESEG_SIZE) && (!oem_id[0]
+                                                              ||
+                                                              !memcmp
+                                                              (acpi_gbl_root_table_list.
+                                                               tables[i].
+                                                               pointer->oem_id,
+                                                               header.oem_id,
+                                                               ACPI_OEM_ID_SIZE))
                     && (!oem_table_id[0]
                         || !memcmp(acpi_gbl_root_table_list.tables[i].pointer->
                                    oem_table_id, header.oem_table_id,
diff --git a/drivers/acpi/acpica/tbinstal.c b/drivers/acpi/acpica/tbinstal.c
index be6642bf6366..ef1ffd36ab3f 100644
--- a/drivers/acpi/acpica/tbinstal.c
+++ b/drivers/acpi/acpica/tbinstal.c
@@ -120,7 +120,7 @@ acpi_tb_install_standard_table(acpi_physical_address address,
          */
         if (!reload &&
             acpi_gbl_disable_ssdt_table_install &&
-            ACPI_COMPARE_NAME(&new_table_desc.signature, ACPI_SIG_SSDT)) {
+            ACPI_COMPARE_NAMESEG(&new_table_desc.signature, ACPI_SIG_SSDT)) {
                 ACPI_INFO(("Ignoring installation of %4.4s at %8.8X%8.8X",
                            new_table_desc.signature.ascii,
                            ACPI_FORMAT_UINT64(address)));
diff --git a/drivers/acpi/acpica/tbprint.c b/drivers/acpi/acpica/tbprint.c
index 9b5df95d881b..4764f849cb78 100644
--- a/drivers/acpi/acpica/tbprint.c
+++ b/drivers/acpi/acpica/tbprint.c
@@ -69,10 +69,10 @@ acpi_tb_cleanup_table_header(struct acpi_table_header *out_header,
 
         memcpy(out_header, header, sizeof(struct acpi_table_header));
 
-        acpi_tb_fix_string(out_header->signature, ACPI_NAME_SIZE);
+        acpi_tb_fix_string(out_header->signature, ACPI_NAMESEG_SIZE);
         acpi_tb_fix_string(out_header->oem_id, ACPI_OEM_ID_SIZE);
         acpi_tb_fix_string(out_header->oem_table_id, ACPI_OEM_TABLE_ID_SIZE);
-        acpi_tb_fix_string(out_header->asl_compiler_id, ACPI_NAME_SIZE);
+        acpi_tb_fix_string(out_header->asl_compiler_id, ACPI_NAMESEG_SIZE);
 }
 
 /*******************************************************************************
@@ -94,7 +94,7 @@ acpi_tb_print_table_header(acpi_physical_address address,
 {
         struct acpi_table_header local_header;
 
-        if (ACPI_COMPARE_NAME(header->signature, ACPI_SIG_FACS)) {
+        if (ACPI_COMPARE_NAMESEG(header->signature, ACPI_SIG_FACS)) {
 
                 /* FACS only has signature and length fields */
 
@@ -158,8 +158,8 @@ acpi_status acpi_tb_verify_checksum(struct acpi_table_header *table, u32 length)
          * They are the odd tables, have no standard ACPI header and no checksum
          */
 
-        if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_S3PT) ||
-            ACPI_COMPARE_NAME(table->signature, ACPI_SIG_FACS)) {
+        if (ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_S3PT) ||
+            ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_FACS)) {
                 return (AE_OK);
         }
 
diff --git a/drivers/acpi/acpica/tbutils.c b/drivers/acpi/acpica/tbutils.c
index 2469e01310e2..c5f0b8ec70cc 100644
--- a/drivers/acpi/acpica/tbutils.c
+++ b/drivers/acpi/acpica/tbutils.c
@@ -332,9 +332,9 @@ acpi_tb_parse_root_table(acpi_physical_address rsdp_address)
                                                         &table_index);
 
                 if (ACPI_SUCCESS(status) &&
-                    ACPI_COMPARE_NAME(&acpi_gbl_root_table_list.
-                                      tables[table_index].signature,
-                                      ACPI_SIG_FADT)) {
+                    ACPI_COMPARE_NAMESEG(&acpi_gbl_root_table_list.
+                                         tables[table_index].signature,
+                                         ACPI_SIG_FADT)) {
                         acpi_gbl_fadt_index = table_index;
                         acpi_tb_parse_fadt();
                 }
diff --git a/drivers/acpi/acpica/tbxface.c b/drivers/acpi/acpica/tbxface.c
index 36592888f0e7..1640685bf4ae 100644
--- a/drivers/acpi/acpica/tbxface.c
+++ b/drivers/acpi/acpica/tbxface.c
@@ -230,7 +230,7 @@ acpi_get_table_header(char *signature,
 
         for (i = 0, j = 0; i < acpi_gbl_root_table_list.current_table_count;
              i++) {
-                if (!ACPI_COMPARE_NAME
+                if (!ACPI_COMPARE_NAMESEG
                     (&(acpi_gbl_root_table_list.tables[i].signature),
                      signature)) {
                         continue;
@@ -323,7 +323,7 @@ acpi_get_table(char *signature,
              i++) {
                 table_desc = &acpi_gbl_root_table_list.tables[i];
 
-                if (!ACPI_COMPARE_NAME(&table_desc->signature, signature)) {
+                if (!ACPI_COMPARE_NAMESEG(&table_desc->signature, signature)) {
                         continue;
                 }
 
diff --git a/drivers/acpi/acpica/tbxfload.c b/drivers/acpi/acpica/tbxfload.c
index 1a2592cc3245..4f30f06a6f78 100644
--- a/drivers/acpi/acpica/tbxfload.c
+++ b/drivers/acpi/acpica/tbxfload.c
@@ -118,7 +118,7 @@ acpi_status acpi_tb_load_namespace(void)
         table = &acpi_gbl_root_table_list.tables[acpi_gbl_dsdt_index];
 
         if (!acpi_gbl_root_table_list.current_table_count ||
-            !ACPI_COMPARE_NAME(table->signature.ascii, ACPI_SIG_DSDT) ||
+            !ACPI_COMPARE_NAMESEG(table->signature.ascii, ACPI_SIG_DSDT) ||
             ACPI_FAILURE(acpi_tb_validate_table(table))) {
                 status = AE_NO_ACPI_TABLES;
                 goto unlock_and_exit;
@@ -170,11 +170,12 @@ acpi_status acpi_tb_load_namespace(void)
                 table = &acpi_gbl_root_table_list.tables[i];
 
                 if (!table->address ||
-                    (!ACPI_COMPARE_NAME(table->signature.ascii, ACPI_SIG_SSDT)
-                     && !ACPI_COMPARE_NAME(table->signature.ascii,
-                                           ACPI_SIG_PSDT)
-                     && !ACPI_COMPARE_NAME(table->signature.ascii,
-                                           ACPI_SIG_OSDT))
+                    (!ACPI_COMPARE_NAMESEG
+                     (table->signature.ascii, ACPI_SIG_SSDT)
+                     && !ACPI_COMPARE_NAMESEG(table->signature.ascii,
+                                              ACPI_SIG_PSDT)
+                     && !ACPI_COMPARE_NAMESEG(table->signature.ascii,
+                                              ACPI_SIG_OSDT))
                     || ACPI_FAILURE(acpi_tb_validate_table(table))) {
                         continue;
                 }
@@ -364,7 +365,7 @@ acpi_status acpi_unload_parent_table(acpi_handle object)
                  * only these types can contain AML and thus are the only types
                  * that can create namespace objects.
                  */
-                if (ACPI_COMPARE_NAME
+                if (ACPI_COMPARE_NAMESEG
                     (acpi_gbl_root_table_list.tables[i].signature.ascii,
                      ACPI_SIG_DSDT)) {
                         status = AE_TYPE;
diff --git a/drivers/acpi/acpica/utascii.c b/drivers/acpi/acpica/utascii.c
index 79d7426fd7bf..f6cd7d4f698b 100644
--- a/drivers/acpi/acpica/utascii.c
+++ b/drivers/acpi/acpica/utascii.c
@@ -30,7 +30,7 @@ u8 acpi_ut_valid_nameseg(char *name)
 
         /* Validate each character in the signature */
 
-        for (i = 0; i < ACPI_NAME_SIZE; i++) {
+        for (i = 0; i < ACPI_NAMESEG_SIZE; i++) {
                 if (!acpi_ut_valid_name_char(name[i], i)) {
                         return (FALSE);
                 }
diff --git a/drivers/acpi/acpica/utdecode.c b/drivers/acpi/acpica/utdecode.c
index ad9f77eb554f..65beaa237669 100644
--- a/drivers/acpi/acpica/utdecode.c
+++ b/drivers/acpi/acpica/utdecode.c
@@ -78,7 +78,7 @@ const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS] = {
         "IPMI",                 /* 0x07 */
         "GeneralPurposeIo",     /* 0x08 */
         "GenericSerialBus",     /* 0x09 */
-        "PCC"                   /* 0x0A */
+        "PlatformCommChannel"   /* 0x0A */
 };
 
 const char *acpi_ut_get_region_name(u8 space_id)
@@ -239,7 +239,7 @@ const char *acpi_ut_get_node_name(void *object)
 {
         struct acpi_namespace_node *node = (struct acpi_namespace_node *)object;
 
-        /* Must return a string of exactly 4 characters == ACPI_NAME_SIZE */
+        /* Must return a string of exactly 4 characters == ACPI_NAMESEG_SIZE */
 
         if (!object) {
                 return ("NULL");
diff --git a/drivers/acpi/acpica/utmisc.c b/drivers/acpi/acpica/utmisc.c
index afaadc73196b..8638efacdbf4 100644
--- a/drivers/acpi/acpica/utmisc.c
+++ b/drivers/acpi/acpica/utmisc.c
@@ -59,10 +59,10 @@ u8 acpi_ut_is_aml_table(struct acpi_table_header *table)
 
         /* These are the only tables that contain executable AML */
 
-        if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_DSDT) ||
-            ACPI_COMPARE_NAME(table->signature, ACPI_SIG_PSDT) ||
-            ACPI_COMPARE_NAME(table->signature, ACPI_SIG_SSDT) ||
-            ACPI_COMPARE_NAME(table->signature, ACPI_SIG_OSDT) ||
+        if (ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_DSDT) ||
+            ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_PSDT) ||
+            ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_SSDT) ||
+            ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_OSDT) ||
             ACPI_IS_OEM_SIG(table->signature)) {
                 return (TRUE);
         }
diff --git a/drivers/acpi/acpica/utpredef.c b/drivers/acpi/acpica/utpredef.c
index a9f08f43c685..1b0f68f5ed8c 100644
--- a/drivers/acpi/acpica/utpredef.c
+++ b/drivers/acpi/acpica/utpredef.c
@@ -84,7 +84,7 @@ const union acpi_predefined_info *acpi_ut_match_predefined_method(char *name)
 
         this_name = acpi_gbl_predefined_methods;
         while (this_name->info.name[0]) {
-                if (ACPI_COMPARE_NAME(name, this_name->info.name)) {
+                if (ACPI_COMPARE_NAMESEG(name, this_name->info.name)) {
                         return (this_name);
                 }
 
@@ -201,7 +201,7 @@ const union acpi_predefined_info *acpi_ut_match_resource_name(char *name)
 
         this_name = acpi_gbl_resource_names;
         while (this_name->info.name[0]) {
-                if (ACPI_COMPARE_NAME(name, this_name->info.name)) {
+                if (ACPI_COMPARE_NAMESEG(name, this_name->info.name)) {
                         return (this_name);
                 }
 
diff --git a/drivers/acpi/acpica/utstring.c b/drivers/acpi/acpica/utstring.c
index 5bef0b059406..c39b5483045d 100644
--- a/drivers/acpi/acpica/utstring.c
+++ b/drivers/acpi/acpica/utstring.c
@@ -141,15 +141,15 @@ void acpi_ut_repair_name(char *name)
          * Special case for the root node. This can happen if we get an
          * error during the execution of module-level code.
          */
-        if (ACPI_COMPARE_NAME(name, ACPI_ROOT_PATHNAME)) {
+        if (ACPI_COMPARE_NAMESEG(name, ACPI_ROOT_PATHNAME)) {
                 return;
         }
 
-        ACPI_MOVE_NAME(&original_name, name);
+        ACPI_COPY_NAMESEG(&original_name, name);
 
         /* Check each character in the name */
 
-        for (i = 0; i < ACPI_NAME_SIZE; i++) {
+        for (i = 0; i < ACPI_NAMESEG_SIZE; i++) {
                 if (acpi_ut_valid_name_char(name[i], i)) {
                         continue;
                 }
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index a19ff3977ac4..623998a8d722 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -456,8 +456,11 @@ static int acpi_button_resume(struct device *dev)
         struct acpi_button *button = acpi_driver_data(device);
 
         button->suspended = false;
-        if (button->type == ACPI_BUTTON_TYPE_LID && button->input->users)
+        if (button->type == ACPI_BUTTON_TYPE_LID && button->input->users) {
+                button->last_state = !!acpi_lid_evaluate_state(device);
+                button->last_time = ktime_get();
                 acpi_lid_initialize_state(device);
+        }
         return 0;
 }
 #endif
diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
index d4244e7d0e38..653642a4cbdd 100644
--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -81,9 +81,9 @@ struct cppc_pcc_data {
         int refcount;
 };
 
-/* Array  to represent the PCC channel per subspace id */
+/* Array to represent the PCC channel per subspace ID */
 static struct cppc_pcc_data *pcc_data[MAX_PCC_SUBSPACES];
-/* The cpu_pcc_subspace_idx containsper CPU subspace id */
+/* The cpu_pcc_subspace_idx contains per CPU subspace ID */
 static DEFINE_PER_CPU(int, cpu_pcc_subspace_idx);
 
 /*
@@ -436,7 +436,7 @@ int acpi_get_psd_map(struct cppc_cpudata **all_cpu_data)
                 return -ENOMEM;
 
         /*
-         * Now that we have _PSD data from all CPUs, lets setup P-state
+         * Now that we have _PSD data from all CPUs, let's setup P-state
          * domain info.
          */
         for_each_possible_cpu(i) {
@@ -588,7 +588,7 @@ static int register_pcc_channel(int pcc_ss_idx)
                         return -ENOMEM;
                 }
 
-                /* Set flag so that we dont come here for each CPU. */
+                /* Set flag so that we don't come here for each CPU. */
                 pcc_data[pcc_ss_idx]->pcc_channel_acquired = true;
         }
 
@@ -613,7 +613,7 @@ bool __weak cpc_ffh_supported(void)
  *
  * Check and allocate the cppc_pcc_data memory.
  * In some processor configurations it is possible that same subspace
- * is shared between multiple CPU's. This is seen especially in CPU's
+ * is shared between multiple CPUs. This is seen especially in CPUs
  * with hardware multi-threading support.
  *
  * Return: 0 for success, errno for failure
@@ -711,7 +711,7 @@ static bool is_cppc_supported(int revision, int num_ent)
 
 /**
  * acpi_cppc_processor_probe - Search for per CPU _CPC objects.
- * @pr: Ptr to acpi_processor containing this CPUs logical Id.
+ * @pr: Ptr to acpi_processor containing this CPU's logical ID.
  *
  *      Return: 0 for success or negative value for err.
  */
@@ -728,7 +728,7 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
         acpi_status status;
         int ret = -EFAULT;
 
-        /* Parse the ACPI _CPC table for this cpu. */
+        /* Parse the ACPI _CPC table for this CPU. */
         status = acpi_evaluate_object_typed(handle, "_CPC", NULL, &output,
                         ACPI_TYPE_PACKAGE);
         if (ACPI_FAILURE(status)) {
@@ -840,7 +840,7 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
         if (ret)
                 goto out_free;
 
-        /* Register PCC channel once for all PCC subspace id. */
+        /* Register PCC channel once for all PCC subspace ID. */
         if (pcc_subspace_id >= 0 && !pcc_data[pcc_subspace_id]->pcc_channel_acquired) {
                 ret = register_pcc_channel(pcc_subspace_id);
                 if (ret)
@@ -860,7 +860,7 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
                 goto out_free;
         }
 
-        /* Plug PSD data into this CPUs CPC descriptor. */
+        /* Plug PSD data into this CPU's CPC descriptor. */
         per_cpu(cpc_desc_ptr, pr->id) = cpc_ptr;
 
         ret = kobject_init_and_add(&cpc_ptr->kobj, &cppc_ktype, &cpu_dev->kobj,
@@ -891,7 +891,7 @@ EXPORT_SYMBOL_GPL(acpi_cppc_processor_probe);
 
 /**
  * acpi_cppc_processor_exit - Cleanup CPC structs.
- * @pr: Ptr to acpi_processor containing this CPUs logical Id.
+ * @pr: Ptr to acpi_processor containing this CPU's logical ID.
  *
  * Return: Void
  */
@@ -931,7 +931,7 @@ EXPORT_SYMBOL_GPL(acpi_cppc_processor_exit);
 
 /**
  * cpc_read_ffh() - Read FFH register
- * @cpunum:     cpu number to read
+ * @cpunum:     CPU number to read
  * @reg:        cppc register information
  * @val:        place holder for return value
  *
@@ -946,7 +946,7 @@ int __weak cpc_read_ffh(int cpunum, struct cpc_reg *reg, u64 *val)
 
 /**
  * cpc_write_ffh() - Write FFH register
- * @cpunum:     cpu number to write
+ * @cpunum:     CPU number to write
  * @reg:        cppc register information
  * @val:        value to write
  *
@@ -1093,7 +1093,7 @@ int cppc_get_desired_perf(int cpunum, u64 *desired_perf)
 EXPORT_SYMBOL_GPL(cppc_get_desired_perf);
 
 /**
- * cppc_get_perf_caps - Get a CPUs performance capabilities.
+ * cppc_get_perf_caps - Get a CPU's performance capabilities.
  * @cpunum: CPU from which to get capabilities info.
  * @perf_caps: ptr to cppc_perf_caps. See cppc_acpi.h
  *
@@ -1183,7 +1183,7 @@ out_err:
 EXPORT_SYMBOL_GPL(cppc_get_perf_caps);
 
 /**
- * cppc_get_perf_ctrs - Read a CPUs performance feedback counters.
+ * cppc_get_perf_ctrs - Read a CPU's performance feedback counters.
  * @cpunum: CPU from which to read counters.
  * @perf_fb_ctrs: ptr to cppc_perf_fb_ctrs. See cppc_acpi.h
  *
@@ -1210,7 +1210,7 @@ int cppc_get_perf_ctrs(int cpunum, struct cppc_perf_fb_ctrs *perf_fb_ctrs)
         ctr_wrap_reg = &cpc_desc->cpc_regs[CTR_WRAP_TIME];
 
         /*
-         * If refernce perf register is not supported then we should
+         * If reference perf register is not supported then we should
          * use the nominal perf value
          */
         if (!CPC_SUPPORTED(ref_perf_reg))
@@ -1263,7 +1263,7 @@ out_err:
 EXPORT_SYMBOL_GPL(cppc_get_perf_ctrs);
 
 /**
- * cppc_set_perf - Set a CPUs performance controls.
+ * cppc_set_perf - Set a CPU's performance controls.
  * @cpu: CPU for which to set performance controls.
  * @perf_ctrls: ptr to cppc_perf_ctrls. See cppc_acpi.h
  *
@@ -1344,7 +1344,7 @@ int cppc_set_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls)
          * executing the Phase-II.
          *     2. Some other CPU has beaten this CPU to successfully execute the
          * write_trylock and has already acquired the write_lock. We know for a
-         * fact it(other CPU acquiring the write_lock) couldn't have happened
+         * fact it (other CPU acquiring the write_lock) couldn't have happened
          * before this CPU's Phase-I as we held the read_lock.
          *     3. Some other CPU executing pcc CMD_READ has stolen the
          * down_write, in which case, send_pcc_cmd will check for pending
diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c
index 824ae985ad93..5b50f884712c 100644
--- a/drivers/acpi/device_pm.c
+++ b/drivers/acpi/device_pm.c
@@ -728,6 +728,9 @@ static int __acpi_device_wakeup_enable(struct acpi_device *adev,
                 goto out;
         }
 
+        acpi_handle_debug(adev->handle, "GPE%2X enabled for wakeup\n",
+                          (unsigned int)wakeup->gpe_number);
+
 inc:
         wakeup->enable_count++;
 
diff --git a/drivers/acpi/dptf/dptf_power.c b/drivers/acpi/dptf/dptf_power.c
index e1c242568341..0c081390930a 100644
--- a/drivers/acpi/dptf/dptf_power.c
+++ b/drivers/acpi/dptf/dptf_power.c
@@ -31,8 +31,7 @@ static ssize_t name##_show(struct device *dev,\
                            struct device_attribute *attr,\
                            char *buf)\
 {\
-        struct platform_device *pdev = to_platform_device(dev);\
-        struct acpi_device *acpi_dev = platform_get_drvdata(pdev);\
+        struct acpi_device *acpi_dev = dev_get_drvdata(dev);\
         unsigned long long val;\
         acpi_status status;\
 \
diff --git a/drivers/acpi/event.c b/drivers/acpi/event.c
index 5a127f3f2d5c..47f21599f2ab 100644
--- a/drivers/acpi/event.c
+++ b/drivers/acpi/event.c
@@ -131,8 +131,8 @@ int acpi_bus_generate_netlink_event(const char *device_class,
         event = nla_data(attr);
         memset(event, 0, sizeof(struct acpi_genl_event));
 
-        strcpy(event->device_class, device_class);
-        strcpy(event->bus_id, bus_id);
+        strscpy(event->device_class, device_class, sizeof(event->device_class));
+        strscpy(event->bus_id, bus_id, sizeof(event->bus_id));
         event->type = type;
         event->data = data;
 
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index 665e93ca0b40..87db3e124725 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -535,12 +535,12 @@ int acpi_device_sleep_wake(struct acpi_device *dev,
         /*
          * Try to execute _DSW first.
          *
-         * Three agruments are needed for the _DSW object:
+         * Three arguments are needed for the _DSW object:
          * Argument 0: enable/disable the wake capabilities
          * Argument 1: target system state
          * Argument 2: target device state
          * When _DSW object is called to disable the wake capabilities, maybe
-         * the first argument is filled. The values of the other two agruments
+         * the first argument is filled. The values of the other two arguments
          * are meaningless.
          */
         in_arg[0].type = ACPI_TYPE_INTEGER;
diff --git a/drivers/acpi/pptt.c b/drivers/acpi/pptt.c
index 065c4fc245d1..b72e6afaa8fb 100644
--- a/drivers/acpi/pptt.c
+++ b/drivers/acpi/pptt.c
@@ -164,7 +164,7 @@ static struct acpi_pptt_cache *acpi_find_cache_level(struct acpi_table_header *t
 }
 
 /**
- * acpi_count_levels() - Given a PPTT table, and a cpu node, count the caches
+ * acpi_count_levels() - Given a PPTT table, and a CPU node, count the caches
  * @table_hdr: Pointer to the head of the PPTT table
  * @cpu_node: processor node we wish to count caches for
  *
@@ -235,7 +235,7 @@ static int acpi_pptt_leaf_node(struct acpi_table_header *table_hdr,
 /**
  * acpi_find_processor_node() - Given a PPTT table find the requested processor
  * @table_hdr:  Pointer to the head of the PPTT table
- * @acpi_cpu_id: cpu we are searching for
+ * @acpi_cpu_id: CPU we are searching for
  *
  * Find the subtable entry describing the provided processor.
  * This is done by iterating the PPTT table looking for processor nodes
@@ -456,21 +456,21 @@ static struct acpi_pptt_processor *acpi_find_processor_package_id(struct acpi_ta
 
 static void acpi_pptt_warn_missing(void)
 {
-        pr_warn_once("No PPTT table found, cpu and cache topology may be inaccurate\n");
+        pr_warn_once("No PPTT table found, CPU and cache topology may be inaccurate\n");
 }
 
 /**
  * topology_get_acpi_cpu_tag() - Find a unique topology value for a feature
  * @table: Pointer to the head of the PPTT table
- * @cpu: Kernel logical cpu number
+ * @cpu: Kernel logical CPU number
  * @level: A level that terminates the search
  * @flag: A flag which terminates the search
  *
- * Get a unique value given a cpu, and a topology level, that can be
+ * Get a unique value given a CPU, and a topology level, that can be
  * matched to determine which cpus share common topological features
  * at that level.
  *
- * Return: Unique value, or -ENOENT if unable to locate cpu
+ * Return: Unique value, or -ENOENT if unable to locate CPU
  */
 static int topology_get_acpi_cpu_tag(struct acpi_table_header *table,
                                      unsigned int cpu, int level, int flag)
@@ -510,7 +510,7 @@ static int find_acpi_cpu_topology_tag(unsigned int cpu, int level, int flag)
                 return -ENOENT;
         }
         retval = topology_get_acpi_cpu_tag(table, cpu, level, flag);
-        pr_debug("Topology Setup ACPI cpu %d, level %d ret = %d\n",
+        pr_debug("Topology Setup ACPI CPU %d, level %d ret = %d\n",
                  cpu, level, retval);
         acpi_put_table(table);
 
@@ -519,9 +519,9 @@ static int find_acpi_cpu_topology_tag(unsigned int cpu, int level, int flag)
 
 /**
  * acpi_find_last_cache_level() - Determines the number of cache levels for a PE
- * @cpu: Kernel logical cpu number
+ * @cpu: Kernel logical CPU number
  *
- * Given a logical cpu number, returns the number of levels of cache represented
+ * Given a logical CPU number, returns the number of levels of cache represented
  * in the PPTT. Errors caused by lack of a PPTT table, or otherwise, return 0
  * indicating we didn't find any cache levels.
  *
@@ -534,7 +534,7 @@ int acpi_find_last_cache_level(unsigned int cpu)
         int number_of_levels = 0;
         acpi_status status;
 
-        pr_debug("Cache Setup find last level cpu=%d\n", cpu);
+        pr_debug("Cache Setup find last level CPU=%d\n", cpu);
 
         acpi_cpu_id = get_acpi_id_for_cpu(cpu);
         status = acpi_get_table(ACPI_SIG_PPTT, 0, &table);
@@ -551,14 +551,14 @@ int acpi_find_last_cache_level(unsigned int cpu)
 
 /**
  * cache_setup_acpi() - Override CPU cache topology with data from the PPTT
- * @cpu: Kernel logical cpu number
+ * @cpu: Kernel logical CPU number
  *
  * Updates the global cache info provided by cpu_get_cacheinfo()
  * when there are valid properties in the acpi_pptt_cache nodes. A
  * successful parse may not result in any updates if none of the
- * cache levels have any valid flags set.  Futher, a unique value is
+ * cache levels have any valid flags set.  Further, a unique value is
  * associated with each known CPU cache entry. This unique value
- * can be used to determine whether caches are shared between cpus.
+ * can be used to determine whether caches are shared between CPUs.
  *
  * Return: -ENOENT on failure to find table, or 0 on success
  */
@@ -567,7 +567,7 @@ int cache_setup_acpi(unsigned int cpu)
         struct acpi_table_header *table;
         acpi_status status;
 
-        pr_debug("Cache Setup ACPI cpu %d\n", cpu);
+        pr_debug("Cache Setup ACPI CPU %d\n", cpu);
 
         status = acpi_get_table(ACPI_SIG_PPTT, 0, &table);
         if (ACPI_FAILURE(status)) {
@@ -582,8 +582,8 @@ int cache_setup_acpi(unsigned int cpu)
 }
 
 /**
- * find_acpi_cpu_topology() - Determine a unique topology value for a given cpu
- * @cpu: Kernel logical cpu number
+ * find_acpi_cpu_topology() - Determine a unique topology value for a given CPU
+ * @cpu: Kernel logical CPU number
  * @level: The topological level for which we would like a unique ID
  *
  * Determine a topology unique ID for each thread/core/cluster/mc_grouping
@@ -596,7 +596,7 @@ int cache_setup_acpi(unsigned int cpu)
  * other levels beyond this use a generated value to uniquely identify
  * a topological feature.
  *
- * Return: -ENOENT if the PPTT doesn't exist, or the cpu cannot be found.
+ * Return: -ENOENT if the PPTT doesn't exist, or the CPU cannot be found.
  * Otherwise returns a value which represents a unique topological feature.
  */
 int find_acpi_cpu_topology(unsigned int cpu, int level)
@@ -606,12 +606,12 @@ int find_acpi_cpu_topology(unsigned int cpu, int level)
 
 /**
  * find_acpi_cpu_cache_topology() - Determine a unique cache topology value
- * @cpu: Kernel logical cpu number
+ * @cpu: Kernel logical CPU number
  * @level: The cache level for which we would like a unique ID
  *
  * Determine a unique ID for each unified cache in the system
  *
- * Return: -ENOENT if the PPTT doesn't exist, or the cpu cannot be found.
+ * Return: -ENOENT if the PPTT doesn't exist, or the CPU cannot be found.
  * Otherwise returns a value which represents a unique topological feature.
  */
 int find_acpi_cpu_cache_topology(unsigned int cpu, int level)
@@ -643,17 +643,17 @@ int find_acpi_cpu_cache_topology(unsigned int cpu, int level)
 
 
 /**
- * find_acpi_cpu_topology_package() - Determine a unique cpu package value
- * @cpu: Kernel logical cpu number
+ * find_acpi_cpu_topology_package() - Determine a unique CPU package value
+ * @cpu: Kernel logical CPU number
  *
- * Determine a topology unique package ID for the given cpu.
+ * Determine a topology unique package ID for the given CPU.
  * This ID can then be used to group peers, which will have matching ids.
  *
  * The search terminates when either a level is found with the PHYSICAL_PACKAGE
  * flag set or we reach a root node.
  *
- * Return: -ENOENT if the PPTT doesn't exist, or the cpu cannot be found.
- * Otherwise returns a value which represents the package for this cpu.
+ * Return: -ENOENT if the PPTT doesn't exist, or the CPU cannot be found.
+ * Otherwise returns a value which represents the package for this CPU.
  */
 int find_acpi_cpu_topology_package(unsigned int cpu)
 {
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 446c959a8f08..b845dc3e0ba9 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -763,18 +763,16 @@ acpi_bus_get_ejd(acpi_handle handle, acpi_handle *ejd)
 }
 EXPORT_SYMBOL_GPL(acpi_bus_get_ejd);
 
-static int acpi_bus_extract_wakeup_device_power_package(acpi_handle handle,
-                                        struct acpi_device_wakeup *wakeup)
+static int acpi_bus_extract_wakeup_device_power_package(struct acpi_device *dev)
 {
+        acpi_handle handle = dev->handle;
+        struct acpi_device_wakeup *wakeup = &dev->wakeup;
         struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
         union acpi_object *package = NULL;
         union acpi_object *element = NULL;
         acpi_status status;
         int err = -ENODATA;
 
-        if (!wakeup)
-                return -EINVAL;
-
         INIT_LIST_HEAD(&wakeup->resources);
 
         /* _PRW */
@@ -848,9 +846,9 @@ static int acpi_bus_extract_wakeup_device_power_package(acpi_handle handle,
 static bool acpi_wakeup_gpe_init(struct acpi_device *device)
 {
         static const struct acpi_device_id button_device_ids[] = {
-                {"PNP0C0C", 0},
-                {"PNP0C0D", 0},
-                {"PNP0C0E", 0},
+                {"PNP0C0C", 0},         /* Power button */
+                {"PNP0C0D", 0},         /* Lid */
+                {"PNP0C0E", 0},         /* Sleep button */
                 {"", 0},
         };
         struct acpi_device_wakeup *wakeup = &device->wakeup;
@@ -883,8 +881,7 @@ static void acpi_bus_get_wakeup_device_flags(struct acpi_device *device)
         if (!acpi_has_method(device->handle, "_PRW"))
                 return;
 
-        err = acpi_bus_extract_wakeup_device_power_package(device->handle,
-                                                           &device->wakeup);
+        err = acpi_bus_extract_wakeup_device_power_package(device);
         if (err) {
                 dev_err(&device->dev, "_PRW evaluation error: %d\n", err);
                 return;
@@ -895,7 +892,7 @@ static void acpi_bus_get_wakeup_device_flags(struct acpi_device *device)
         /*
          * Call _PSW/_DSW object to disable its ability to wake the sleeping
          * system for the ACPI device with the _PRW object.
-         * The _PSW object is depreciated in ACPI 3.0 and is replaced by _DSW.
+         * The _PSW object is deprecated in ACPI 3.0 and is replaced by _DSW.
          * So it is necessary to call _DSW object first. Only when it is not
          * present will the _PSW object used.
          */
@@ -2260,7 +2257,7 @@ int __init __acpi_probe_device_table(struct acpi_probe_entry *ap_head, int nr)
 
         mutex_lock(&acpi_probe_mutex);
         for (ape = ap_head; nr; ape++, nr--) {
-                if (ACPI_COMPARE_NAME(ACPI_SIG_MADT, ape->id)) {
+                if (ACPI_COMPARE_NAMESEG(ACPI_SIG_MADT, ape->id)) {
                         acpi_probe_count = 0;
                         acpi_table_parse_madt(ape->type, acpi_match_madt, 0);
                         count += acpi_probe_count;
diff --git a/drivers/acpi/spcr.c b/drivers/acpi/spcr.c
index c336784d0bcb..b34d05e365b7 100644
--- a/drivers/acpi/spcr.c
+++ b/drivers/acpi/spcr.c
@@ -28,7 +28,7 @@ EXPORT_SYMBOL(qdf2400_e44_present);
 
 /*
  * Some Qualcomm Datacenter Technologies SoCs have a defective UART BUSY bit.
- * Detect them by examining the OEM fields in the SPCR header, similiar to PCI
+ * Detect them by examining the OEM fields in the SPCR header, similar to PCI
  * quirk detection in pci_mcfg.c.
  */
 static bool qdf2400_erratum_44_present(struct acpi_table_header *h)
diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
index fa76f5e41b5c..75948a3f1a20 100644
--- a/drivers/acpi/sysfs.c
+++ b/drivers/acpi/sysfs.c
@@ -327,9 +327,9 @@ static struct kobject *hotplug_kobj;
 
 struct acpi_table_attr {
         struct bin_attribute attr;
-        char name[ACPI_NAME_SIZE];
+        char name[ACPI_NAMESEG_SIZE];
         int instance;
-        char filename[ACPI_NAME_SIZE+ACPI_INST_SIZE];
+        char filename[ACPI_NAMESEG_SIZE+ACPI_INST_SIZE];
         struct list_head node;
 };
 
@@ -368,10 +368,10 @@ static int acpi_table_attr_init(struct kobject *tables_obj,
         char instance_str[ACPI_INST_SIZE];
 
         sysfs_attr_init(&table_attr->attr.attr);
-        ACPI_MOVE_NAME(table_attr->name, table_header->signature);
+        ACPI_COPY_NAMESEG(table_attr->name, table_header->signature);
 
         list_for_each_entry(attr, &acpi_table_attr_list, node) {
-                if (ACPI_COMPARE_NAME(table_attr->name, attr->name))
+                if (ACPI_COMPARE_NAMESEG(table_attr->name, attr->name))
                         if (table_attr->instance < attr->instance)
                                 table_attr->instance = attr->instance;
         }
@@ -382,8 +382,8 @@ static int acpi_table_attr_init(struct kobject *tables_obj,
                 return -ERANGE;
         }
 
-        ACPI_MOVE_NAME(table_attr->filename, table_header->signature);
-        table_attr->filename[ACPI_NAME_SIZE] = '\0';
+        ACPI_COPY_NAMESEG(table_attr->filename, table_header->signature);
+        table_attr->filename[ACPI_NAMESEG_SIZE] = '\0';
         if (table_attr->instance > 1 || (table_attr->instance == 1 &&
                                          !acpi_get_table
                                          (table_header->signature, 2, &header))) {
@@ -484,7 +484,7 @@ static int acpi_table_data_init(struct acpi_table_header *th)
         int i;
 
         for (i = 0; i < NUM_ACPI_DATA_OBJS; i++) {
-                if (ACPI_COMPARE_NAME(th->signature, acpi_data_objs[i].name)) {
+                if (ACPI_COMPARE_NAMESEG(th->signature, acpi_data_objs[i].name)) {
                         data_attr = kzalloc(sizeof(*data_attr), GFP_KERNEL);
                         if (!data_attr)
                                 return -ENOMEM;
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index 8fccbe49612a..d7bf936b1646 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -240,8 +240,7 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header)
  * On success returns sum of all matching entries for all proc handlers.
  * Otherwise, -ENODEV or -EINVAL is returned.
  */
-static int __init
-acpi_parse_entries_array(char *id, unsigned long table_size,
+static int __init acpi_parse_entries_array(char *id, unsigned long table_size,
                 struct acpi_table_header *table_header,
                 struct acpi_subtable_proc *proc, int proc_num,
                 unsigned int max_entries)
@@ -314,8 +313,7 @@ acpi_parse_entries_array(char *id, unsigned long table_size,
         return errs ? -EINVAL : count;
 }
 
-int __init
-acpi_table_parse_entries_array(char *id,
+int __init acpi_table_parse_entries_array(char *id,
                          unsigned long table_size,
                          struct acpi_subtable_proc *proc, int proc_num,
                          unsigned int max_entries)
@@ -346,8 +344,7 @@ acpi_table_parse_entries_array(char *id,
         return count;
 }
 
-int __init
-acpi_table_parse_entries(char *id,
+int __init acpi_table_parse_entries(char *id,
                         unsigned long table_size,
                         int entry_id,
                         acpi_tbl_entry_handler handler,
@@ -362,8 +359,7 @@ acpi_table_parse_entries(char *id,
                                                 max_entries);
 }
 
-int __init
-acpi_table_parse_madt(enum acpi_madt_type id,
+int __init acpi_table_parse_madt(enum acpi_madt_type id,
                       acpi_tbl_entry_handler handler, unsigned int max_entries)
 {
         return acpi_table_parse_entries(ACPI_SIG_MADT,
@@ -670,8 +666,8 @@ static void __init acpi_table_initrd_scan(void)
                 table_length = table->length;
 
                 /* Skip RSDT/XSDT which should only be used for override */
-                if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_RSDT) ||
-                    ACPI_COMPARE_NAME(table->signature, ACPI_SIG_XSDT)) {
+                if (ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_RSDT) ||
+                    ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_XSDT)) {
                         acpi_os_unmap_memory(table, ACPI_HEADER_SIZE);
                         goto next_table;
                 }
@@ -725,8 +721,7 @@ static void *amlcode __attribute__ ((weakref("AmlCode")));
 static void *dsdt_amlcode __attribute__ ((weakref("dsdt_aml_code")));
 #endif
 
-acpi_status
-acpi_os_table_override(struct acpi_table_header *existing_table,
+acpi_status acpi_os_table_override(struct acpi_table_header *existing_table,
                        struct acpi_table_header **new_table)
 {
         if (!existing_table || !new_table)
@@ -788,7 +783,6 @@ static int __init acpi_parse_apic_instance(char *str)
 
         return 0;
 }
-
 early_param("acpi_apic_instance", acpi_parse_apic_instance);
 
 static int __init acpi_force_table_verification_setup(char *s)
@@ -797,7 +791,6 @@ static int __init acpi_force_table_verification_setup(char *s)
 
         return 0;
 }
-
 early_param("acpi_force_table_verification", acpi_force_table_verification_setup);
 
 static int __init acpi_force_32bit_fadt_addr(char *s)
@@ -807,5 +800,4 @@ static int __init acpi_force_32bit_fadt_addr(char *s)
 
         return 0;
 }
-
 early_param("acpi_force_32bit_fadt_addr", acpi_force_32bit_fadt_addr);
diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
index c4b06cc075f9..89363b245489 100644
--- a/drivers/acpi/utils.c
+++ b/drivers/acpi/utils.c
@@ -739,6 +739,7 @@ EXPORT_SYMBOL(acpi_dev_found);
 
 struct acpi_dev_match_info {
         const char *dev_name;
+        struct acpi_device *adev;
         struct acpi_device_id hid[2];
         const char *uid;
         s64 hrv;
@@ -759,6 +760,7 @@ static int acpi_dev_match_cb(struct device *dev, void *data)
                 return 0;
 
         match->dev_name = acpi_dev_name(adev);
+        match->adev = adev;
 
         if (match->hrv == -1)
                 return 1;
@@ -806,18 +808,20 @@ bool acpi_dev_present(const char *hid, const char *uid, s64 hrv)
 EXPORT_SYMBOL(acpi_dev_present);
 
 /**
- * acpi_dev_get_first_match_name - Return name of first match of ACPI device
+ * acpi_dev_get_first_match_dev - Return the first match of ACPI device
  * @hid: Hardware ID of the device.
  * @uid: Unique ID of the device, pass NULL to not check _UID
  * @hrv: Hardware Revision of the device, pass -1 to not check _HRV
  *
- * Return device name if a matching device was present
+ * Return the first match of ACPI device if a matching device was present
  * at the moment of invocation, or NULL otherwise.
  *
+ * The caller is responsible to call put_device() on the returned device.
+ *
  * See additional information in acpi_dev_present() as well.
  */
-const char *
-acpi_dev_get_first_match_name(const char *hid, const char *uid, s64 hrv)
+struct acpi_device *
+acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv)
 {
         struct acpi_dev_match_info match = {};
         struct device *dev;
@@ -827,9 +831,9 @@ acpi_dev_get_first_match_name(const char *hid, const char *uid, s64 hrv)
         match.hrv = hrv;
 
         dev = bus_find_device(&acpi_bus_type, NULL, &match, acpi_dev_match_cb);
-        return dev ? match.dev_name : NULL;
+        return dev ? match.adev : NULL;
 }
-EXPORT_SYMBOL(acpi_dev_get_first_match_name);
+EXPORT_SYMBOL(acpi_dev_get_first_match_dev);
 
 /*
  * acpi_backlight= handling, this is done here rather then in video_detect.c
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 43587ac680e4..31014c7d3793 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -112,7 +112,7 @@ static int video_detect_force_none(const struct dmi_system_id *d)
 static const struct dmi_system_id video_detect_dmi_table[] = {
         /* On Samsung X360, the BIOS will set a flag (VDRV) if generic
          * ACPI backlight device is used. This flag will definitively break
-         * the backlight interface (even the vendor interface) untill next
+         * the backlight interface (even the vendor interface) until next
          * reboot. It's why we should prevent video.ko from being used here
          * and we can't rely on a later call to acpi_video_unregister().
          */
@@ -141,6 +141,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
                 DMI_MATCH(DMI_PRODUCT_NAME, "UL30A"),
                 },
         },
+        {
+        .callback = video_detect_force_vendor,
+        .ident = "Sony VPCEH3U1E",
+        .matches = {
+                DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+                DMI_MATCH(DMI_PRODUCT_NAME, "VPCEH3U1E"),
+                },
+        },
 
         /*
          * These models have a working acpi_video backlight control, and using
diff --git a/drivers/extcon/extcon-axp288.c b/drivers/extcon/extcon-axp288.c
index a983708b77a6..50f9402fb325 100644
--- a/drivers/extcon/extcon-axp288.c
+++ b/drivers/extcon/extcon-axp288.c
@@ -333,7 +333,7 @@ static int axp288_extcon_probe(struct platform_device *pdev)
         struct axp288_extcon_info *info;
         struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
         struct device *dev = &pdev->dev;
-        const char *name;
+        struct acpi_device *adev;
         int ret, i, pirq;
 
         info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
@@ -357,9 +357,10 @@ static int axp288_extcon_probe(struct platform_device *pdev)
                 if (ret)
                         return ret;
 
-                name = acpi_dev_get_first_match_name("INT3496", NULL, -1);
-                if (name) {
-                        info->id_extcon = extcon_get_extcon_dev(name);
+                adev = acpi_dev_get_first_match_dev("INT3496", NULL, -1);
+                if (adev) {
+                        info->id_extcon = extcon_get_extcon_dev(acpi_dev_name(adev));
+                        put_device(&adev->dev);
                         if (!info->id_extcon)
                                 return -EPROBE_DEFER;
 
diff --git a/drivers/firmware/iscsi_ibft.c b/drivers/firmware/iscsi_ibft.c
index c51462f5aa1e..a5dc0629f225 100644
--- a/drivers/firmware/iscsi_ibft.c
+++ b/drivers/firmware/iscsi_ibft.c
@@ -425,7 +425,7 @@ static ssize_t ibft_attr_show_acpitbl(void *data, int type, char *buf)
 
         switch (type) {
         case ISCSI_BOOT_ACPITBL_SIGNATURE:
-                str += sprintf_string(str, ACPI_NAME_SIZE,
+                str += sprintf_string(str, ACPI_NAMESEG_SIZE,
                                       entry->header->header.signature);
                 break;
         case ISCSI_BOOT_ACPITBL_OEM_ID:
diff --git a/drivers/gpio/gpio-merrifield.c b/drivers/gpio/gpio-merrifield.c
index 7c659fdaa6d5..3302125e5265 100644
--- a/drivers/gpio/gpio-merrifield.c
+++ b/drivers/gpio/gpio-merrifield.c
@@ -377,10 +377,20 @@ static void mrfld_irq_init_hw(struct mrfld_gpio *priv)
         }
 }
 
-static const char *mrfld_gpio_get_pinctrl_dev_name(void)
+static const char *mrfld_gpio_get_pinctrl_dev_name(struct mrfld_gpio *priv)
 {
-        const char *dev_name = acpi_dev_get_first_match_name("INTC1002", NULL, -1);
-        return dev_name ? dev_name : "pinctrl-merrifield";
+        struct acpi_device *adev;
+        const char *name;
+
+        adev = acpi_dev_get_first_match_dev("INTC1002", NULL, -1);
+        if (adev) {
+                name = devm_kstrdup(priv->dev, acpi_dev_name(adev), GFP_KERNEL);
+                acpi_dev_put(adev);
+        } else {
+                name = "pinctrl-merrifield";
+        }
+
+        return name;
 }
 
 static int mrfld_gpio_probe(struct pci_dev *pdev, const struct pci_device_id *id)
@@ -441,7 +451,7 @@ static int mrfld_gpio_probe(struct pci_dev *pdev, const struct pci_device_id *id
                 return retval;
         }
 
-        pinctrl_dev_name = mrfld_gpio_get_pinctrl_dev_name();
+        pinctrl_dev_name = mrfld_gpio_get_pinctrl_dev_name(priv);
         for (i = 0; i < ARRAY_SIZE(mrfld_gpio_ranges); i++) {
                 range = &mrfld_gpio_ranges[i];
                 retval = gpiochip_add_pin_range(&priv->chip,
diff --git a/drivers/thermal/intel/int340x_thermal/acpi_thermal_rel.c b/drivers/thermal/intel/int340x_thermal/acpi_thermal_rel.c
index 45e7e5cbdffb..7c71ffb733a1 100644
--- a/drivers/thermal/intel/int340x_thermal/acpi_thermal_rel.c
+++ b/drivers/thermal/intel/int340x_thermal/acpi_thermal_rel.c
@@ -230,7 +230,7 @@ static void get_single_name(acpi_handle handle, char *name)
         if (ACPI_FAILURE(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)))
                 pr_warn("Failed to get device name from acpi handle\n");
         else {
-                memcpy(name, buffer.pointer, ACPI_NAME_SIZE);
+                memcpy(name, buffer.pointer, ACPI_NAMESEG_SIZE);
                 kfree(buffer.pointer);
         }
 }