1 files changed, 30 insertions, 20 deletions

diff --git a/drivers/acpi/namespace/nssearch.c b/drivers/acpi/namespace/nssearch.c
index c929f45071c0..51adec5a23d6 100644
--- a/drivers/acpi/namespace/nssearch.c
+++ b/drivers/acpi/namespace/nssearch.c
@@ -128,9 +128,8 @@ acpi_ns_search_node(u32 target_name,
                                                   next_node->object);
                         }
 
-                        /*
-                         * Found matching entry.
-                         */
+                        /* Found matching entry */
+
                         ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
                                           "Name [%4.4s] (%s) %p found in scope [%4.4s] %p\n",
                                           ACPI_CAST_PTR(char, &target_name),
@@ -248,10 +247,8 @@ acpi_ns_search_parent_tree(u32 target_name,
                         return_ACPI_STATUS(status);
                 }
 
-                /*
-                 * Not found here, go up another level
-                 * (until we reach the root)
-                 */
+                /* Not found here, go up another level (until we reach the root) */
+
                 parent_node = acpi_ns_get_parent_node(parent_node);
         }
 
@@ -307,12 +304,29 @@ acpi_ns_search_and_enter(u32 target_name,
                 return_ACPI_STATUS(AE_BAD_PARAMETER);
         }
 
-        /* Name must consist of printable characters */
-
+        /*
+         * Name must consist of valid ACPI characters. We will repair the name if
+         * necessary because we don't want to abort because of this, but we want
+         * all namespace names to be printable. A warning message is appropriate.
+         *
+         * This issue came up because there are in fact machines that exhibit
+         * this problem, and we want to be able to enable ACPI support for them,
+         * even though there are a few bad names.
+         */
         if (!acpi_ut_valid_acpi_name(target_name)) {
-                ACPI_ERROR((AE_INFO, "Bad character in ACPI Name: %X",
-                            target_name));
-                return_ACPI_STATUS(AE_BAD_CHARACTER);
+                target_name = acpi_ut_repair_name(target_name);
+
+                /* Report warning only if in strict mode or debug mode */
+
+                if (!acpi_gbl_enable_interpreter_slack) {
+                        ACPI_WARNING((AE_INFO,
+                                      "Found bad character(s) in name, repaired: [%4.4s]\n",
+                                      ACPI_CAST_PTR(char, &target_name)));
+                } else {
+                        ACPI_DEBUG_PRINT((ACPI_DB_WARN,
+                                          "Found bad character(s) in name, repaired: [%4.4s]\n",
+                                          ACPI_CAST_PTR(char, &target_name)));
+                }
         }
 
         /* Try to find the name in the namespace level specified by the caller */
@@ -328,10 +342,8 @@ acpi_ns_search_and_enter(u32 target_name,
                         status = AE_ALREADY_EXISTS;
                 }
 
-                /*
-                 * Either found it or there was an error
-                 * -- finished either way
-                 */
+                /* Either found it or there was an error: finished either way */
+
                 return_ACPI_STATUS(status);
         }
 
@@ -357,9 +369,8 @@ acpi_ns_search_and_enter(u32 target_name,
                 }
         }
 
-        /*
-         * In execute mode, just search, never add names.  Exit now.
-         */
+        /* In execute mode, just search, never add names. Exit now */
+
         if (interpreter_mode == ACPI_IMODE_EXECUTE) {
                 ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
                                   "%4.4s Not found in %p [Not adding]\n",
@@ -379,6 +390,5 @@ acpi_ns_search_and_enter(u32 target_name,
 
         acpi_ns_install_node(walk_state, node, new_node, type);
         *return_node = new_node;
-
         return_ACPI_STATUS(AE_OK);
 }