Sort list based on the C-state, remove invalid/zero entries. ACPICA BZ 890. Lv Zheng. Buglink: https://bugs.acpica.org/show_bug.cgi?id=890 Signed-off-by: Lv Zheng <lv.zheng@xxxxxxxxx> Signed-off-by: Bob Moore <robert.moore@xxxxxxxxx> --- drivers/acpi/acpica/nspredef.c | 5 +- drivers/acpi/acpica/nsrepair2.c | 170 ++++++++++++++++++++++++++++++++++++--- 2 files changed, 163 insertions(+), 12 deletions(-) diff --git a/drivers/acpi/acpica/nspredef.c b/drivers/acpi/acpica/nspredef.c index 8d59ac2..24b71a0 100644 --- a/drivers/acpi/acpica/nspredef.c +++ b/drivers/acpi/acpica/nspredef.c @@ -159,9 +159,10 @@ acpi_ns_check_return_value(struct acpi_namespace_node *node, status = acpi_ns_check_package(info, return_object_ptr); if (ACPI_FAILURE(status)) { - /* We might be able to fix an operand type error (_PRT) */ + /* We might be able to fix some errors */ - if (status != AE_AML_OPERAND_TYPE) { + if ((status != AE_AML_OPERAND_TYPE) && + (status != AE_AML_OPERAND_VALUE)) { goto exit; } } diff --git a/drivers/acpi/acpica/nsrepair2.c b/drivers/acpi/acpica/nsrepair2.c index aca9bdf..029816e 100644 --- a/drivers/acpi/acpica/nsrepair2.c +++ b/drivers/acpi/acpica/nsrepair2.c @@ -79,6 +79,10 @@ acpi_ns_repair_CID(struct acpi_evaluate_info *info, union acpi_operand_object **return_object_ptr); static acpi_status +acpi_ns_repair_CST(struct acpi_evaluate_info *info, + union acpi_operand_object **return_object_ptr); + +static acpi_status acpi_ns_repair_FDE(struct acpi_evaluate_info *info, union acpi_operand_object **return_object_ptr); @@ -101,19 +105,23 @@ acpi_ns_repair_TSS(struct acpi_evaluate_info *info, static acpi_status acpi_ns_check_sorted_list(struct acpi_evaluate_info *info, union acpi_operand_object *return_object, + u32 start_index, u32 expected_count, u32 sort_index, u8 sort_direction, char *sort_key_name); -static void -acpi_ns_sort_list(union acpi_operand_object **elements, - u32 count, u32 index, u8 sort_direction); - /* Values for sort_direction above */ #define ACPI_SORT_ASCENDING 0 #define ACPI_SORT_DESCENDING 1 +static void +acpi_ns_remove_element(union acpi_operand_object *obj_desc, u32 index); + +static void +acpi_ns_sort_list(union acpi_operand_object **elements, + u32 count, u32 index, u8 sort_direction); + /* * This table contains the names of the predefined methods for which we can * perform more complex repairs. @@ -122,6 +130,7 @@ acpi_ns_sort_list(union acpi_operand_object **elements, * * _ALR: Sort the list ascending by ambient_illuminance * _CID: Strings: uppercase all, remove any leading asterisk + * _CST: Sort the list ascending by C state type * _FDE: Convert Buffer of BYTEs to a Buffer of DWORDs * _GTM: Convert Buffer of BYTEs to a Buffer of DWORDs * _HID: Strings: uppercase all, remove any leading asterisk @@ -139,6 +148,7 @@ acpi_ns_sort_list(union acpi_operand_object **elements, static const struct acpi_repair_info acpi_ns_repairable_names[] = { {"_ALR", acpi_ns_repair_ALR}, {"_CID", acpi_ns_repair_CID}, + {"_CST", acpi_ns_repair_CST}, {"_FDE", acpi_ns_repair_FDE}, {"_GTM", acpi_ns_repair_FDE}, /* _GTM has same repair as _FDE */ {"_HID", acpi_ns_repair_HID}, @@ -243,7 +253,7 @@ acpi_ns_repair_ALR(struct acpi_evaluate_info *info, union acpi_operand_object *return_object = *return_object_ptr; acpi_status status; - status = acpi_ns_check_sorted_list(info, return_object, 2, 1, + status = acpi_ns_check_sorted_list(info, return_object, 0, 2, 1, ACPI_SORT_ASCENDING, "AmbientIlluminance"); @@ -411,6 +421,92 @@ acpi_ns_repair_CID(struct acpi_evaluate_info *info, /****************************************************************************** * + * FUNCTION: acpi_ns_repair_CST + * + * PARAMETERS: info - Method execution information block + * return_object_ptr - Pointer to the object returned from the + * evaluation of a method or object + * + * RETURN: Status. AE_OK if object is OK or was repaired successfully + * + * DESCRIPTION: Repair for the _CST object: + * 1. Sort the list ascending by C state type + * 2. Ensure type cannot be zero + * 3. A sub-package count of zero means _CST is meaningless + * 4. Count must match the number of C state sub-packages + * + *****************************************************************************/ + +static acpi_status +acpi_ns_repair_CST(struct acpi_evaluate_info *info, + union acpi_operand_object **return_object_ptr) +{ + union acpi_operand_object *return_object = *return_object_ptr; + union acpi_operand_object **outer_elements; + u32 outer_element_count; + union acpi_operand_object *obj_desc; + acpi_status status; + u8 removing; + u32 i; + + ACPI_FUNCTION_NAME(ns_repair_CST); + + /* + * Entries (subpackages) in the _CST Package must be sorted by the + * C-state type, in ascending order. + */ + status = acpi_ns_check_sorted_list(info, return_object, 1, 4, 1, + ACPI_SORT_ASCENDING, "C-State Type"); + if (ACPI_FAILURE(status)) { + return (status); + } + + /* + * We now know the list is correctly sorted by C-state type. Check if + * the C-state type values are proportional. + */ + outer_element_count = return_object->package.count - 1; + i = 0; + while (i < outer_element_count) { + outer_elements = &return_object->package.elements[i + 1]; + removing = FALSE; + + if ((*outer_elements)->package.count == 0) { + ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, + info->node_flags, + "SubPackage[%u] - removing entry due to zero count", + i)); + removing = TRUE; + goto remove_element; + } + + obj_desc = (*outer_elements)->package.elements[1]; /* Index1 = Type */ + if ((u32)obj_desc->integer.value == 0) { + ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, + info->node_flags, + "SubPackage[%u] - removing entry due to invalid Type(0)", + i)); + removing = TRUE; + } + + remove_element: + if (removing) { + acpi_ns_remove_element(return_object, i + 1); + outer_element_count--; + } else { + i++; + } + } + + /* Update top-level package count, Type "Integer" checked elsewhere */ + + obj_desc = return_object->package.elements[0]; + obj_desc->integer.value = outer_element_count; + return (AE_OK); +} + +/****************************************************************************** + * * FUNCTION: acpi_ns_repair_HID * * PARAMETERS: info - Method execution information block @@ -588,7 +684,7 @@ acpi_ns_repair_PSS(struct acpi_evaluate_info *info, * incorrectly sorted, sort it. We sort by cpu_frequency, since this * should be proportional to the power. */ - status = acpi_ns_check_sorted_list(info, return_object, 6, 0, + status = acpi_ns_check_sorted_list(info, return_object, 0, 6, 0, ACPI_SORT_DESCENDING, "CpuFrequency"); if (ACPI_FAILURE(status)) { @@ -658,7 +754,7 @@ acpi_ns_repair_TSS(struct acpi_evaluate_info *info, return (AE_OK); } - status = acpi_ns_check_sorted_list(info, return_object, 5, 1, + status = acpi_ns_check_sorted_list(info, return_object, 0, 5, 1, ACPI_SORT_DESCENDING, "PowerDissipation"); @@ -671,6 +767,7 @@ acpi_ns_repair_TSS(struct acpi_evaluate_info *info, * * PARAMETERS: info - Method execution information block * return_object - Pointer to the top-level returned object + * start_index - Index of the first sub-package * expected_count - Minimum length of each sub-package * sort_index - Sub-package entry to sort on * sort_direction - Ascending or descending @@ -687,6 +784,7 @@ acpi_ns_repair_TSS(struct acpi_evaluate_info *info, static acpi_status acpi_ns_check_sorted_list(struct acpi_evaluate_info *info, union acpi_operand_object *return_object, + u32 start_index, u32 expected_count, u32 sort_index, u8 sort_direction, char *sort_key_name) @@ -711,12 +809,14 @@ acpi_ns_check_sorted_list(struct acpi_evaluate_info *info, * Any NULL elements should have been removed by earlier call * to acpi_ns_remove_null_elements. */ - outer_elements = return_object->package.elements; outer_element_count = return_object->package.count; - if (!outer_element_count) { + if (!outer_element_count || start_index >= outer_element_count) { return (AE_AML_PACKAGE_LIMIT); } + outer_elements = &return_object->package.elements[start_index]; + outer_element_count -= start_index; + previous_value = 0; if (sort_direction == ACPI_SORT_DESCENDING) { previous_value = ACPI_UINT32_MAX; @@ -753,7 +853,8 @@ acpi_ns_check_sorted_list(struct acpi_evaluate_info *info, (obj_desc->integer.value < previous_value)) || ((sort_direction == ACPI_SORT_DESCENDING) && (obj_desc->integer.value > previous_value))) { - acpi_ns_sort_list(return_object->package.elements, + acpi_ns_sort_list(&return_object->package. + elements[start_index], outer_element_count, sort_index, sort_direction); @@ -820,3 +921,52 @@ acpi_ns_sort_list(union acpi_operand_object **elements, } } } + +/****************************************************************************** + * + * FUNCTION: acpi_ns_remove_element + * + * PARAMETERS: obj_desc - Package object element list + * index - Index of element to remove + * + * RETURN: None + * + * DESCRIPTION: Remove the requested element of a package and delete it. + * + *****************************************************************************/ + +static void +acpi_ns_remove_element(union acpi_operand_object *obj_desc, u32 index) +{ + union acpi_operand_object **source; + union acpi_operand_object **dest; + u32 count; + u32 new_count; + u32 i; + + ACPI_FUNCTION_NAME(ns_remove_element); + + count = obj_desc->package.count; + new_count = count - 1; + + source = obj_desc->package.elements; + dest = source; + + /* Examine all elements of the package object, remove matched index */ + + for (i = 0; i < count; i++) { + if (i == index) { + acpi_ut_remove_reference(*source); /* Remove one ref for being in pkg */ + acpi_ut_remove_reference(*source); + } else { + *dest = *source; + dest++; + } + source++; + } + + /* NULL terminate list and update the package count */ + + *dest = NULL; + obj_desc->package.count = new_count; +} -- 1.7.10 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
