diff options
Diffstat (limited to 'drivers/acpi/acpica/rscreate.c')
| -rw-r--r-- | drivers/acpi/acpica/rscreate.c | 61 |
1 files changed, 31 insertions, 30 deletions
diff --git a/drivers/acpi/acpica/rscreate.c b/drivers/acpi/acpica/rscreate.c index 65f3e1c5b59..049d9c22a0f 100644 --- a/drivers/acpi/acpica/rscreate.c +++ b/drivers/acpi/acpica/rscreate.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2013, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -72,6 +72,8 @@ acpi_buffer_to_resource(u8 *aml_buffer, void *resource; void *current_resource_ptr; + ACPI_FUNCTION_TRACE(acpi_buffer_to_resource); + /* * Note: we allow AE_AML_NO_RESOURCE_END_TAG, since an end tag * is not required here. @@ -85,7 +87,7 @@ acpi_buffer_to_resource(u8 *aml_buffer, status = AE_OK; } if (ACPI_FAILURE(status)) { - return (status); + return_ACPI_STATUS(status); } /* Allocate a buffer for the converted resource */ @@ -93,7 +95,7 @@ acpi_buffer_to_resource(u8 *aml_buffer, resource = ACPI_ALLOCATE_ZEROED(list_size_needed); current_resource_ptr = resource; if (!resource) { - return (AE_NO_MEMORY); + return_ACPI_STATUS(AE_NO_MEMORY); } /* Perform the AML-to-Resource conversion */ @@ -110,9 +112,11 @@ acpi_buffer_to_resource(u8 *aml_buffer, *resource_ptr = resource; } - return (status); + return_ACPI_STATUS(status); } +ACPI_EXPORT_SYMBOL(acpi_buffer_to_resource) + /******************************************************************************* * * FUNCTION: acpi_rs_create_resource_list @@ -130,10 +134,9 @@ acpi_buffer_to_resource(u8 *aml_buffer, * of device resources. * ******************************************************************************/ - acpi_status acpi_rs_create_resource_list(union acpi_operand_object *aml_buffer, - struct acpi_buffer * output_buffer) + struct acpi_buffer *output_buffer) { acpi_status status; @@ -273,7 +276,7 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object, */ user_prt->length = (sizeof(struct acpi_pci_routing_table) - 4); - /* Each sub-package must be of length 4 */ + /* Each subpackage must be of length 4 */ if ((*top_object_list)->package.count != 4) { ACPI_ERROR((AE_INFO, @@ -283,7 +286,7 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object, } /* - * Dereference the sub-package. + * Dereference the subpackage. * The sub_object_list will now point to an array of the four IRQ * elements: [Address, Pin, Source, source_index] */ @@ -292,7 +295,7 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object, /* 1) First subobject: Dereference the PRT.Address */ obj_desc = sub_object_list[0]; - if (obj_desc->common.type != ACPI_TYPE_INTEGER) { + if (!obj_desc || obj_desc->common.type != ACPI_TYPE_INTEGER) { ACPI_ERROR((AE_INFO, "(PRT[%u].Address) Need Integer, found %s", index, @@ -305,7 +308,7 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object, /* 2) Second subobject: Dereference the PRT.Pin */ obj_desc = sub_object_list[1]; - if (obj_desc->common.type != ACPI_TYPE_INTEGER) { + if (!obj_desc || obj_desc->common.type != ACPI_TYPE_INTEGER) { ACPI_ERROR((AE_INFO, "(PRT[%u].Pin) Need Integer, found %s", index, @@ -394,7 +397,7 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object, /* 4) Fourth subobject: Dereference the PRT.source_index */ obj_desc = sub_object_list[3]; - if (obj_desc->common.type != ACPI_TYPE_INTEGER) { + if (!obj_desc || obj_desc->common.type != ACPI_TYPE_INTEGER) { ACPI_ERROR((AE_INFO, "(PRT[%u].SourceIndex) Need Integer, found %s", index, @@ -418,22 +421,21 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object, * * FUNCTION: acpi_rs_create_aml_resources * - * PARAMETERS: linked_list_buffer - Pointer to the resource linked list - * output_buffer - Pointer to the user's buffer + * PARAMETERS: resource_list - Pointer to the resource list buffer + * output_buffer - Where the AML buffer is returned * * RETURN: Status AE_OK if okay, else a valid acpi_status code. * If the output_buffer is too small, the error will be * AE_BUFFER_OVERFLOW and output_buffer->Length will point * to the size buffer needed. * - * DESCRIPTION: Takes the linked list of device resources and - * creates a bytestream to be used as input for the - * _SRS control method. + * DESCRIPTION: Converts a list of device resources to an AML bytestream + * to be used as input for the _SRS control method. * ******************************************************************************/ acpi_status -acpi_rs_create_aml_resources(struct acpi_resource *linked_list_buffer, +acpi_rs_create_aml_resources(struct acpi_buffer *resource_list, struct acpi_buffer *output_buffer) { acpi_status status; @@ -441,16 +443,16 @@ acpi_rs_create_aml_resources(struct acpi_resource *linked_list_buffer, ACPI_FUNCTION_TRACE(rs_create_aml_resources); - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "LinkedListBuffer = %p\n", - linked_list_buffer)); + /* Params already validated, no need to re-validate here */ - /* - * Params already validated, so we don't re-validate here - * - * Pass the linked_list_buffer into a module that calculates - * the buffer size needed for the byte stream. - */ - status = acpi_rs_get_aml_length(linked_list_buffer, &aml_size_needed); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "ResourceList Buffer = %p\n", + resource_list->pointer)); + + /* Get the buffer size needed for the AML byte stream */ + + status = acpi_rs_get_aml_length(resource_list->pointer, + resource_list->length, + &aml_size_needed); ACPI_DEBUG_PRINT((ACPI_DB_INFO, "AmlSizeNeeded=%X, %s\n", (u32)aml_size_needed, acpi_format_exception(status))); @@ -467,10 +469,9 @@ acpi_rs_create_aml_resources(struct acpi_resource *linked_list_buffer, /* Do the conversion */ - status = - acpi_rs_convert_resources_to_aml(linked_list_buffer, - aml_size_needed, - output_buffer->pointer); + status = acpi_rs_convert_resources_to_aml(resource_list->pointer, + aml_size_needed, + output_buffer->pointer); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } |