X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Facpi%2Futils.c;h=b002a471c5d49d7afdb9c5db81e78ae65743c4ff;hb=4434ade8c9334a3ab975d8993de456f06841899e;hp=f48227f4c8c9183f03e224852af6fa2f1c14c129;hpb=02438d8771ae6a4b215938959827692026380bf9;p=safe%2Fjmp%2Flinux-2.6 diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index f48227f..b002a47 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -25,27 +25,34 @@ #include #include +#include #include #include #include #include +#include "internal.h" + #define _COMPONENT ACPI_BUS_COMPONENT -ACPI_MODULE_NAME("acpi_utils") +ACPI_MODULE_NAME("utils"); /* -------------------------------------------------------------------------- Object Evaluation Helpers -------------------------------------------------------------------------- */ +static void +acpi_util_eval_error(acpi_handle h, acpi_string p, acpi_status s) +{ #ifdef ACPI_DEBUG_OUTPUT -#define acpi_util_eval_error(h,p,s) {\ - char prefix[80] = {'\0'};\ - struct acpi_buffer buffer = {sizeof(prefix), prefix};\ - acpi_get_name(h, ACPI_FULL_PATHNAME, &buffer);\ - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Evaluate [%s.%s]: %s\n",\ - (char *) prefix, p, acpi_format_exception(s))); } + char prefix[80] = {'\0'}; + struct acpi_buffer buffer = {sizeof(prefix), prefix}; + acpi_get_name(h, ACPI_FULL_PATHNAME, &buffer); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Evaluate [%s.%s]: %s\n", + (char *) prefix, p, acpi_format_exception(s))); #else -#define acpi_util_eval_error(h,p,s) + return; #endif +} + acpi_status acpi_extract_package(union acpi_object *package, struct acpi_buffer *format, struct acpi_buffer *buffer) @@ -83,7 +90,7 @@ acpi_extract_package(union acpi_object *package, return AE_BAD_DATA; } - format_string = (char *)format->pointer; + format_string = format->pointer; /* * Calculate size_required. @@ -101,12 +108,12 @@ acpi_extract_package(union acpi_object *package, case ACPI_TYPE_INTEGER: switch (format_string[i]) { case 'N': - size_required += sizeof(acpi_integer); - tail_offset += sizeof(acpi_integer); + size_required += sizeof(u64); + tail_offset += sizeof(u64); break; case 'S': size_required += - sizeof(char *) + sizeof(acpi_integer) + + sizeof(char *) + sizeof(u64) + sizeof(char); tail_offset += sizeof(char *); break; @@ -187,17 +194,17 @@ acpi_extract_package(union acpi_object *package, case ACPI_TYPE_INTEGER: switch (format_string[i]) { case 'N': - *((acpi_integer *) head) = + *((u64 *) head) = element->integer.value; - head += sizeof(acpi_integer); + head += sizeof(u64); break; case 'S': pointer = (u8 **) head; *pointer = tail; - *((acpi_integer *) tail) = + *((u64 *) tail) = element->integer.value; - head += sizeof(acpi_integer *); - tail += sizeof(acpi_integer); + head += sizeof(u64 *); + tail += sizeof(u64); /* NULL terminate string */ *tail = (char)0; tail += sizeof(char); @@ -252,92 +259,37 @@ EXPORT_SYMBOL(acpi_extract_package); acpi_status acpi_evaluate_integer(acpi_handle handle, acpi_string pathname, - struct acpi_object_list *arguments, unsigned long *data) + struct acpi_object_list *arguments, unsigned long long *data) { acpi_status status = AE_OK; - union acpi_object *element; + union acpi_object element; struct acpi_buffer buffer = { 0, NULL }; - if (!data) return AE_BAD_PARAMETER; - element = kmalloc(sizeof(union acpi_object), GFP_KERNEL); - if (!element) - return AE_NO_MEMORY; - - memset(element, 0, sizeof(union acpi_object)); buffer.length = sizeof(union acpi_object); - buffer.pointer = element; + buffer.pointer = &element; status = acpi_evaluate_object(handle, pathname, arguments, &buffer); if (ACPI_FAILURE(status)) { acpi_util_eval_error(handle, pathname, status); - kfree(element); return status; } - if (element->type != ACPI_TYPE_INTEGER) { + if (element.type != ACPI_TYPE_INTEGER) { acpi_util_eval_error(handle, pathname, AE_BAD_DATA); - kfree(element); return AE_BAD_DATA; } - *data = element->integer.value; - kfree(element); + *data = element.integer.value; - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Return value [%lu]\n", *data)); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Return value [%llu]\n", *data)); return AE_OK; } EXPORT_SYMBOL(acpi_evaluate_integer); -#if 0 -acpi_status -acpi_evaluate_string(acpi_handle handle, - acpi_string pathname, - acpi_object_list * arguments, acpi_string * data) -{ - acpi_status status = AE_OK; - acpi_object *element = NULL; - acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; - - - if (!data) - return AE_BAD_PARAMETER; - - status = acpi_evaluate_object(handle, pathname, arguments, &buffer); - if (ACPI_FAILURE(status)) { - acpi_util_eval_error(handle, pathname, status); - return status; - } - - element = (acpi_object *) buffer.pointer; - - if ((element->type != ACPI_TYPE_STRING) - || (element->type != ACPI_TYPE_BUFFER) - || !element->string.length) { - acpi_util_eval_error(handle, pathname, AE_BAD_DATA); - return AE_BAD_DATA; - } - - *data = kmalloc(element->string.length + 1, GFP_KERNEL); - if (!data) { - printk(KERN_ERR PREFIX "Memory allocation\n"); - return -ENOMEM; - } - memset(*data, 0, element->string.length + 1); - - memcpy(*data, element->string.pointer, element->string.length); - - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Return value [%s]\n", *data)); - - kfree(buffer.pointer); - - return AE_OK; -} -#endif - acpi_status acpi_evaluate_reference(acpi_handle handle, acpi_string pathname, @@ -361,7 +313,7 @@ acpi_evaluate_reference(acpi_handle handle, if (ACPI_FAILURE(status)) goto end; - package = (union acpi_object *)buffer.pointer; + package = buffer.pointer; if ((buffer.length == 0) || !package) { printk(KERN_ERR PREFIX "No return object (len %X ptr %p)\n", @@ -396,7 +348,7 @@ acpi_evaluate_reference(acpi_handle handle, element = &(package->package.elements[i]); - if (element->type != ACPI_TYPE_ANY) { + if (element->type != ACPI_TYPE_LOCAL_REFERENCE) { status = AE_BAD_DATA; printk(KERN_ERR PREFIX "Expecting a [Reference] package element, found type %X\n", @@ -405,6 +357,12 @@ acpi_evaluate_reference(acpi_handle handle, break; } + if (!element->reference.handle) { + printk(KERN_WARNING PREFIX "Invalid reference in" + " package %s\n", pathname); + status = AE_NULL_ENTRY; + break; + } /* Get the acpi_handle. */ list->handles[i] = element->reference.handle;