[ACPI] ACPICA 20050902

Fixed a problem with the internal Owner ID allocation and
deallocation mechanisms for control method execution and
recursive method invocation.  This should eliminate the
OWNER_ID_LIMIT exceptions and "Invalid OwnerId" messages
seen on some systems.  Recursive method invocation depth
is currently limited to 255.  (Alexey Starikovskiy)

http://bugzilla.kernel.org/show_bug.cgi?id=4892

Completely eliminated all vestiges of support for the
"module-level executable code" until this support is
fully implemented and debugged.  This should eliminate the
NO_RETURN_VALUE exceptions seen during table load on some
systems that invoke this support.

http://bugzilla.kernel.org/show_bug.cgi?id=5162

Fixed a problem within the resource manager code where
the transaction flags for a 64-bit address descriptor were
handled incorrectly in the type-specific flag byte.

Consolidated duplicate code within the address descriptor
resource manager code, reducing overall subsystem code size.

Signed-off-by: Robert Moore <Robert.Moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

2 files changed, 266 insertions, 297 deletions

diff --git a/drivers/acpi/resources/rsaddr.c b/drivers/acpi/resources/rsaddr.c
index 4cf46e1ee01b..23b54baa0cb2 100644
--- a/drivers/acpi/resources/rsaddr.c
+++ b/drivers/acpi/resources/rsaddr.c
@@ -47,6 +47,180 @@
 #define _COMPONENT          ACPI_RESOURCES
 ACPI_MODULE_NAME("rsaddr")
 
+/* Local prototypes */
+static void
+acpi_rs_decode_general_flags(union acpi_resource_data *resource, u8 flags);
+
+static u8 acpi_rs_encode_general_flags(union acpi_resource_data *resource);
+
+static void
+acpi_rs_decode_specific_flags(union acpi_resource_data *resource, u8 flags);
+
+static u8 acpi_rs_encode_specific_flags(union acpi_resource_data *resource);
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_decode_general_flags
+ *
+ * PARAMETERS:  Resource            - Address resource data struct
+ *              Flags               - Actual flag byte
+ *
+ * RETURN:      Decoded flag bits in resource struct
+ *
+ * DESCRIPTION: Decode a general flag byte to an address resource struct
+ *
+ ******************************************************************************/
+
+static void
+acpi_rs_decode_general_flags(union acpi_resource_data *resource, u8 flags)
+{
+        ACPI_FUNCTION_ENTRY();
+
+        /* Producer / Consumer - flag bit[0] */
+
+        resource->address.producer_consumer = (u32) (flags & 0x01);
+
+        /* Decode (_DEC) - flag bit[1] */
+
+        resource->address.decode = (u32) ((flags >> 1) & 0x01);
+
+        /* Min Address Fixed (_MIF) - flag bit[2] */
+
+        resource->address.min_address_fixed = (u32) ((flags >> 2) & 0x01);
+
+        /* Max Address Fixed (_MAF) - flag bit[3] */
+
+        resource->address.max_address_fixed = (u32) ((flags >> 3) & 0x01);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_encode_general_flags
+ *
+ * PARAMETERS:  Resource            - Address resource data struct
+ *
+ * RETURN:      Encoded general flag byte
+ *
+ * DESCRIPTION: Construct a general flag byte from an address resource struct
+ *
+ ******************************************************************************/
+
+static u8 acpi_rs_encode_general_flags(union acpi_resource_data *resource)
+{
+        u8 flags;
+
+        ACPI_FUNCTION_ENTRY();
+
+        /* Producer / Consumer - flag bit[0] */
+
+        flags = (u8) (resource->address.producer_consumer & 0x01);
+
+        /* Decode (_DEC) - flag bit[1] */
+
+        flags |= (u8) ((resource->address.decode & 0x01) << 1);
+
+        /* Min Address Fixed (_MIF) - flag bit[2] */
+
+        flags |= (u8) ((resource->address.min_address_fixed & 0x01) << 2);
+
+        /* Max Address Fixed (_MAF) - flag bit[3] */
+
+        flags |= (u8) ((resource->address.max_address_fixed & 0x01) << 3);
+
+        return (flags);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_decode_specific_flags
+ *
+ * PARAMETERS:  Resource            - Address resource data struct
+ *              Flags               - Actual flag byte
+ *
+ * RETURN:      Decoded flag bits in attribute struct
+ *
+ * DESCRIPTION: Decode a type-specific flag byte to an attribute struct.
+ *              Type-specific flags are only defined for the Memory and IO
+ *              resource types.
+ *
+ ******************************************************************************/
+
+static void
+acpi_rs_decode_specific_flags(union acpi_resource_data *resource, u8 flags)
+{
+        ACPI_FUNCTION_ENTRY();
+
+        if (resource->address.resource_type == ACPI_MEMORY_RANGE) {
+                /* Write Status (_RW) - flag bit[0] */
+
+                resource->address.attribute.memory.read_write_attribute =
+                    (u16) (flags & 0x01);
+
+                /* Memory Attributes (_MEM) - flag bits[2:1] */
+
+                resource->address.attribute.memory.cache_attribute =
+                    (u16) ((flags >> 1) & 0x03);
+        } else if (resource->address.resource_type == ACPI_IO_RANGE) {
+                /* Ranges (_RNG) - flag bits[1:0] */
+
+                resource->address.attribute.io.range_attribute =
+                    (u16) (flags & 0x03);
+
+                /* Translations (_TTP and _TRS) - flag bits[5:4] */
+
+                resource->address.attribute.io.translation_attribute =
+                    (u16) ((flags >> 4) & 0x03);
+        }
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_encode_specific_flags
+ *
+ * PARAMETERS:  Resource            - Address resource data struct
+ *
+ * RETURN:      Encoded type-specific flag byte
+ *
+ * DESCRIPTION: Construct a type-specific flag byte from an attribute struct.
+ *              Type-specific flags are only defined for the Memory and IO
+ *              resource types.
+ *
+ ******************************************************************************/
+
+static u8 acpi_rs_encode_specific_flags(union acpi_resource_data *resource)
+{
+        u8 flags = 0;
+
+        ACPI_FUNCTION_ENTRY();
+
+        if (resource->address.resource_type == ACPI_MEMORY_RANGE) {
+                /* Write Status (_RW) - flag bit[0] */
+
+                flags = (u8)
+                    (resource->address.attribute.memory.
+                     read_write_attribute & 0x01);
+
+                /* Memory Attributes (_MEM) - flag bits[2:1] */
+
+                flags |= (u8)
+                    ((resource->address.attribute.memory.
+                      cache_attribute & 0x03) << 1);
+        } else if (resource->address.resource_type == ACPI_IO_RANGE) {
+                /* Ranges (_RNG) - flag bits[1:0] */
+
+                flags = (u8)
+                    (resource->address.attribute.io.range_attribute & 0x03);
+
+                /* Translations (_TTP and _TRS) - flag bits[5:4] */
+
+                flags |= (u8)
+                    ((resource->address.attribute.io.
+                      translation_attribute & 0x03) << 4);
+        }
+
+        return (flags);
+}
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_rs_address16_resource
@@ -67,6 +241,7 @@ ACPI_MODULE_NAME("rsaddr")
  *              number of bytes consumed from the byte stream.
  *
  ******************************************************************************/
+
 acpi_status
 acpi_rs_address16_resource(u8 * byte_stream_buffer,
                            acpi_size * bytes_consumed,
@@ -83,7 +258,7 @@ acpi_rs_address16_resource(u8 * byte_stream_buffer,
 
         ACPI_FUNCTION_TRACE("rs_address16_resource");
 
-        /* Point past the Descriptor to get the number of bytes consumed */
+        /* Get the Descriptor Length field */
 
         buffer += 1;
         ACPI_MOVE_16_TO_16(&temp16, buffer);
@@ -113,46 +288,12 @@ acpi_rs_address16_resource(u8 * byte_stream_buffer,
         /* Get the General Flags (Byte4) */
 
         buffer += 1;
-        temp8 = *buffer;
-
-        /* Producer / Consumer */
-
-        output_struct->data.address16.producer_consumer = temp8 & 0x01;
-
-        /* Decode */
-
-        output_struct->data.address16.decode = (temp8 >> 1) & 0x01;
-
-        /* Min Address Fixed */
-
-        output_struct->data.address16.min_address_fixed = (temp8 >> 2) & 0x01;
-
-        /* Max Address Fixed */
-
-        output_struct->data.address16.max_address_fixed = (temp8 >> 3) & 0x01;
+        acpi_rs_decode_general_flags(&output_struct->data, *buffer);
 
         /* Get the Type Specific Flags (Byte5) */
 
         buffer += 1;
-        temp8 = *buffer;
-
-        if (ACPI_MEMORY_RANGE == output_struct->data.address16.resource_type) {
-                output_struct->data.address16.attribute.memory.
-                    read_write_attribute = (u16) (temp8 & 0x01);
-                output_struct->data.address16.attribute.memory.cache_attribute =
-                    (u16) ((temp8 >> 1) & 0x03);
-        } else {
-                if (ACPI_IO_RANGE ==
-                    output_struct->data.address16.resource_type) {
-                        output_struct->data.address16.attribute.io.
-                            range_attribute = (u16) (temp8 & 0x03);
-                        output_struct->data.address16.attribute.io.
-                            translation_attribute = (u16) ((temp8 >> 4) & 0x03);
-                } else {
-                        /* BUS_NUMBER_RANGE == Address16.Data->resource_type */
-                        /* Nothing needs to be filled in */
-                }
-        }
+        acpi_rs_decode_specific_flags(&output_struct->data, *buffer);
 
         /* Get Granularity (Bytes 6-7) */
 
@@ -200,9 +341,8 @@ acpi_rs_address16_resource(u8 * byte_stream_buffer,
         if (*bytes_consumed > (16 + 1)) {
                 /* Dereference the Index */
 
-                temp8 = *buffer;
                 output_struct->data.address16.resource_source.index =
-                    (u32) temp8;
+                    (u32) * buffer;
 
                 /* Point to the String */
 
@@ -216,22 +356,20 @@ acpi_rs_address16_resource(u8 * byte_stream_buffer,
                 temp_ptr = (u8 *)
                     output_struct->data.address16.resource_source.string_ptr;
 
-                /* Copy the string into the buffer */
+                /* Copy the resource_source string into the buffer */
 
                 index = 0;
-
-                while (0x00 != *buffer) {
+                while (*buffer) {
                         *temp_ptr = *buffer;
 
-                        temp_ptr += 1;
-                        buffer += 1;
-                        index += 1;
+                        temp_ptr++;
+                        buffer++;
+                        index++;
                 }
 
-                /* Add the terminating null */
-
-                *temp_ptr = 0x00;
+                /* Add the terminating null and set the string length */
 
+                *temp_ptr = 0;
                 output_struct->data.address16.resource_source.string_length =
                     index + 1;
 
@@ -243,7 +381,7 @@ acpi_rs_address16_resource(u8 * byte_stream_buffer,
                 temp8 = (u8) (index + 1);
                 struct_size += ACPI_ROUND_UP_to_32_bITS(temp8);
         } else {
-                output_struct->data.address16.resource_source.index = 0x00;
+                output_struct->data.address16.resource_source.index = 0;
                 output_struct->data.address16.resource_source.string_length = 0;
                 output_struct->data.address16.resource_source.string_ptr = NULL;
         }
@@ -280,15 +418,13 @@ acpi_rs_address16_stream(struct acpi_resource *linked_list,
 {
         u8 *buffer = *output_buffer;
         u8 *length_field;
-        u8 temp8;
-        char *temp_pointer = NULL;
         acpi_size actual_bytes;
 
         ACPI_FUNCTION_TRACE("rs_address16_stream");
 
-        /* The descriptor field is static */
+        /* Set the Descriptor Type field */
 
-        *buffer = 0x88;
+        *buffer = ACPI_RDESC_TYPE_WORD_ADDRESS_SPACE;
         buffer += 1;
 
         /* Save a pointer to the Length field - to be filled in later */
@@ -298,43 +434,17 @@ acpi_rs_address16_stream(struct acpi_resource *linked_list,
 
         /* Set the Resource Type (Memory, Io, bus_number) */
 
-        temp8 = (u8) (linked_list->data.address16.resource_type & 0x03);
-        *buffer = temp8;
+        *buffer = (u8) (linked_list->data.address16.resource_type & 0x03);
         buffer += 1;
 
         /* Set the general flags */
 
-        temp8 = (u8) (linked_list->data.address16.producer_consumer & 0x01);
-
-        temp8 |= (linked_list->data.address16.decode & 0x01) << 1;
-        temp8 |= (linked_list->data.address16.min_address_fixed & 0x01) << 2;
-        temp8 |= (linked_list->data.address16.max_address_fixed & 0x01) << 3;
-
-        *buffer = temp8;
+        *buffer = acpi_rs_encode_general_flags(&linked_list->data);
         buffer += 1;
 
         /* Set the type specific flags */
 
-        temp8 = 0;
-
-        if (ACPI_MEMORY_RANGE == linked_list->data.address16.resource_type) {
-                temp8 = (u8)
-                    (linked_list->data.address16.attribute.memory.
-                     read_write_attribute & 0x01);
-
-                temp8 |=
-                    (linked_list->data.address16.attribute.memory.
-                     cache_attribute & 0x03) << 1;
-        } else if (ACPI_IO_RANGE == linked_list->data.address16.resource_type) {
-                temp8 = (u8)
-                    (linked_list->data.address16.attribute.io.range_attribute &
-                     0x03);
-                temp8 |=
-                    (linked_list->data.address16.attribute.io.
-                     translation_attribute & 0x03) << 4;
-        }
-
-        *buffer = temp8;
+        *buffer = acpi_rs_encode_specific_flags(&linked_list->data);
         buffer += 1;
 
         /* Set the address space granularity */
@@ -368,22 +478,19 @@ acpi_rs_address16_stream(struct acpi_resource *linked_list,
 
         /* Resource Source Index and Resource Source are optional */
 
-        if (0 != linked_list->data.address16.resource_source.string_length) {
-                temp8 = (u8) linked_list->data.address16.resource_source.index;
-
-                *buffer = temp8;
+        if (linked_list->data.address16.resource_source.string_length) {
+                *buffer =
+                    (u8) linked_list->data.address16.resource_source.index;
                 buffer += 1;
 
-                temp_pointer = (char *)buffer;
-
-                /* Copy the string */
+                /* Copy the resource_source string */
 
-                ACPI_STRCPY(temp_pointer,
+                ACPI_STRCPY((char *)buffer,
                             linked_list->data.address16.resource_source.
                             string_ptr);
 
                 /*
-                 * Buffer needs to be set to the length of the sting + one for the
+                 * Buffer needs to be set to the length of the string + one for the
                  * terminating null
                  */
                 buffer +=
@@ -432,20 +539,18 @@ acpi_rs_address32_resource(u8 * byte_stream_buffer,
                            acpi_size * bytes_consumed,
                            u8 ** output_buffer, acpi_size * structure_size)
 {
-        u8 *buffer;
-        struct acpi_resource *output_struct = (void *)*output_buffer;
         u16 temp16;
         u8 temp8;
         u8 *temp_ptr;
-        acpi_size struct_size;
         u32 index;
+        u8 *buffer = byte_stream_buffer;
+        struct acpi_resource *output_struct = (void *)*output_buffer;
+        acpi_size struct_size =
+            ACPI_SIZEOF_RESOURCE(struct acpi_resource_address32);
 
         ACPI_FUNCTION_TRACE("rs_address32_resource");
 
-        buffer = byte_stream_buffer;
-        struct_size = ACPI_SIZEOF_RESOURCE(struct acpi_resource_address32);
-
-        /* Point past the Descriptor to get the number of bytes consumed */
+        /* Get the Descriptor Length field */
 
         buffer += 1;
         ACPI_MOVE_16_TO_16(&temp16, buffer);
@@ -475,47 +580,12 @@ acpi_rs_address32_resource(u8 * byte_stream_buffer,
         /* Get the General Flags (Byte4) */
 
         buffer += 1;
-        temp8 = *buffer;
-
-        /* Producer / Consumer */
-
-        output_struct->data.address32.producer_consumer = temp8 & 0x01;
-
-        /* Decode */
-
-        output_struct->data.address32.decode = (temp8 >> 1) & 0x01;
-
-        /* Min Address Fixed */
-
-        output_struct->data.address32.min_address_fixed = (temp8 >> 2) & 0x01;
-
-        /* Max Address Fixed */
-
-        output_struct->data.address32.max_address_fixed = (temp8 >> 3) & 0x01;
+        acpi_rs_decode_general_flags(&output_struct->data, *buffer);
 
         /* Get the Type Specific Flags (Byte5) */
 
         buffer += 1;
-        temp8 = *buffer;
-
-        if (ACPI_MEMORY_RANGE == output_struct->data.address32.resource_type) {
-                output_struct->data.address32.attribute.memory.
-                    read_write_attribute = (u16) (temp8 & 0x01);
-
-                output_struct->data.address32.attribute.memory.cache_attribute =
-                    (u16) ((temp8 >> 1) & 0x03);
-        } else {
-                if (ACPI_IO_RANGE ==
-                    output_struct->data.address32.resource_type) {
-                        output_struct->data.address32.attribute.io.
-                            range_attribute = (u16) (temp8 & 0x03);
-                        output_struct->data.address32.attribute.io.
-                            translation_attribute = (u16) ((temp8 >> 4) & 0x03);
-                } else {
-                        /* BUS_NUMBER_RANGE == output_struct->Data.Address32.resource_type */
-                        /* Nothing needs to be filled in */
-                }
-        }
+        acpi_rs_decode_specific_flags(&output_struct->data, *buffer);
 
         /* Get Granularity (Bytes 6-9) */
 
@@ -561,9 +631,8 @@ acpi_rs_address32_resource(u8 * byte_stream_buffer,
         if (*bytes_consumed > (26 + 1)) {
                 /* Dereference the Index */
 
-                temp8 = *buffer;
                 output_struct->data.address32.resource_source.index =
-                    (u32) temp8;
+                    (u32) * buffer;
 
                 /* Point to the String */
 
@@ -577,20 +646,20 @@ acpi_rs_address32_resource(u8 * byte_stream_buffer,
                 temp_ptr = (u8 *)
                     output_struct->data.address32.resource_source.string_ptr;
 
-                /* Copy the string into the buffer */
+                /* Copy the resource_source string into the buffer */
 
                 index = 0;
-                while (0x00 != *buffer) {
+                while (*buffer) {
                         *temp_ptr = *buffer;
 
-                        temp_ptr += 1;
-                        buffer += 1;
-                        index += 1;
+                        temp_ptr++;
+                        buffer++;
+                        index++;
                 }
 
-                /* Add the terminating null */
+                /* Add the terminating null and set the string length */
 
-                *temp_ptr = 0x00;
+                *temp_ptr = 0;
                 output_struct->data.address32.resource_source.string_length =
                     index + 1;
 
@@ -602,7 +671,7 @@ acpi_rs_address32_resource(u8 * byte_stream_buffer,
                 temp8 = (u8) (index + 1);
                 struct_size += ACPI_ROUND_UP_to_32_bITS(temp8);
         } else {
-                output_struct->data.address32.resource_source.index = 0x00;
+                output_struct->data.address32.resource_source.index = 0;
                 output_struct->data.address32.resource_source.string_length = 0;
                 output_struct->data.address32.resource_source.string_ptr = NULL;
         }
@@ -639,62 +708,34 @@ acpi_rs_address32_stream(struct acpi_resource *linked_list,
 {
         u8 *buffer;
         u16 *length_field;
-        u8 temp8;
-        char *temp_pointer;
 
         ACPI_FUNCTION_TRACE("rs_address32_stream");
 
         buffer = *output_buffer;
 
-        /* The descriptor field is static */
+        /* Set the Descriptor Type field */
 
-        *buffer = 0x87;
+        *buffer = ACPI_RDESC_TYPE_DWORD_ADDRESS_SPACE;
         buffer += 1;
 
-        /* Set a pointer to the Length field - to be filled in later */
+        /* Save a pointer to the Length field - to be filled in later */
 
         length_field = ACPI_CAST_PTR(u16, buffer);
         buffer += 2;
 
         /* Set the Resource Type (Memory, Io, bus_number) */
 
-        temp8 = (u8) (linked_list->data.address32.resource_type & 0x03);
-
-        *buffer = temp8;
+        *buffer = (u8) (linked_list->data.address32.resource_type & 0x03);
         buffer += 1;
 
         /* Set the general flags */
 
-        temp8 = (u8) (linked_list->data.address32.producer_consumer & 0x01);
-        temp8 |= (linked_list->data.address32.decode & 0x01) << 1;
-        temp8 |= (linked_list->data.address32.min_address_fixed & 0x01) << 2;
-        temp8 |= (linked_list->data.address32.max_address_fixed & 0x01) << 3;
-
-        *buffer = temp8;
+        *buffer = acpi_rs_encode_general_flags(&linked_list->data);
         buffer += 1;
 
         /* Set the type specific flags */
 
-        temp8 = 0;
-
-        if (ACPI_MEMORY_RANGE == linked_list->data.address32.resource_type) {
-                temp8 = (u8)
-                    (linked_list->data.address32.attribute.memory.
-                     read_write_attribute & 0x01);
-
-                temp8 |=
-                    (linked_list->data.address32.attribute.memory.
-                     cache_attribute & 0x03) << 1;
-        } else if (ACPI_IO_RANGE == linked_list->data.address32.resource_type) {
-                temp8 = (u8)
-                    (linked_list->data.address32.attribute.io.range_attribute &
-                     0x03);
-                temp8 |=
-                    (linked_list->data.address32.attribute.io.
-                     translation_attribute & 0x03) << 4;
-        }
-
-        *buffer = temp8;
+        *buffer = acpi_rs_encode_specific_flags(&linked_list->data);
         buffer += 1;
 
         /* Set the address space granularity */
@@ -728,22 +769,19 @@ acpi_rs_address32_stream(struct acpi_resource *linked_list,
 
         /* Resource Source Index and Resource Source are optional */
 
-        if (0 != linked_list->data.address32.resource_source.string_length) {
-                temp8 = (u8) linked_list->data.address32.resource_source.index;
-
-                *buffer = temp8;
+        if (linked_list->data.address32.resource_source.string_length) {
+                *buffer =
+                    (u8) linked_list->data.address32.resource_source.index;
                 buffer += 1;
 
-                temp_pointer = (char *)buffer;
-
-                /* Copy the string */
+                /* Copy the resource_source string */
 
-                ACPI_STRCPY(temp_pointer,
+                ACPI_STRCPY((char *)buffer,
                             linked_list->data.address32.resource_source.
                             string_ptr);
 
                 /*
-                 * Buffer needs to be set to the length of the sting + one for the
+                 * Buffer needs to be set to the length of the string + one for the
                  *  terminating null
                  */
                 buffer +=
@@ -758,7 +796,7 @@ acpi_rs_address32_stream(struct acpi_resource *linked_list,
 
         /*
          * Set the length field to the number of bytes consumed
-         *  minus the header size (3 bytes)
+         * minus the header size (3 bytes)
          */
         *length_field = (u16) (*bytes_consumed - 3);
         return_ACPI_STATUS(AE_OK);
@@ -790,22 +828,23 @@ acpi_rs_address64_resource(u8 * byte_stream_buffer,
                            acpi_size * bytes_consumed,
                            u8 ** output_buffer, acpi_size * structure_size)
 {
-        u8 *buffer;
-        struct acpi_resource *output_struct = (void *)*output_buffer;
         u16 temp16;
         u8 temp8;
         u8 resource_type;
         u8 *temp_ptr;
-        acpi_size struct_size;
         u32 index;
+        u8 *buffer = byte_stream_buffer;
+        struct acpi_resource *output_struct = (void *)*output_buffer;
+        acpi_size struct_size =
+            ACPI_SIZEOF_RESOURCE(struct acpi_resource_address64);
 
         ACPI_FUNCTION_TRACE("rs_address64_resource");
 
-        buffer = byte_stream_buffer;
-        struct_size = ACPI_SIZEOF_RESOURCE(struct acpi_resource_address64);
+        /* Get the Descriptor Type */
+
         resource_type = *buffer;
 
-        /* Point past the Descriptor to get the number of bytes consumed */
+        /* Get the Descriptor Length field */
 
         buffer += 1;
         ACPI_MOVE_16_TO_16(&temp16, buffer);
@@ -835,47 +874,12 @@ acpi_rs_address64_resource(u8 * byte_stream_buffer,
         /* Get the General Flags (Byte4) */
 
         buffer += 1;
-        temp8 = *buffer;
-
-        /* Producer / Consumer */
-
-        output_struct->data.address64.producer_consumer = temp8 & 0x01;
-
-        /* Decode */
-
-        output_struct->data.address64.decode = (temp8 >> 1) & 0x01;
-
-        /* Min Address Fixed */
-
-        output_struct->data.address64.min_address_fixed = (temp8 >> 2) & 0x01;
-
-        /* Max Address Fixed */
-
-        output_struct->data.address64.max_address_fixed = (temp8 >> 3) & 0x01;
+        acpi_rs_decode_general_flags(&output_struct->data, *buffer);
 
         /* Get the Type Specific Flags (Byte5) */
 
         buffer += 1;
-        temp8 = *buffer;
-
-        if (ACPI_MEMORY_RANGE == output_struct->data.address64.resource_type) {
-                output_struct->data.address64.attribute.memory.
-                    read_write_attribute = (u16) (temp8 & 0x01);
-
-                output_struct->data.address64.attribute.memory.cache_attribute =
-                    (u16) ((temp8 >> 1) & 0x03);
-        } else {
-                if (ACPI_IO_RANGE ==
-                    output_struct->data.address64.resource_type) {
-                        output_struct->data.address64.attribute.io.
-                            range_attribute = (u16) (temp8 & 0x03);
-                        output_struct->data.address64.attribute.io.
-                            translation_attribute = (u16) ((temp8 >> 4) & 0x03);
-                } else {
-                        /* BUS_NUMBER_RANGE == output_struct->Data.Address64.resource_type */
-                        /* Nothing needs to be filled in */
-                }
-        }
+        acpi_rs_decode_specific_flags(&output_struct->data, *buffer);
 
         if (resource_type == ACPI_RDESC_TYPE_EXTENDED_ADDRESS_SPACE) {
                 /* Move past revision_id and Reserved byte */
@@ -912,7 +916,7 @@ acpi_rs_address64_resource(u8 * byte_stream_buffer,
         ACPI_MOVE_64_TO_64(&output_struct->data.address64.address_length,
                            buffer);
 
-        output_struct->data.address64.resource_source.index = 0x00;
+        output_struct->data.address64.resource_source.index = 0;
         output_struct->data.address64.resource_source.string_length = 0;
         output_struct->data.address64.resource_source.string_ptr = NULL;
 
@@ -942,9 +946,8 @@ acpi_rs_address64_resource(u8 * byte_stream_buffer,
                 if (*bytes_consumed > (46 + 1)) {
                         /* Dereference the Index */
 
-                        temp8 = *buffer;
                         output_struct->data.address64.resource_source.index =
-                            (u32) temp8;
+                            (u32) * buffer;
 
                         /* Point to the String */
 
@@ -960,21 +963,21 @@ acpi_rs_address64_resource(u8 * byte_stream_buffer,
                             output_struct->data.address64.resource_source.
                             string_ptr;
 
-                        /* Copy the string into the buffer */
+                        /* Copy the resource_source string into the buffer */
 
                         index = 0;
-                        while (0x00 != *buffer) {
+                        while (*buffer) {
                                 *temp_ptr = *buffer;
 
-                                temp_ptr += 1;
-                                buffer += 1;
-                                index += 1;
+                                temp_ptr++;
+                                buffer++;
+                                index++;
                         }
 
                         /*
-                         * Add the terminating null
+                         * Add the terminating null and set the string length
                          */
-                        *temp_ptr = 0x00;
+                        *temp_ptr = 0;
                         output_struct->data.address64.resource_source.
                             string_length = index + 1;
 
@@ -1020,62 +1023,34 @@ acpi_rs_address64_stream(struct acpi_resource *linked_list,
 {
         u8 *buffer;
         u16 *length_field;
-        u8 temp8;
-        char *temp_pointer;
 
         ACPI_FUNCTION_TRACE("rs_address64_stream");
 
         buffer = *output_buffer;
 
-        /* The descriptor field is static */
+        /* Set the Descriptor Type field */
 
-        *buffer = 0x8A;
+        *buffer = ACPI_RDESC_TYPE_QWORD_ADDRESS_SPACE;
         buffer += 1;
 
-        /* Set a pointer to the Length field - to be filled in later */
+        /* Save a pointer to the Length field - to be filled in later */
 
         length_field = ACPI_CAST_PTR(u16, buffer);
         buffer += 2;
 
         /* Set the Resource Type (Memory, Io, bus_number) */
 
-        temp8 = (u8) (linked_list->data.address64.resource_type & 0x03);
-
-        *buffer = temp8;
+        *buffer = (u8) (linked_list->data.address64.resource_type & 0x03);
         buffer += 1;
 
         /* Set the general flags */
 
-        temp8 = (u8) (linked_list->data.address64.producer_consumer & 0x01);
-        temp8 |= (linked_list->data.address64.decode & 0x01) << 1;
-        temp8 |= (linked_list->data.address64.min_address_fixed & 0x01) << 2;
-        temp8 |= (linked_list->data.address64.max_address_fixed & 0x01) << 3;
-
-        *buffer = temp8;
+        *buffer = acpi_rs_encode_general_flags(&linked_list->data);
         buffer += 1;
 
         /* Set the type specific flags */
 
-        temp8 = 0;
-
-        if (ACPI_MEMORY_RANGE == linked_list->data.address64.resource_type) {
-                temp8 = (u8)
-                    (linked_list->data.address64.attribute.memory.
-                     read_write_attribute & 0x01);
-
-                temp8 |=
-                    (linked_list->data.address64.attribute.memory.
-                     cache_attribute & 0x03) << 1;
-        } else if (ACPI_IO_RANGE == linked_list->data.address64.resource_type) {
-                temp8 = (u8)
-                    (linked_list->data.address64.attribute.io.range_attribute &
-                     0x03);
-                temp8 |=
-                    (linked_list->data.address64.attribute.io.range_attribute &
-                     0x03) << 4;
-        }
-
-        *buffer = temp8;
+        *buffer = acpi_rs_encode_specific_flags(&linked_list->data);
         buffer += 1;
 
         /* Set the address space granularity */
@@ -1109,22 +1084,19 @@ acpi_rs_address64_stream(struct acpi_resource *linked_list,
 
         /* Resource Source Index and Resource Source are optional */
 
-        if (0 != linked_list->data.address64.resource_source.string_length) {
-                temp8 = (u8) linked_list->data.address64.resource_source.index;
-
-                *buffer = temp8;
+        if (linked_list->data.address64.resource_source.string_length) {
+                *buffer =
+                    (u8) linked_list->data.address64.resource_source.index;
                 buffer += 1;
 
-                temp_pointer = (char *)buffer;
-
-                /* Copy the string */
+                /* Copy the resource_source string */
 
-                ACPI_STRCPY(temp_pointer,
+                ACPI_STRCPY((char *)buffer,
                             linked_list->data.address64.resource_source.
                             string_ptr);
 
                 /*
-                 * Buffer needs to be set to the length of the sting + one for the
+                 * Buffer needs to be set to the length of the string + one for the
                  * terminating null
                  */
                 buffer +=
diff --git a/drivers/acpi/resources/rsirq.c b/drivers/acpi/resources/rsirq.c
index 7179b6243f5b..56043fee96cb 100644
--- a/drivers/acpi/resources/rsirq.c
+++ b/drivers/acpi/resources/rsirq.c
@@ -290,7 +290,7 @@ acpi_rs_extended_irq_resource(u8 * byte_stream_buffer,
 
         ACPI_FUNCTION_TRACE("rs_extended_irq_resource");
 
-        /* Point past the Descriptor to get the number of bytes consumed */
+        /* Get the Descriptor Length field */
 
         buffer += 1;
         ACPI_MOVE_16_TO_16(&temp16, buffer);
@@ -398,7 +398,7 @@ acpi_rs_extended_irq_resource(u8 * byte_stream_buffer,
                 /* Copy the string into the buffer */
 
                 index = 0;
-                while (0x00 != *buffer) {
+                while (*buffer) {
                         *temp_ptr = *buffer;
 
                         temp_ptr += 1;
@@ -408,7 +408,7 @@ acpi_rs_extended_irq_resource(u8 * byte_stream_buffer,
 
                 /* Add the terminating null */
 
-                *temp_ptr = 0x00;
+                *temp_ptr = 0;
                 output_struct->data.extended_irq.resource_source.string_length =
                     index + 1;
 
@@ -420,7 +420,7 @@ acpi_rs_extended_irq_resource(u8 * byte_stream_buffer,
                 temp8 = (u8) (index + 1);
                 struct_size += ACPI_ROUND_UP_to_32_bITS(temp8);
         } else {
-                output_struct->data.extended_irq.resource_source.index = 0x00;
+                output_struct->data.extended_irq.resource_source.index = 0;
                 output_struct->data.extended_irq.resource_source.string_length =
                     0;
                 output_struct->data.extended_irq.resource_source.string_ptr =
@@ -461,16 +461,15 @@ acpi_rs_extended_irq_stream(struct acpi_resource *linked_list,
         u16 *length_field;
         u8 temp8 = 0;
         u8 index;
-        char *temp_pointer = NULL;
 
         ACPI_FUNCTION_TRACE("rs_extended_irq_stream");
 
-        /* The descriptor field is static */
+        /* Set the Descriptor Type field */
 
-        *buffer = 0x89;
+        *buffer = ACPI_RDESC_TYPE_EXTENDED_XRUPT;
         buffer += 1;
 
-        /* Set a pointer to the Length field - to be filled in later */
+        /* Save a pointer to the Length field - to be filled in later */
 
         length_field = ACPI_CAST_PTR(u16, buffer);
         buffer += 2;
@@ -524,16 +523,14 @@ acpi_rs_extended_irq_stream(struct acpi_resource *linked_list,
                     (u8) linked_list->data.extended_irq.resource_source.index;
                 buffer += 1;
 
-                temp_pointer = (char *)buffer;
-
                 /* Copy the string */
 
-                ACPI_STRCPY(temp_pointer,
+                ACPI_STRCPY((char *)buffer,
                             linked_list->data.extended_irq.resource_source.
                             string_ptr);
 
                 /*
-                 * Buffer needs to be set to the length of the sting + one for the
+                 * Buffer needs to be set to the length of the string + one for the
                  * terminating null
                  */
                 buffer +=