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authorFeng Tang <feng.tang@intel.com>2012-08-21 09:56:58 +0800
committerLen Brown <len.brown@intel.com>2012-09-21 00:31:33 -0400
commit8ede06aba5dffa78a27a18c47a9059eb38072ada (patch)
treefd88db5ccc5be67ea5998ff91187f0f1ff7a372e
parent7560452c1a4934049811fb6622fb753e8ad1c647 (diff)
ACPI: Use ACPICA native way to decode the PLD buffer
This patch is on top of the ACPICA 20120816 release, which implemented a native way to decode PLD buffer, so use it instead of leting upper level users do the decoding. v2: Modify the check for PLD buffer length to reject buffers whose length < 16 Signed-off-by: Feng Tang <feng.tang@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
-rw-r--r--drivers/acpi/utils.c11
-rw-r--r--include/acpi/acpi_bus.h31
2 files changed, 8 insertions, 34 deletions
diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
index 3e87c9c538a..462f7e30036 100644
--- a/drivers/acpi/utils.c
+++ b/drivers/acpi/utils.c
@@ -384,7 +384,7 @@ acpi_evaluate_reference(acpi_handle handle,
EXPORT_SYMBOL(acpi_evaluate_reference);
acpi_status
-acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld *pld)
+acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld)
{
acpi_status status;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
@@ -400,13 +400,16 @@ acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld *pld)
if (!output || output->type != ACPI_TYPE_PACKAGE
|| !output->package.count
|| output->package.elements[0].type != ACPI_TYPE_BUFFER
- || output->package.elements[0].buffer.length > sizeof(*pld)) {
+ || output->package.elements[0].buffer.length < ACPI_PLD_REV1_BUFFER_SIZE) {
status = AE_TYPE;
goto out;
}
- memcpy(pld, output->package.elements[0].buffer.pointer,
- output->package.elements[0].buffer.length);
+ status = acpi_decode_pld_buffer(
+ output->package.elements[0].buffer.pointer,
+ output->package.elements[0].buffer.length,
+ pld);
+
out:
kfree(buffer.pointer);
return status;
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index bde976ee068..0c1fcd4a2b4 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -54,37 +54,8 @@ acpi_status
acpi_evaluate_hotplug_ost(acpi_handle handle, u32 source_event,
u32 status_code, struct acpi_buffer *status_buf);
-struct acpi_pld {
- unsigned int revision:7; /* 0 */
- unsigned int ignore_colour:1; /* 7 */
- unsigned int colour:24; /* 8 */
- unsigned int width:16; /* 32 */
- unsigned int height:16; /* 48 */
- unsigned int user_visible:1; /* 64 */
- unsigned int dock:1; /* 65 */
- unsigned int lid:1; /* 66 */
- unsigned int panel:3; /* 67 */
- unsigned int vertical_pos:2; /* 70 */
- unsigned int horizontal_pos:2; /* 72 */
- unsigned int shape:4; /* 74 */
- unsigned int group_orientation:1; /* 78 */
- unsigned int group_token:8; /* 79 */
- unsigned int group_position:8; /* 87 */
- unsigned int bay:1; /* 95 */
- unsigned int ejectable:1; /* 96 */
- unsigned int ospm_eject_required:1; /* 97 */
- unsigned int cabinet_number:8; /* 98 */
- unsigned int card_cage_number:8; /* 106 */
- unsigned int reference:1; /* 114 */
- unsigned int rotation:4; /* 115 */
- unsigned int order:5; /* 119 */
- unsigned int reserved:4; /* 124 */
- unsigned int vertical_offset:16; /* 128 */
- unsigned int horizontal_offset:16; /* 144 */
-} __attribute__((__packed__));
-
acpi_status
-acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld *pld);
+acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld);
#ifdef CONFIG_ACPI
#include <linux/proc_fs.h>