lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ACPI: Use ACPICA native way to decode the PLD buffer

Browse Source 
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>
This commit is contained in:
Feng Tang
2012-08-21 09:56:58 +08:00
committed by Len Brown
parent 7560452c1a
commit 8ede06aba5
2 changed files with 8 additions and 34 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/acpi/utils.c
View File

@@ -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;