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acer-wmi: allow 64-bits return buffer from WMI methods 

Acer WMID_GUID1/2 method's return buffer was declared to 64-bits
on some Acer notebook, but WMI method only use 32-bits in return
buffer.
So, add this patch for allow 64-bits return buffer.

Reference: bko#34142
	https://bugzilla.kernel.org/show_bug.cgi?id=34142

Tested on Acer Travelmate 5735Z-452G32Mnss

Tested-by: Melchior FRANZ <melchior.franz@gmail.com>
Cc: Carlos Corbacho <carlos@strangeworlds.co.uk>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Dmitry Torokhov <dtor@mail.ru>
Cc: Corentin Chary <corentincj@iksaif.net>
Cc: Thomas Renninger <trenn@suse.de>
Signed-off-by: Lee, Chun-Yi <jlee@novell.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
This commit is contained in:
Lee, Chun-Yi 2011-05-22 07:33:53 +08:00 committed by Matthew Garrett
parent a8d1a266ee
commit ab6a931620
1 changed files with 6 additions and 3 deletions
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9
drivers/platform/x86/acer-wmi.c
View File

@ -750,7 +750,8 @@ WMI_execute_u32(u32 method_id, u32 in, u32 *out)
obj = (union acpi_object *) result.pointer;
if (obj && obj->type == ACPI_TYPE_BUFFER &&
obj->buffer.length == sizeof(u32)) {
(obj->buffer.length == sizeof(u32) ||
obj->buffer.length == sizeof(u64))) {
tmp = *((u32 *) obj->buffer.pointer);
} else {
tmp = 0;
@ -879,7 +880,8 @@ static acpi_status WMID_set_capabilities(void)
obj = (union acpi_object *) out.pointer;
if (obj && obj->type == ACPI_TYPE_BUFFER &&
obj->buffer.length == sizeof(u32)) {
(obj->buffer.length == sizeof(u32) ||
obj->buffer.length == sizeof(u64))) {
devices = *((u32 *) obj->buffer.pointer);
} else {
kfree(out.pointer);
@ -1522,7 +1524,8 @@ static u32 get_wmid_devices(void)
obj = (union acpi_object *) out.pointer;
if (obj && obj->type == ACPI_TYPE_BUFFER &&
obj->buffer.length == sizeof(u32)) {
(obj->buffer.length == sizeof(u32) ||
obj->buffer.length == sizeof(u64))) {
devices = *((u32 *) obj->buffer.pointer);
}