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@xxxxxxxxx> Cc: Carlos Corbacho <carlos@xxxxxxxxxxxxxxxxxxx> Cc: Matthew Garrett <mjg@xxxxxxxxxx> Cc: Dmitry Torokhov <dtor@xxxxxxx> Cc: Corentin Chary <corentincj@xxxxxxxxxx> Cc: Thomas Renninger <trenn@xxxxxxx> Signed-off-by: Lee, Chun-Yi <jlee@xxxxxxxxxx> --- drivers/platform/x86/acer-wmi.c | 9 ++++++--- 1 files changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c index 6c4716d..73a7b63 100644 --- a/drivers/platform/x86/acer-wmi.c +++ b/drivers/platform/x86/acer-wmi.c @@ -737,7 +737,8 @@ 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; @@ -866,7 +867,8 @@ 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); @@ -1509,7 +1511,8 @@ 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); } -- 1.6.0.2 -- To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
