On Thu, Jul 19, 2012 at 09:43:21AM +0800, Alex Hung wrote:
> +static struct acpi_device *wmi_device;
If a machine exports multiple WMI interfaces then having a static
acpi_device doesn't make sense here. Instead we probably need the API to
take some sort of token (maybe just the wmi_device itself as an opaque
blob) back to the calling driver and then have it use that whenever it
makes a wmi call. There'd be some fixing up involved, but it should be
mostly mechanical.
> /*
> * GUID parsing functions
> */
> @@ -652,8 +654,9 @@ acpi_status wmi_get_event_data(u32 event, struct acpi_buffer *out)
>
> list_for_each(p, &wmi_block_list) {
> wblock = list_entry(p, struct wmi_block, list);
> + if (wmi_device != NULL && wmi_device->handle != wblock->handle)
> + continue;
> gblock = &wblock->gblock;
> -
> if ((gblock->flags & ACPI_WMI_EVENT) &&
> (gblock->notify_id == event))
> return acpi_evaluate_object(wblock->handle, "_WED",
> @@ -900,6 +903,10 @@ static void acpi_wmi_notify(struct acpi_device *device, u32 event)
> wblock = list_entry(p, struct wmi_block, list);
> block = &wblock->gblock;
>
> + if (device->handle != wblock->handle)
> + continue;
> + wmi_device = device;
> +
> if ((block->flags & ACPI_WMI_EVENT) &&
> (block->notify_id == event)) {
> if (wblock->handler)
> --
> 1.7.9.5
>
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--
Matthew Garrett | mjg59@xxxxxxxxxxxxx
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