acpi_enable_wakeup_device question

[Dmitry Torokhov <dtor_core-yWtbtysYrB+LZ21kGMrzwg@public.gmane.org>]

Hi,

I see the following comment in drivers/acpi/sleeip/wakeup.c:

/**
 * acpi_enable_wakeup_device - enable wakeup devices
 *      @sleep_state:   ACPI state
 * Enable all wakup devices's GPE
 */
void
acpi_enable_wakeup_device(
        u8              sleep_state)
{
        struct list_head * node, * next;


        /*
         * Caution: this routine must be invoked when interrupt is disabled
         * Refer ACPI2.0: P212
         */

But I can not seem to find anything related to that on p.212 ACPI 2.0c.
As far as I can tell functions called by acpi_enable_wakeup_device (such
as acpi_set_gpe_type and acpi_enable_gpe) can be safely called from
process context. Why this function has to be called with interrupts
disabled?

Thanks!

-- 
Dmitry


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