acpi_enable_wakeup_device question

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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