From 3989170f8e3c1bd71d8f7ec6e3d52e46815ee096 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Mon, 18 Oct 2010 08:43:13 +0800 Subject: ACPICA: Comment update; no functional change Add a usage note to InstallAddressSpaceHandler. Signed-off-by: Bob Moore Signed-off-by: Lin Ming Signed-off-by: Len Brown --- drivers/acpi/acpica/evxfregn.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers/acpi/acpica') diff --git a/drivers/acpi/acpica/evxfregn.c b/drivers/acpi/acpica/evxfregn.c index 541cbc1544d..ce9314f7945 100644 --- a/drivers/acpi/acpica/evxfregn.c +++ b/drivers/acpi/acpica/evxfregn.c @@ -64,6 +64,12 @@ ACPI_MODULE_NAME("evxfregn") * * DESCRIPTION: Install a handler for all op_regions of a given space_id. * + * NOTE: This function should only be called after acpi_enable_subsystem has + * been called. This is because any _REG methods associated with the Space ID + * are executed here, and these methods can only be safely executed after + * the default handlers have been installed and the hardware has been + * initialized (via acpi_enable_subsystem.) + * ******************************************************************************/ acpi_status acpi_install_address_space_handler(acpi_handle device, -- cgit v1.2.3-70-g09d2