ACPI: allow drivers to request both device and system notify events

System notify events (0x00-0x7f) are common across all device types
and should be handled in Linux/ACPI, not in drivers.  However, some
BIOSes use system notify events in device-specific ways that require
the driver to be involved.

This patch adds a ACPI_DRIVER_ALL_NOTIFY_EVENTS driver flag.  When a
driver sets this flag and supplies a .notify method, Linux/ACPI calls
the .notify method for ALL notify events on the device, not just the
device-specific (0x80-0xff) events.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index c34b11022908..84e35d5646a1 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -114,10 +114,13 @@ struct acpi_device_ops {
         acpi_op_notify notify;
 };
 
+#define ACPI_DRIVER_ALL_NOTIFY_EVENTS   0x1     /* system AND device events */
+
 struct acpi_driver {
         char name[80];
         char class[80];
         const struct acpi_device_id *ids; /* Supported Hardware IDs */
+        unsigned int flags;
         struct acpi_device_ops ops;
         struct device_driver drv;
         struct module *owner;