ACPI: autoload modules - Create ACPI alias interface

Modify modpost (file2alias.c) to add acpi*:XYZ0001: alias in modules.alias
like:
grep acpi /lib/modules/2.6.22-rc4-default/modules.alias
alias acpi*:SNY5001:* sony_laptop
alias acpi*:SNY6001:* sony_laptop
for e.g. the sony_laptop module.
This module matches against all ACPI devices with a HID or CID of SNY5001
or SNY6001

Export an uevent and modalias sysfs file containing the string:
[MODALIAS=]acpi:PNP0C0C:
additional CIDs are concatenated at the end.

Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Len Brown <len.brown@intel.com>

2 files changed, 7 insertions, 0 deletions

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index d5680cd7746a..bf5e0009de75 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -33,6 +33,7 @@
 #endif
 
 #include <linux/list.h>
+#include <linux/mod_devicetable.h>
 
 #include <acpi/acpi.h>
 #include <acpi/acpi_bus.h>
diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index af04a555b52c..2ada8ee316b3 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -159,6 +159,12 @@ struct ap_device_id {
 
 #define AP_DEVICE_ID_MATCH_DEVICE_TYPE          0x01
 
+#define ACPI_ID_LEN     9
+
+struct acpi_device_id {
+        __u8 id[ACPI_ID_LEN];
+        kernel_ulong_t driver_data;
+};
 
 #define PNP_ID_LEN      8
 #define PNP_MAX_DEVICES 8