From: Alessandro Zummo <alessandro.zummo@towertech.it>
Date: Fri, 28 Mar 2008 21:15:59 +0000 (-0700)
Subject: ixp4xx-beeper: add MODULE_ALIAS
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=589499c04b9929ce3de9a9cc591f8a24cf1ebc91;p=deliverable%2Flinux.git

ixp4xx-beeper: add MODULE_ALIAS

The following patch allows ixp4xx-beeper to be loaded by udev
automatically when compiled as a module with kernel versions 2.4.24 and
greater.

This patch is required because 43cc71eed1250755986da4c0f9898f9a635cb3bf
("platform: prefix MODALIAS with "platform:"") changed the modalias
string to have the extra prefix.

LKG7102D7:~# udevinfo -a -p /sys/devices/platform/ixp4xx-beeper.4

 looking at device '/devices/platform/ixp4xx-beeper.4':
   KERNEL=="ixp4xx-beeper.4"
   SUBSYSTEM=="platform"
   DRIVER==""
   ATTR{modalias}=="platform:ixp4xx-beeper"

udev therefore tries to modprobe platform:ixp4xx-beeper instead of
ixp4xx-beeper.

LKG7102D7:~# udevtest /sys/devices/platform/ixp4xx-beeper.4
...
import_uevent_var: import into environment: 'PHYSDEVBUS=platform'
import_uevent_var: import into environment: 'MODALIAS=platform:ixp4xx-beeper'
main: looking at device '/devices/platform/ixp4xx-beeper.4' from
subsystem 'platform'
wait_for_sysfs: file '/sys/devices/platform/ixp4xx-beeper.4/bus'
appeared after 0 loops
main: run: 'socket:/org/kernel/udev/monitor'
main: run: '/sbin/modprobe --use-blacklist platform:ixp4xx-beeper'

With this patch, depmod adds an alias line (see below) to
modules.alias which allows modprobe to load the right module.

alias platform:ixp4xx-beeper ixp4xx-beeper

Signed-off-by: Gordon Farquharson <gordonfarquharson@gmail.com>
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: David Brownell <david-b@pacbell.net>
Cc: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/drivers/input/misc/ixp4xx-beeper.c b/drivers/input/misc/ixp4xx-beeper.c
index d2ade7443b7d..798d84c44d03 100644
--- a/drivers/input/misc/ixp4xx-beeper.c
+++ b/drivers/input/misc/ixp4xx-beeper.c
@@ -25,6 +25,7 @@
 MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
 MODULE_DESCRIPTION("ixp4xx beeper driver");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:ixp4xx-beeper");
 
 static DEFINE_SPINLOCK(beep_lock);