From: Gordon Farquharson <gordonfarquharson@gmail.com>
Date: Wed, 26 Mar 2008 03:57:49 +0000 (+0100)
Subject: [ARM] 4875/1: Add MODULE_ALIAS to ixp4xx-beeper module
X-Git-Tag: v2.6.25-rc8~6^2
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=1035d60d92325bddcc4248df5a27dcd5698f5931;p=linux-2.6-omap-h63xx.git

[ARM] 4875/1: Add MODULE_ALIAS to ixp4xx-beeper module

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 commit
43cc71eed1250755986da4c0f9898f9a635cb3bf adds "platform:" to the
modalias string.

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.

modules.alias:
alias platform:ixp4xx-beeper ixp4xx-beeper

Signed-off-by: Gordon Farquharson <gordonfarquharson@gmail.com>
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/drivers/input/misc/ixp4xx-beeper.c b/drivers/input/misc/ixp4xx-beeper.c
index d2ade7443b7..798d84c44d0 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);