linux-kernel - [PATCHES v2 1/2] Documentation: replace install commands with softdeps

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Date:	Sat, 17 Mar 2012 03:13:23 -0300
From:	Lucas De Marchi <lucas.demarchi@...fusion.mobi>
To:	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	kay.sievers@...y.org, rdunlap@...otime.net, perex@...ex.cz,
	tiwai@...e.de, davem@...emloft.net,
	Lucas De Marchi <lucas.demarchi@...fusion.mobi>
Subject: [PATCHES v2 1/2] Documentation: replace install commands with softdeps

Install commands should not be used to specify soft dependencies among
modules. When loading modules it's much better to have a softdep that
modprobe knows what's being done than having to fork/exec another
instance of modprobe to load the other module.

By using a softdep user has also an option to remove the dependencies
when removing the module (and if its refcount dropped to 0)

Signed-off-by: Lucas De Marchi <lucas.demarchi@...fusion.mobi>
---

v2: addressed comments from Takashi Iwai and split the patch in two. There were
some changes to install commands that are better placed in a separate patch


 Documentation/networking/bonding.txt    |    3 +--
 Documentation/sound/oss/AudioExcelDSP16 |    4 ++--
 Documentation/sound/oss/README.modules  |    2 +-
 3 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/Documentation/networking/bonding.txt b/Documentation/networking/bonding.txt
index 080ad26..2d38eee 100644
--- a/Documentation/networking/bonding.txt
+++ b/Documentation/networking/bonding.txt
@@ -1826,8 +1826,7 @@ an equivalent problem can occur.  In this case, the following can be
 added to modprobe.conf (or modprobe.conf.local, as appropriate), as
 follows (all on one line; it has been split here for clarity):
 
-install bonding /sbin/modprobe tg3; /sbin/modprobe e1000;
-	/sbin/modprobe --ignore-install bonding
+softdep bonding pre: tg3 e1000
 
 	This will, when loading the bonding module, rather than
 performing the normal action, instead execute the provided command.
diff --git a/Documentation/sound/oss/AudioExcelDSP16 b/Documentation/sound/oss/AudioExcelDSP16
index e0dc064..30cfccc 100644
--- a/Documentation/sound/oss/AudioExcelDSP16
+++ b/Documentation/sound/oss/AudioExcelDSP16
@@ -54,8 +54,8 @@ Loading MSS and OPL3 needs to pre load the aedsp16 module to set up correctly
 the sound card. Installation dependencies must be written in the modprobe.conf
 file:
 
-install ad1848 /sbin/modprobe aedsp16 && /sbin/modprobe -i ad1848
-install opl3 /sbin/modprobe aedsp16 && /sbin/modprobe -i opl3
+softdep ad1848 pre: aedsp16
+softdep opl3 pre: aedsp16
 
 Then you must load the sound modules stack in this order:
 sound -> aedsp16 -> [ ad1848, opl3 ]
diff --git a/Documentation/sound/oss/README.modules b/Documentation/sound/oss/README.modules
index e691d74..716615a 100644
--- a/Documentation/sound/oss/README.modules
+++ b/Documentation/sound/oss/README.modules
@@ -36,7 +36,7 @@ options adlib_card io=0x388     # FM synthesizer
  Alternatively, if you have compiled in kernel level ISAPnP support:
 
 alias char-major-14 sb
-post-install sb /sbin/modprobe "-k" "adlib_card"
+softdep sb post: adlib_card
 options adlib_card io=0x388
 
   The effect of this is that the sound driver and all necessary bits and
-- 
1.7.9.4

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