From mboxrd@z Thu Jan  1 00:00:00 1970
From: Yiliang Bao <yiliangb@gmail.com>
Subject: How to unload a sound module.
Date: Tue, 26 Jan 2010 11:37:07 -0800
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Hi,

I am new to alsa driver development. The first problem I encountered is I
could not unload a module just inserted. I always get the following message
(using snd-dummy as an example).

> sudo rmmod snd-dummy
ERROR: Module snd_dummy is in use

I checked who is using snd-dummy. Here is what I got and I do not know what
applications are using it.

Module                  Size  Used by
snd_dummy               9600  2

Is there any easy way to unload the sound module?

Thanks,
Yiliang