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7.3.3.2. A kernel module is not loaded automatically, and Udev is not intended to load it
If the “wrapper” module only enhances the functionality provided by some other module (e.g., snd-pcm-oss enhances the functionality of snd-pcm by making the sound cards available to OSS applications), configure modprobe to load the wrapper after Udev loads the wrapped module. To do this, add a “softdep” line to the corresponding /etc/ modprobe.d/<filename>.conf file. For example:
softdep snd-pcm post: snd-pcm-oss
softdep snd-pcm post: snd-pcm-oss
Note that the “softdep” command also allows pre: dependencies, or a mixture of both pre: and post:. See the
modprobe.d(5) manual page for more information on “softdep” syntax and capabilities.
If the module in question is not a wrapper and is useful by itself, configure the modules bootscript to load this module on system boot. To do this, add the module name to the /etc/sysconfig/modules file on a separate line. This works for wrapper modules too, but is suboptimal in that case.