To find out what a particular driver/module does, the modinfo command can be used in many cases:
root@:~# modinfo -d i915
Intel Graphics
Intel Graphics
modinfo — program to show information about a Linux Kernel module
root@:~# modinfo -d soundcore
Core sound module
Core sound module
modinfo extracts information from the Linux Kernel modules given on the command line. If the module name is not a filename, then the /lib/modules/version directory is searched, as done by modprobe(8).
root@:~# modinfo -d ext3
Second Extended Filesystem with journaling extensions
Second Extended Filesystem with journaling extensions
To set parameters during module loads, you can add entries to /etc/modprobe.conf on RHEL or /etc/modprobe.conf.local on SLES.
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