02-20-2015
It may be possible, if you compile your USB controllers etc. drivers as modules. Then you could rmmod them and modprobe them to reload.
I know it's difficult to get a listing of a crash from the kernel after it's crashed, but it would be interesting to see it if you could manage a photograph.
Most USB controllers can't do this, I'm not surprised there are bugs or pitfalls. Perhaps there's something that needs to be done first, before you force it off.
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rmmod(8) System Manager's Manual rmmod(8)
NAME
rmmod -- simple program to remove a module from the Linux Kernel
SYNOPSIS
rmmod [-f] [-w] [-s] [-v] [modulename]
DESCRIPTION
rmmod is a trivial program to remove a module (when module unloading support is provided) from the kernel. Most users will want to use
modprobe(8) with the -r option instead.
OPTIONS
-v --verbose
Print messages about what the program is doing. Usually rmmod prints messages only if something goes wrong.
-f --force
This option can be extremely dangerous: it has no effect unless CONFIG_MODULE_FORCE_UNLOAD was set when the kernel was compiled.
With this option, you can remove modules which are being used, or which are not designed to be removed, or have been marked as
unsafe (see lsmod(8)).
-w --wait Normally, rmmod will refuse to unload modules which are in use. With this option, rmmod will isolate the module, and wait until
the module is no longer used. Nothing new will be able to use the module, but it's up to you to make sure the current users
eventually finish with it. See lsmod(8)) for information on usage counts.
-s --syslog
Send errors to syslog instead of standard error.
-V --version
Show version of program and exit.
COPYRIGHT
This manual page originally Copyright 2002, Rusty Russell, IBM Corporation. Maintained by Jon Masters and others.
SEE ALSO
modprobe(8), insmod(8), lsmod(8) modinfo(8)
rmmod(8)