commit d2478521afc20227658a10a8c5c2bf1a2aa615b3
author Corey Minyard <minyard@acm.org> Thu Feb 10 16:08:38 2011 -0600
committer Linus Torvalds <torvalds@linux-foundation.org> Thu Feb 10 18:00:21 2011 -0800
tree 4131c840f6a01061a3dd65264ed2497178960df8
parent ee24aebffb75a7f940cf52c8cf6910947b3130c0

char/ipmi: fix OOPS caused by pnp_unregister_driver on unregistered driver

This patch fixes an OOPS triggered when calling modprobe ipmi_si a
second time after the first modprobe returned without finding any ipmi
devices.  This can happen if you reload the module after having the
first module load fail.  The driver was not deregistering from PNP in
that case.

Peter Huewe originally reported this patch and supplied a fix, I have a
different patch based on Linus' suggestion that cleans things up a bit
more.

Cc: stable@kernel.org
Cc: openipmi-developer@lists.sourceforge.net
Reviewed-by: Peter Huewe <peterhuewe@gmx.de>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>