tree 7f57194438afcfe364fc507b359840b65c63d203
parent e52eec13cd6b7f30ab19081b387813e03e592ae5
author Eric W. Biederman <ebiederm@aristanetworks.com> 1284489387 -0700
committer Greg Kroah-Hartman <gregkh@suse.de> 1287767803 -0700

uio: Fix lack of locking in init_uio_class

There is no locking in init_uio_class so multiple
drivers can race and create multiple uio classes.

Fix this by simplifying the code.   In particular always
register the uio class during module_init and make things
simpler.

Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Hans J. Koch <hjk@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>