[RESEND][RFC][PATCH] leds: fix oops race in led triggerregistration

[Vegard Nossum]

Hi,

I resubmit this, which was posted a month ago, with no responses from
the maintainer (and no recent fixes in this area either). I have not
tested it myself, but I am reasonably confident that this is an
obviously correct fix. I guess it would not hurt to exercise it as well.

Zdenek: Have recent kernels also been showing this behaviour? Did the
patch fix the problem for you? You said something about a new issue
showing up, do you think that was related to this patch?

Also, just one question (since I'm newbie at this): Is it dangerous to
register the &dev_attr_trigger device file before we put the device on
the list or initialize it completely? If so, the initialization should
probably be moved all to the top before the file is made public.


Vegard