[PATCH next] OF: convert devtree lock from rw_lock to raw spinlock

[David Miller]

From: Paul Gortmaker <paul.gortmaker at windriver.com>
Date: Mon,  4 Feb 2013 11:05:21 -0500

> From: Thomas Gleixner <tglx at linutronix.de>
> 
> With the locking cleanup in place (from "OF: Fixup resursive
> locking code paths"), we can now do the conversion from the
> rw_lock to a raw spinlock as required for preempt-rt.
> 
> The previous cleanup and the this conversion were originally
> separate since they predated when mainline got raw spinlock (in
> commit c2f21ce2e31286a "locking: Implement new raw_spinlock").
> 
> So, at that point in time, the cleanup was considered plausible
> for mainline, but not this conversion.  In any case, we've kept
> them separate as it makes for easier review and better bisection.
> 
> Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
> [PG: taken from preempt-rt, update subject & add a commit log]
> Signed-off-by: Paul Gortmaker <paul.gortmaker at windriver.com>

Acked-by: David S. Miller <davem at davemloft.net>