Locking in the clk API
u.kleine-koenig at pengutronix.de
Sat Jan 15 10:03:31 EST 2011
On Sat, Jan 15, 2011 at 02:53:58PM +0000, Russell King - ARM Linux wrote:
> We've been around returning EAGAIN, WARN_ONs, BUG_ONs, having clk_enable()
> vs clk_enable_atomic(), clk_enable_cansleep() vs clk_enable(), etc.
> There's been a lot of talk on this issue for ages with no real progress
> that I'm just going to repeat: let's unify those implementations which
> use a spinlock for their clks into one consolidated solution, and
> a separate consolidated solution for those which use a mutex.
> This will at least allow us to have _some_ consolidation of the existing
> implementations - and it doesn't add anything to the problem at hand.
> It might actually help identify what can be done at code level to resolve
> this issue.
Great, so how should we do it? Take Jeremy's patch and make the
differenciation between sleeping and atomic implementation a Kconfig
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