[PATCH] ARM: mvebu: Fix of_clk_get() call in a non sleeping context
Russell King - ARM Linux
linux at arm.linux.org.uk
Tue Mar 8 12:55:04 PST 2016
On Tue, Mar 08, 2016 at 05:51:47PM +0100, Thomas Petazzoni wrote:
> Hello,
>
> On Tue, 08 Mar 2016 17:38:11 +0100, Gregory CLEMENT wrote:
>
> > And from clk_enable comment we have:
> > ""
> > clk_enable must not sleep, which differentiates it from clk_prepare. In a
> > simple case, clk_enable can be used instead of clk_prepare to ungate a clk
> > if the operation will never sleep.
> > ""
> >
> > Moreoever for me the "must" was to insist to the order of the call no to
> > the fact that both must be called.
>
> Right make sense, thanks for correcting me on this. If that's OK from a
> clock maintainer point of view, I'm fine.
The comment Gregory quoted is an _implementation_ comment: it's saying
that you can implement the gating/ungating in either clk_prepare() or
clk_enable().
It isn't giving permission for users of the clk API to omit these calls.
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