[RFC 1/1] clk: Add notifier support in clk_prepare_enable/clk_disable_unprepare

[Russell King - ARM Linux]

On Tue, Mar 12, 2013 at 10:42:30PM -0600, Stephen Warren wrote:
> I believe the point Russell is making is not that the idea behind this
> patch is wrong, but simply that the function where you put the hooks is
> wrong. The hooks should at least be in clk_enable/clk_disable and not

Indeed, remembering that clk_enable/clk_disable can be called from
atomic contexts.

If the hook needs to be non-atomic (iow, it can schedule) then it can't
go into clk_enable/clk_disable, and must go into clk_prepare/clk_unprepare,
which is the schedulable half of that API.