Hi
While debugging another issue I noticed that McBSP2 clock on Nokia N900
doesn't get disabled in 3.0-rc2 after calling
pm_runtime_put_sync(mcbsp->dev) and the fclk usecount remains active if
the pm_runtime_get_sync(mcbsp->dev) was ever called activating it.
I believe this affects other drivers too as the system is not able to
enter into retention idle even if the mcbsp clocks are off.
I traced breakage to commit 638080c ("OMAP2+ / PM: move runtime
PM implementation to use device power domains").
Reventing that and and 2064af9 ("PM: Revert "driver core: platform_bus:
allow runtime override of dev_pm_ops") makes both mcbsp clocks and
retention idle working again.
Unfortunately I'm not able to see quickly what would be the right fix.
--
Jarkko
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