On Thu, May 02, 2019 at 02:38:11AM +0300, Dmitry Osipenko wrote: > Move hardware configuration to governor's start/resume methods. > This allows to re-initialize hardware counters and reconfigure > cleanly if governor was stopped/paused. That is needed because we > are not aware of all hardware changes that happened while governor > was stopped and the paused state may get out of sync with reality, > hence it's better to start with a clean slate after the pause. In > a result there is no memory bandwidth starvation after resume from > suspend-to-ram that results in display controller underflowing that > happens on resume because of improper decision made by devfreq about > the required memory frequency. This change also cleans up code a tad > by moving hardware-configuration code into a single location. > > Reviewed-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx> > Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx> > --- > drivers/devfreq/tegra-devfreq.c | 98 ++++++++++++++------------------- > 1 file changed, 40 insertions(+), 58 deletions(-) Acked-by: Thierry Reding <treding@xxxxxxxxxx>
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