Re: [PATCH v5 01/20] drm/panel: panel-simple: Add missing pm_runtime_disable() calls

[Doug Anderson]

Hi,

On Thu, Apr 29, 2021 at 5:58 PM Linus Walleij <linus.walleij@xxxxxxxxxx> wrote:
>
> On Fri, Apr 23, 2021 at 6:59 PM Douglas Anderson <dianders@xxxxxxxxxxxx> wrote:
>
> > In commit 3235b0f20a0a ("drm/panel: panel-simple: Use runtime pm to
> > avoid excessive unprepare / prepare") we started using pm_runtime, but
> > my patch neglected to add the proper pm_runtime_disable(). Doh! Add
> > them now.
> >
> > Fixes: 3235b0f20a0a ("drm/panel: panel-simple: Use runtime pm to avoid excessive unprepare / prepare")
> > Reported-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
> > Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
>
> This patch as such:
> Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
>
> Notice however: you turn on pm runtime pm_runtime_enable()
> in panel_simple_probe() but are you ever turning it off in
> panel_simple_remove()?
>
> I think pm_runtime_disable(); need to be added there?

I'm a bit confused. You're saying that I need to add
pm_runtime_disable() to panel_simple_remove()? Doesn't this patch do
that? This patch adds two calls to pm_runtime_disable(). One of those
is in the probe error path and the other one is in
panel_simple_remove().

-Doug