[PATCH] drm/panel: simple: Initialize unprepared_time in probe

[Marek Vasut]

On 7/9/23 17:08, Sam Ravnborg wrote:
> Hi Marek.

Hi,

> On Sun, Jul 09, 2023 at 03:52:31PM +0200, Marek Vasut wrote:
>> The unprepared_time has to be initialized during probe to probe time
>> ktime, otherwise panel_simple_resume() panel_simple_wait() call may
>> wait too short time, or no time at all, which would violate the panel
>> timing specification. Initializing the unprepared_time() to probe time
>> ktime assures the delay is at least what the panel requires from the
>> time kernel started. The unprepared_time is then updated every time
>> the panel is suspended in panel_simple_suspend() too.
>>
>> Fixes: e5e30dfcf3db ("drm: panel: simple: Defer unprepare delay till next prepare to shorten it")
>> Signed-off-by: Marek Vasut <marex at denx.de>
> 
> Looks OK,
> 
> Reviewed-by: Sam Ravnborg <sam at ravnborg.org>
> 
> It looks like prepared_time is not used anymore.
> Could you dig a little into this while you are in the waiting area.

Good catch, seems that has been replaced by RPM so whatever is left is 
just a remnant and should be dropped . I can prepare a patch, but let's 
see if Douglas has any further comment on this.