[PATCH v5 4/7] drm: sun4i: dsi: Add mode_set function

Jagan Teki jagan at amarulasolutions.com
Mon Nov 22 14:31:47 UTC 2021


On Mon, Nov 22, 2021 at 7:39 PM Maxime Ripard <maxime at cerno.tech> wrote:
>
> On Mon, Nov 22, 2021 at 07:21:57PM +0530, Jagan Teki wrote:
> > > It's perfectly valid to dereference the pointer in atomic_enable, and
> > > that patch would consume memory for no particular reason.
> >
> > Again, I'm not pointing any mistake in dereference and certainly not
> > understand about what memory consumption issue here.
>
> You add a struct drm_display_mode field to struct sun6i_dsi. It
> increases the size of struct sun6i_dsi of sizeof(struct
> drm_display_mode).
>
> > I'm doing it here since I'm doing it via mode_set in other drivers. No
> > problem for me either way.
>
> But *why* are you doing so?
>
> There might be a valid reason in other drivers, but there's none here
> (that you mentioned at least).

The reason is to use existing bridge function instead of dereference
ie what I've mentioned. I don't have any other reasons.

Jagan.


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