Re: [PATCH v3 4/9] drm/mipi-dsi: Reduce driver bloat of mipi_dsi_*_write_seq()

[Doug Anderson]

Hi,

On Thu, May 2, 2024 at 1:23 AM Linus Walleij <linus.walleij@xxxxxxxxxx> wrote:
>
> On Wed, May 1, 2024 at 5:43 PM Douglas Anderson <dianders@xxxxxxxxxxxx> wrote:
>
> > Through a cooperative effort between Hsin-Yi Wang and Dmitry
> > Baryshkov, we have realized the dev_err() in the
> > mipi_dsi_*_write_seq() macros was causing quite a bit of bloat to the
> > kernel. Let's hoist this call into drm_mipi_dsi.c by adding a "chatty"
> > version of the functions that includes the print. While doing this,
> > add a bit more comments to these macros making it clear that they
> > print errors and also that they return out of _the caller's_ function.
>
> This doesn't really explain why this takes so much less space.
>
> Please add some explanation like that "the macro gets inlined
> and thus the error report string gets inlined into every call to
> mipi_dsi_dcs_write_seq() and mipi_dsi_generic_write_seq(),
> by using a call to a "chatty" function, the usage is reduced to one
> string in the chatty function and a function call at the invoking
> site".
>
> With some explanation like that +/- added in:
> Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>

Sure. I'll plan on not sending out a v4 (unless I need to for some
other reason) and I can just add your wording in when applying. Yell
if you want me to do something different.

-Doug