Re: [PATCH 5/5] fbcon: Use fbcon_info_from_console() in fbcon_modechange_possible()

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Hi Helge,

On Wed, Jun 29, 2022 at 10:00 PM Helge Deller <deller@xxxxxx> wrote:
> Use the fbcon_info_from_console() wrapper which was added to kernel
> v5.19 with commit 409d6c95f9c6 ("fbcon: Introduce wrapper for console->fb_info lookup").
>
> Signed-off-by: Helge Deller <deller@xxxxxx>

Thanks for your patch!

I guess you kept this separate, to ease backporting?
This does mean that upstream will never really see if using
registered_fb[] directly may cause problems...

> --- a/drivers/video/fbdev/core/fbcon.c
> +++ b/drivers/video/fbdev/core/fbcon.c
> @@ -2752,7 +2752,7 @@ int fbcon_modechange_possible(struct fb_info *info, struct fb_var_screeninfo *va
>         for (i = first_fb_vc; i <= last_fb_vc; i++) {
>                 vc = vc_cons[i].d;
>                 if (!vc || vc->vc_mode != KD_TEXT ||
> -                          registered_fb[con2fb_map[i]] != info)
> +                          fbcon_info_from_console(i) != info)
>                         continue;
>
>                 if (vc->vc_font.width  > FBCON_SWAP(var->rotate, var->xres, var->yres) ||

Anyway, LGTM, so
Reviewed-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds



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