Re: [PATCH 06/10] drm/exynos: Set fbdev flags

Javier Martinez Canillas
2023-07-05T08:50:26Z

Thomas Zimmermann <tzimmermann@suse.de> writes:

> Set fbdev default flags FBNFO_DEFAULT and mark the framebuffer with

FBINFO_DEFAULT, or did you meand FBINFO_FLAG_DEFAULT (the flag your patch
is actually using) ?

I just noticed that are the same... and in patch 04/10 you used the former
for the tegra driver, but here you are using the latter. Is on purpose or
just a mistake ?

> FBINFO_VIRTFB. The framebuffer range is in DMA-able memory and should
> be accessed with the CPU's regular memory ops.
>
> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
> Cc: Inki Dae <inki.dae@samsung.com>
> Cc: Seung-Woo Kim <sw0312.kim@samsung.com>
> Cc: Kyungmin Park <kyungmin.park@samsung.com>
> Cc: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> Cc: Alim Akhtar <alim.akhtar@samsung.com>
> ---
> drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
> index 7ca3424b59ce..28dc398d6e10 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
> @@ -72,6 +72,7 @@ static int exynos_drm_fbdev_update(struct drm_fb_helper *helper,
> return PTR_ERR(fbi);
> }
>
> + fbi->flags = FBINFO_FLAG_DEFAULT;

The #define FBINFO_FLAG_DEFAULT FBINFO_DEFAULT seems to be there since the
original v2.6.12-rc2 git import in commit 1da177e4c3f4, so is hard to know
why was introduced. FBINFO_DEFAULT is more used, I will just stick to that:

$ git grep FBINFO_DEFAULT | wc -l
92

$ git grep FBINFO_FLAG_DEFAULT | wc -l
38

Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>

--
Best regards,

Javier Martinez Canillas
Core Platforms
Red Hat