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

Hi

Am 05.07.23 um 10:49 schrieb Javier Martinez Canillas:

Thomas Zimmermann [off-list ref] writes:

quoted

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 ?

quoted

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 <redacted>
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:

Thanks for commenting on this issue. I didn't notice that.

I think I'll just remove these _DEFAULT assignments from the patchset.

And I think we should nuke them entirely everywhere. The _DEFAULT values are just 0 after commit 376b3ff54c9a1. So there's no value in assigning them at all.

Best regards
Thomas

$ git grep FBINFO_DEFAULT | wc -l
92

$ git grep FBINFO_FLAG_DEFAULT | wc -l
38

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

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
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