[PATCH 5.4 083/122] drm/tegra: Dont set allow_fb_modifiers explicitly

From: Greg Kroah-Hartman
Date: Thu Jul 15 2021 - 14:45:18 EST


From: Daniel Vetter <daniel.vetter@xxxxxxxx>

commit be4306ad928fcf736cbe2616b6dd19d91f1bc083 upstream.

Since

commit 890880ddfdbe256083170866e49c87618b706ac7
Author: Paul Kocialkowski <paul.kocialkowski@xxxxxxxxxxx>
Date: Fri Jan 4 09:56:10 2019 +0100

drm: Auto-set allow_fb_modifiers when given modifiers at plane init

this is done automatically as part of plane init, if drivers set the
modifier list correctly. Which is the case here.

It was slightly inconsistently though, since planes with only linear
modifier support haven't listed that explicitly. Fix that, and cc:
stable to allow userspace to rely on this. Again don't backport
further than where Paul's patch got added.

Cc: stable@xxxxxxxxxxxxxxx # v5.1 +
Cc: Pekka Paalanen <pekka.paalanen@xxxxxxxxxxxxx>
Acked-by: Thierry Reding <treding@xxxxxxxxxx>
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
Cc: Thierry Reding <thierry.reding@xxxxxxxxx>
Cc: Jonathan Hunter <jonathanh@xxxxxxxxxx>
Cc: linux-tegra@xxxxxxxxxxxxxxx
Link: https://patchwork.freedesktop.org/patch/msgid/20210413094904.3736372-10-daniel.vetter@xxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/gpu/drm/tegra/dc.c | 10 ++++++++--
drivers/gpu/drm/tegra/drm.c | 2 --
2 files changed, 8 insertions(+), 4 deletions(-)

--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -919,6 +919,11 @@ static const struct drm_plane_helper_fun
.atomic_disable = tegra_cursor_atomic_disable,
};

+static const uint64_t linear_modifiers[] = {
+ DRM_FORMAT_MOD_LINEAR,
+ DRM_FORMAT_MOD_INVALID
+};
+
static struct drm_plane *tegra_dc_cursor_plane_create(struct drm_device *drm,
struct tegra_dc *dc)
{
@@ -947,7 +952,7 @@ static struct drm_plane *tegra_dc_cursor

err = drm_universal_plane_init(drm, &plane->base, possible_crtcs,
&tegra_plane_funcs, formats,
- num_formats, NULL,
+ num_formats, linear_modifiers,
DRM_PLANE_TYPE_CURSOR, NULL);
if (err < 0) {
kfree(plane);
@@ -1065,7 +1070,8 @@ static struct drm_plane *tegra_dc_overla

err = drm_universal_plane_init(drm, &plane->base, possible_crtcs,
&tegra_plane_funcs, formats,
- num_formats, NULL, type, NULL);
+ num_formats, linear_modifiers,
+ type, NULL);
if (err < 0) {
kfree(plane);
return ERR_PTR(err);
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -122,8 +122,6 @@ static int tegra_drm_load(struct drm_dev
drm->mode_config.max_width = 4096;
drm->mode_config.max_height = 4096;

- drm->mode_config.allow_fb_modifiers = true;
-
drm->mode_config.normalize_zpos = true;

drm->mode_config.funcs = &tegra_drm_mode_config_funcs;