Review-by: James Jones <jajo...@nvidia.com>
Tested-by: James Jones <jajo...@nvidia.com>

Tested on GB203, TU102, and NV50.

Thanks,
-James

On 7/28/25 03:16, Imre Deak wrote:
Plumb the format info from .fb_create() all the way to
drm_helper_mode_fill_fb_struct() to avoid the redundant
lookup.

The patch is based on the driver parts of the patchset at Link:
below, which missed converting the nouveau driver.

Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
Cc: Lyude Paul <ly...@redhat.com>
Cc: Danilo Krummrich <d...@kernel.org>
Cc: Thomas Zimmermann <tzimmerm...@suse.de>
Cc: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
Cc: Maxime Ripard <mrip...@kernel.org>
Fixes: 41ab92d35ccd ("drm: Make passing of format info to 
drm_helper_mode_fill_fb_struct() mandatory")
Link: 
https://lore.kernel.org/all/20250701090722.13645-1-ville.syrj...@linux.intel.com
Signed-off-by: Imre Deak <imre.d...@intel.com>
---
  drivers/gpu/drm/nouveau/nouveau_display.c | 9 +++------
  drivers/gpu/drm/nouveau/nouveau_display.h | 3 +++
  2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c 
b/drivers/gpu/drm/nouveau/nouveau_display.c
index e1e5421263103..805d0a87aa546 100644
--- a/drivers/gpu/drm/nouveau/nouveau_display.c
+++ b/drivers/gpu/drm/nouveau/nouveau_display.c
@@ -253,6 +253,7 @@ nouveau_check_bl_size(struct nouveau_drm *drm, struct 
nouveau_bo *nvbo,
int
  nouveau_framebuffer_new(struct drm_device *dev,
+                       const struct drm_format_info *info,
                        const struct drm_mode_fb_cmd2 *mode_cmd,
                        struct drm_gem_object *gem,
                        struct drm_framebuffer **pfb)
@@ -260,7 +261,6 @@ nouveau_framebuffer_new(struct drm_device *dev,
        struct nouveau_drm *drm = nouveau_drm(dev);
        struct nouveau_bo *nvbo = nouveau_gem_object(gem);
        struct drm_framebuffer *fb;
-       const struct drm_format_info *info;
        unsigned int height, i;
        uint32_t tile_mode;
        uint8_t kind;
@@ -295,9 +295,6 @@ nouveau_framebuffer_new(struct drm_device *dev,
                kind = nvbo->kind;
        }
- info = drm_get_format_info(dev, mode_cmd->pixel_format,
-                                  mode_cmd->modifier[0]);
-
        for (i = 0; i < info->num_planes; i++) {
                height = drm_format_info_plane_height(info,
                                                      mode_cmd->height,
@@ -321,7 +318,7 @@ nouveau_framebuffer_new(struct drm_device *dev,
        if (!(fb = *pfb = kzalloc(sizeof(*fb), GFP_KERNEL)))
                return -ENOMEM;
- drm_helper_mode_fill_fb_struct(dev, fb, NULL, mode_cmd);
+       drm_helper_mode_fill_fb_struct(dev, fb, info, mode_cmd);
        fb->obj[0] = gem;
ret = drm_framebuffer_init(dev, fb, &nouveau_framebuffer_funcs);
@@ -344,7 +341,7 @@ nouveau_user_framebuffer_create(struct drm_device *dev,
        if (!gem)
                return ERR_PTR(-ENOENT);
- ret = nouveau_framebuffer_new(dev, mode_cmd, gem, &fb);
+       ret = nouveau_framebuffer_new(dev, info, mode_cmd, gem, &fb);
        if (ret == 0)
                return fb;
diff --git a/drivers/gpu/drm/nouveau/nouveau_display.h b/drivers/gpu/drm/nouveau/nouveau_display.h
index e45f211501f61..470e0910d4845 100644
--- a/drivers/gpu/drm/nouveau/nouveau_display.h
+++ b/drivers/gpu/drm/nouveau/nouveau_display.h
@@ -8,8 +8,11 @@
#include <drm/drm_framebuffer.h> +struct drm_format_info;
+
  int
  nouveau_framebuffer_new(struct drm_device *dev,
+                       const struct drm_format_info *info,
                        const struct drm_mode_fb_cmd2 *mode_cmd,
                        struct drm_gem_object *gem,
                        struct drm_framebuffer **pfb);

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