From 6fd37c99b8edcdf8c62e3d65a0856c477b51209d Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Thu, 21 Aug 2025 10:17:27 +0200 Subject: [PATCH] drm/tegra: Compute dumb-buffer sizes with drm_mode_size_dumb() Call drm_mode_size_dumb() to compute dumb-buffer scanline pitch and buffer size. Align the pitch according to hardware requirements. Signed-off-by: Thomas Zimmermann Acked-by: Thierry Reding Cc: Thierry Reding Cc: Mikko Perttunen Link: https://lore.kernel.org/r/20250821081918.79786-21-tzimmermann@suse.de --- drivers/gpu/drm/tegra/gem.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c index 8ede07fb7a21d..6b14f1e919eb6 100644 --- a/drivers/gpu/drm/tegra/gem.c +++ b/drivers/gpu/drm/tegra/gem.c @@ -16,6 +16,7 @@ #include #include +#include #include #include "drm.h" @@ -542,12 +543,13 @@ void tegra_bo_free_object(struct drm_gem_object *gem) int tegra_bo_dumb_create(struct drm_file *file, struct drm_device *drm, struct drm_mode_create_dumb *args) { - unsigned int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8); struct tegra_drm *tegra = drm->dev_private; struct tegra_bo *bo; + int ret; - args->pitch = round_up(min_pitch, tegra->pitch_align); - args->size = args->pitch * args->height; + ret = drm_mode_size_dumb(drm, args, tegra->pitch_align, 0); + if (ret) + return ret; bo = tegra_bo_create_with_handle(file, drm, args->size, 0, &args->handle); -- 2.47.3