From 56715b45e3bfecf82e6404df19a10699a67c3a74 Mon Sep 17 00:00:00 2001 From: Ludovic Desroches Date: Wed, 26 Nov 2025 15:44:44 +0100 Subject: [PATCH] drm/gem-dma: revert the 8-byte alignment constraint MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Using drm_mode_size_dumb() to compute the size of dumb buffers introduced an 8-byte alignment constraint on the pitch that wasn’t present before. Let’s remove this constraint, which isn’t necessarily required and may cause buffers to be allocated larger than needed. Signed-off-by: Ludovic Desroches Reviewed-by: Thomas Zimmermann Fixes: dcacfcd35cef ("drm/gem-dma: Compute dumb-buffer sizes with drm_mode_size_dumb()") Signed-off-by: Thomas Zimmermann Link: https://patch.msgid.link/20251126-lcd_pitch_alignment-v1-1-991610a1e369@microchip.com --- drivers/gpu/drm/drm_gem_dma_helper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_gem_dma_helper.c b/drivers/gpu/drm/drm_gem_dma_helper.c index 12d8307997a0..eb56ba234796 100644 --- a/drivers/gpu/drm/drm_gem_dma_helper.c +++ b/drivers/gpu/drm/drm_gem_dma_helper.c @@ -308,7 +308,7 @@ int drm_gem_dma_dumb_create(struct drm_file *file_priv, struct drm_gem_dma_object *dma_obj; int ret; - ret = drm_mode_size_dumb(drm, args, SZ_8, 0); + ret = drm_mode_size_dumb(drm, args, 0, 0); if (ret) return ret; -- 2.47.3