linux-kernel - [PATCH] drm/gem-framebuffer: log errors when gem size < afbc

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Message-ID: <20250508084811.2472877-1-andyshrk@163.com>
Date: Thu,  8 May 2025 16:47:57 +0800
From: Andy Yan <andyshrk@....com>
To: tzimmermann@...e.de
Cc: simona@...ll.ch,
	mripard@...nel.org,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	Andy Yan <andyshrk@....com>
Subject: [PATCH] drm/gem-framebuffer: log errors when gem size < afbc_size

Let the user know what went wrong in drm_gem_fb_afbc_init
failure paths.

Signed-off-by: Andy Yan <andyshrk@....com>
---

 drivers/gpu/drm/drm_gem_framebuffer_helper.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_gem_framebuffer_helper.c b/drivers/gpu/drm/drm_gem_framebuffer_helper.c
index 6f72e7a0f427..baf99a68bdb5 100644
--- a/drivers/gpu/drm/drm_gem_framebuffer_helper.c
+++ b/drivers/gpu/drm/drm_gem_framebuffer_helper.c
@@ -607,8 +607,11 @@ int drm_gem_fb_afbc_init(struct drm_device *dev,
 	if (ret < 0)
 		return ret;
 
-	if (objs[0]->size < afbc_fb->afbc_size)
+	if (objs[0]->size < afbc_fb->afbc_size) {
+		drm_dbg_kms(dev, "GEM object size (%zu) smaller than minimum afbc size (%u)\n",
+			    objs[0]->size, afbc_fb->afbc_size);
 		return -EINVAL;
+	}
 
 	return 0;
 }
-- 
2.43.0