linux-kernel - [PATCH] drm/rockchip: cleanup fb when drm_gem_fb_afbc

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Message-ID: <20250509031607.2542187-1-andyshrk@163.com>
Date: Fri,  9 May 2025 11:15:59 +0800
From: Andy Yan <andyshrk@....com>
To: heiko@...ech.de
Cc: andrzej.p@...labora.com,
	hjc@...k-chips.com,
	dri-devel@...ts.freedesktop.org,
	tzimmermann@...e.de,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-rockchip@...ts.infradead.org,
	Andy Yan <andy.yan@...k-chips.com>
Subject: [PATCH] drm/rockchip: cleanup fb when drm_gem_fb_afbc_init failed

From: Andy Yan <andy.yan@...k-chips.com>

In the function drm_gem_fb_init_with_funcs, the framebuffer (fb)
and its corresponding object ID have already been registered.

So we need to cleanup the drm framebuffer if the subsequent
execution of drm_gem_fb_afbc_init fails.

Directly call drm_framebuffer_put to ensure that all fb related
resources are cleanup.

Fixes: 7707f7227f09 ("drm/rockchip: Add support for afbc")
Signed-off-by: Andy Yan <andy.yan@...k-chips.com>
---

 drivers/gpu/drm/rockchip/rockchip_drm_fb.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_fb.c b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
index dcc1f07632c3a..5829ee061c61b 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
@@ -52,16 +52,9 @@ rockchip_fb_create(struct drm_device *dev, struct drm_file *file,
 	}
 
 	if (drm_is_afbc(mode_cmd->modifier[0])) {
-		int ret, i;
-
 		ret = drm_gem_fb_afbc_init(dev, mode_cmd, afbc_fb);
 		if (ret) {
-			struct drm_gem_object **obj = afbc_fb->base.obj;
-
-			for (i = 0; i < info->num_planes; ++i)
-				drm_gem_object_put(obj[i]);
-
-			kfree(afbc_fb);
+			drm_framebuffer_put(&afbc_fb->base);
 			return ERR_PTR(ret);
 		}
 	}
-- 
2.43.0

base-commit: 98f498ca33ac03f4d9514e66cdfec9ee58808f82
branch: rk3036_hdmi_bridge_v5