linux-kernel - [PATCH] drm/mipi-dsi: Fix error handling in mipi_dsi_device_register

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Message-Id: <20211227131541.9742-1-linmq006@gmail.com>
Date:   Mon, 27 Dec 2021 13:15:40 +0000
From:   Miaoqian Lin <linmq006@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     linmq006@...il.com,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Thierry Reding <treding@...dia.com>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH] drm/mipi-dsi: Fix error handling in mipi_dsi_device_register_full

In mipi_dsi_device_alloc(), it calls device_initialize(&dsi->dev);
We need to use put_device() instead freeing directly.

Fixes: 068a002 ("drm: Add MIPI DSI bus support")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 drivers/gpu/drm/drm_mipi_dsi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
index 18cef04df2f2..609bd9fc1bc5 100644
--- a/drivers/gpu/drm/drm_mipi_dsi.c
+++ b/drivers/gpu/drm/drm_mipi_dsi.c
@@ -228,7 +228,7 @@ mipi_dsi_device_register_full(struct mipi_dsi_host *host,
 	ret = mipi_dsi_device_add(dsi);
 	if (ret) {
 		drm_err(host, "failed to add DSI device %d\n", ret);
-		kfree(dsi);
+		put_device(&dsi->dev);
 		return ERR_PTR(ret);
 	}
 
-- 
2.17.1