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

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Date:   Wed,  1 Jun 2022 16:40:24 +0400
From:   Miaoqian Lin <linmq006@...il.com>
To:     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>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Thierry Reding <treding@...dia.com>,
        Andrzej Hajda <andrzej.hajda@...el.com>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Cc:     linmq006@...il.com
Subject: [RESEND 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 c40bde96cfdf..8cc8deca006f 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);
 	}
 
-- 
2.25.1