media: mediatek: vcodec: Fix a resource leak related to the scp device in FW initiali...

commit 4936cd5817af35d23e4d283f48fa59a18ef481e4 upstream.

On Mediatek devices with a system companion processor (SCP) the mtk_scp
structure has to be removed explicitly to avoid a resource leak.
Free the structure in case the allocation of the firmware structure fails
during the firmware initialization.

Fixes: 53dbe0850444 ("media: mtk-vcodec: potential null pointer deference in SCP")
Cc: stable@vger.kernel.org
Signed-off-by: Jiasheng Jiang <jiashengjiangcool@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_fw_scp.c b/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_fw_scp.c
index 774487fb72a3196f9f63fc2cb9097b4aaf30933c..93579a7009a7bc55e9e69977d569756ae57b1b2f 100644 (file)
--- a/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_fw_scp.c
+++ b/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_fw_scp.c
@@ -79,8 +79,11 @@ struct mtk_vcodec_fw *mtk_vcodec_fw_scp_init(void *priv, enum mtk_vcodec_fw_use
        }
 
        fw = devm_kzalloc(&plat_dev->dev, sizeof(*fw), GFP_KERNEL);
-       if (!fw)
+       if (!fw) {
+               scp_put(scp);
                return ERR_PTR(-ENOMEM);
+       }
+
        fw->type = SCP;
        fw->ops = &mtk_vcodec_rproc_msg;
        fw->scp = scp;