linux-kernel - [PATCH 5.10 128/717] media: platform: add missing put_device() call in mtk_jpeg_probe() and mtk_jpeg

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Message-Id: <20201228125027.081282909@linuxfoundation.org>
Date:   Mon, 28 Dec 2020 13:42:06 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Yu Kuai <yukuai3@...wei.com>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.10 128/717] media: platform: add missing put_device() call in mtk_jpeg_probe() and mtk_jpeg_remove()

From: Yu Kuai <yukuai3@...wei.com>

[ Upstream commit 0d72f489995bb8565f6fe30539d4504c88356a9e ]

if mtk_jpeg_clk_init() succeed, mtk_jpeg_probe() and mtk_jpeg_remove()
doesn't have a corresponding put_device(). Thus add a new helper
mtk_jpeg_clk_release() to fix it.

Fixes: b2f0d2724ba4 ("[media] vcodec: mediatek: Add Mediatek JPEG Decoder Driver")
Signed-off-by: Yu Kuai <yukuai3@...wei.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@...all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
index 106543391c460..88a23bce569d9 100644
--- a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
+++ b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
@@ -1332,6 +1332,12 @@ static void mtk_jpeg_job_timeout_work(struct work_struct *work)
 	v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
 	v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
 }
+
+static inline void mtk_jpeg_clk_release(struct mtk_jpeg_dev *jpeg)
+{
+	put_device(jpeg->larb);
+}
+
 static int mtk_jpeg_probe(struct platform_device *pdev)
 {
 	struct mtk_jpeg_dev *jpeg;
@@ -1436,6 +1442,7 @@ err_m2m_init:
 	v4l2_device_unregister(&jpeg->v4l2_dev);
 
 err_dev_register:
+	mtk_jpeg_clk_release(jpeg);
 
 err_clk_init:
 
@@ -1453,6 +1460,7 @@ static int mtk_jpeg_remove(struct platform_device *pdev)
 	video_device_release(jpeg->vdev);
 	v4l2_m2m_release(jpeg->m2m_dev);
 	v4l2_device_unregister(&jpeg->v4l2_dev);
+	mtk_jpeg_clk_release(jpeg);
 
 	return 0;
 }
-- 
2.27.0