linux-kernel - [PATCH] dmaengine: ti: k3-udma: add missing put_device() call in of_xudma_dev

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Message-ID: <20200618130110.582543-1-yukuai3@huawei.com>
Date:   Thu, 18 Jun 2020 21:01:10 +0800
From:   Yu Kuai <yukuai3@...wei.com>
To:     <vkoul@...nel.org>, <dan.j.williams@...el.com>,
        <peter.ujfalusi@...com>, <grygorii.strashko@...com>
CC:     <dmaengine@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <yukuai3@...wei.com>, <yi.zhang@...wei.com>
Subject: [PATCH] dmaengine: ti: k3-udma: add missing put_device() call in of_xudma_dev_get()

if of_find_device_by_node() succeed and platform_get_drvdata() failed,
of_xudma_dev_get() will return without put_device(), which will leak
the memory.

Signed-off-by: Yu Kuai <yukuai3@...wei.com>
---
 drivers/dma/ti/k3-udma-private.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/dma/ti/k3-udma-private.c b/drivers/dma/ti/k3-udma-private.c
index 0b8f3dd6b146..77e8e67d995b 100644
--- a/drivers/dma/ti/k3-udma-private.c
+++ b/drivers/dma/ti/k3-udma-private.c
@@ -42,6 +42,7 @@ struct udma_dev *of_xudma_dev_get(struct device_node *np, const char *property)
 	ud = platform_get_drvdata(pdev);
 	if (!ud) {
 		pr_debug("UDMA has not been probed\n");
+		put_device(&pdev->dev);
 		return ERR_PTR(-EPROBE_DEFER);
 	}
 
-- 
2.25.4