linux-kernel - [PATCH 3/3] dmaengine: at_hdmac: add missing kfree() call in at_dma

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Date:   Mon, 17 Aug 2020 19:57:28 +0800
From:   Yu Kuai <yukuai3@...wei.com>
To:     <ludovic.desroches@...rochip.com>, <tudor.ambarus@...rochip.com>,
        <vkoul@...nel.org>, <dan.j.williams@...el.com>,
        <nicolas.ferre@...rochip.com>, <plagnioj@...osoft.com>,
        <arnd@...db.de>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <dmaengine@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <yi.zhang@...wei.com>, <yukuai3@...wei.com>
Subject: [PATCH 3/3] dmaengine: at_hdmac: add missing kfree() call in at_dma_xlate()

If memory allocation for 'atslave' succeed, at_dma_xlate() doesn't have a
corresponding kfree() in exception handling. Thus add kfree() for this
function implementation.

Fixes: bbe89c8e3d59 ("at_hdmac: move to generic DMA binding")
Signed-off-by: Yu Kuai <yukuai3@...wei.com>
---
 drivers/dma/at_hdmac.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index bf874367097c..a2cf25c6e3b3 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -1691,6 +1691,7 @@ static struct dma_chan *at_dma_xlate(struct of_phandle_args *dma_spec,
 	chan = dma_request_channel(mask, at_dma_filter, atslave);
 	if (!chan) {
 		put_device(&dmac_pdev->dev);
+		kfree(atslave);
 		return NULL;
 	}
 
-- 
2.25.4