From: Satendra Singh Thakur <sst2005@gmail.com>
Cc: Sean Wang <sean.wang@mediatek.com>,
linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org,
Vinod Koul <vkoul@kernel.org>,
linux-mediatek@lists.infradead.org,
Matthias Brugger <matthias.bgg@gmail.com>,
Dan Williams <dan.j.williams@intel.com>,
Satendra Singh Thakur <sst2005@gmail.com>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v1] dmaengine: mediatek: hsdma_probe: fixed a memory leak when devm_request_irq fails
Date: Sat, 9 Nov 2019 17:05:23 +0530 [thread overview]
Message-ID: <20191109113523.6067-1-sst2005@gmail.com> (raw)
In-Reply-To: <20191105165914.GD952516@vkoul-mobl>
When devm_request_irq fails, currently, the function
dma_async_device_unregister gets called. This doesn't free
the resources allocated by of_dma_controller_register.
Therefore, we have called of_dma_controller_free for this purpose.
Signed-off-by: Satendra Singh Thakur <sst2005@gmail.com>
---
v1: modified the subject line with new tags
drivers/dma/mediatek/mtk-hsdma.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/dma/mediatek/mtk-hsdma.c b/drivers/dma/mediatek/mtk-hsdma.c
index 1a2028e1c29e..4c58da742143 100644
--- a/drivers/dma/mediatek/mtk-hsdma.c
+++ b/drivers/dma/mediatek/mtk-hsdma.c
@@ -997,7 +997,7 @@ static int mtk_hsdma_probe(struct platform_device *pdev)
if (err) {
dev_err(&pdev->dev,
"request_irq failed with err %d\n", err);
- goto err_unregister;
+ goto err_free;
}
platform_set_drvdata(pdev, hsdma);
@@ -1006,6 +1006,8 @@ static int mtk_hsdma_probe(struct platform_device *pdev)
return 0;
+err_free:
+ of_dma_controller_free(pdev->dev.of_node);
err_unregister:
dma_async_device_unregister(dd);
--
2.17.1
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next prev parent reply other threads:[~2019-11-09 11:35 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-24 4:43 [PATCH] dma/mediatek-hs/probe: Fixed a memory leak when devm_request_irq fails Satendra Singh Thakur
2019-11-05 16:59 ` Vinod Koul
2019-11-09 11:35 ` Satendra Singh Thakur [this message]
2019-11-14 6:47 ` [PATCH v1] dmaengine: mediatek: hsdma_probe: fixed " Vinod Koul
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