linux-kernel - [PATCH 2/3] dmaengine: fsl-qdma: Fix a memory leak related to the queue command DMA

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Date: Sun,  7 Jan 2024 11:02:04 +0100
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: vkoul@...nel.org,
	jiaheng.fan@....com,
	peng.ma@....com,
	wen.he_1@....com
Cc: dmaengine@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org,
	Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH 2/3] dmaengine: fsl-qdma: Fix a memory leak related to the queue command DMA

This dma_alloc_coherent() is undone neither in the remove function, nor in
the error handling path of fsl_qdma_probe().

Switch to the managed version to fix both issues.

Fixes: b092529e0aa0 ("dmaengine: fsl-qdma: Add qDMA controller driver for Layerscape SoCs")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/dma/fsl-qdma.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/dma/fsl-qdma.c b/drivers/dma/fsl-qdma.c
index 38409e06040a..3a5595a1d442 100644
--- a/drivers/dma/fsl-qdma.c
+++ b/drivers/dma/fsl-qdma.c
@@ -514,11 +514,11 @@ static struct fsl_qdma_queue
 			queue_temp = queue_head + i + (j * queue_num);
 
 			queue_temp->cq =
-			dma_alloc_coherent(&pdev->dev,
-					   sizeof(struct fsl_qdma_format) *
-					   queue_size[i],
-					   &queue_temp->bus_addr,
-					   GFP_KERNEL);
+			dmam_alloc_coherent(&pdev->dev,
+					    sizeof(struct fsl_qdma_format) *
+					    queue_size[i],
+					    &queue_temp->bus_addr,
+					    GFP_KERNEL);
 			if (!queue_temp->cq)
 				return NULL;
 			queue_temp->block_base = fsl_qdma->block_base +
-- 
2.34.1