diff options
author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2024-01-07 13:02:03 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-02-16 21:06:24 +0300 |
commit | 13535ae766550b9d5e1fd09134a6085c36035d40 (patch) | |
tree | 00a974e7b651d16d528b0cc6c5e4917f54d07fee /drivers/dma | |
parent | 908939b8e81a9ceaa34af6eae3d28b35e6697ee2 (diff) | |
download | linux-13535ae766550b9d5e1fd09134a6085c36035d40.tar.xz |
dmaengine: fsl-qdma: Fix a memory leak related to the status queue DMA
[ Upstream commit 968bc1d7203d384e72afe34124a1801b7af76514 ]
This dma_alloc_coherent() is undone in the remove function, but not in the
error handling path of fsl_qdma_probe().
Switch to the managed version to fix the issue in the probe and simplify
the remove function.
Fixes: b092529e0aa0 ("dmaengine: fsl-qdma: Add qDMA controller driver for Layerscape SoCs")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/a0ef5d0f5a47381617ef339df776ddc68ce48173.1704621515.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/dma')
-rw-r--r-- | drivers/dma/fsl-qdma.c | 17 |
1 files changed, 5 insertions, 12 deletions
diff --git a/drivers/dma/fsl-qdma.c b/drivers/dma/fsl-qdma.c index 045ead46ec8f..5cc887acb05b 100644 --- a/drivers/dma/fsl-qdma.c +++ b/drivers/dma/fsl-qdma.c @@ -563,11 +563,11 @@ static struct fsl_qdma_queue /* * Buffer for queue command */ - status_head->cq = dma_alloc_coherent(&pdev->dev, - sizeof(struct fsl_qdma_format) * - status_size, - &status_head->bus_addr, - GFP_KERNEL); + status_head->cq = dmam_alloc_coherent(&pdev->dev, + sizeof(struct fsl_qdma_format) * + status_size, + &status_head->bus_addr, + GFP_KERNEL); if (!status_head->cq) { devm_kfree(&pdev->dev, status_head); return NULL; @@ -1272,8 +1272,6 @@ static void fsl_qdma_cleanup_vchan(struct dma_device *dmadev) static int fsl_qdma_remove(struct platform_device *pdev) { - int i; - struct fsl_qdma_queue *status; struct device_node *np = pdev->dev.of_node; struct fsl_qdma_engine *fsl_qdma = platform_get_drvdata(pdev); @@ -1282,11 +1280,6 @@ static int fsl_qdma_remove(struct platform_device *pdev) of_dma_controller_free(np); dma_async_device_unregister(&fsl_qdma->dma_dev); - for (i = 0; i < fsl_qdma->block_number; i++) { - status = fsl_qdma->status[i]; - dma_free_coherent(&pdev->dev, sizeof(struct fsl_qdma_format) * - status->n_cq, status->cq, status->bus_addr); - } return 0; } |