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| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2024-01-07 11:02:03 +0100 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2024-01-22 12:29:33 +0100 |
| commit | 968bc1d7203d384e72afe34124a1801b7af76514 (patch) | |
| tree | c3d6b05487a95bff163936c64ad6203d308c41a7 /drivers/dma | |
| parent | dmaengine: ti: k3-udma: Report short packet errors (diff) | |
| download | linux-968bc1d7203d384e72afe34124a1801b7af76514.tar.xz linux-968bc1d7203d384e72afe34124a1801b7af76514.zip | |
dmaengine: fsl-qdma: Fix a memory leak related to the status queue DMA
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>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/fsl-qdma.c | 18 |
1 files changed, 5 insertions, 13 deletions
diff --git a/drivers/dma/fsl-qdma.c b/drivers/dma/fsl-qdma.c index a1d0aa63142a..28c4e86bbcd2 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; @@ -1268,8 +1268,6 @@ static void fsl_qdma_cleanup_vchan(struct dma_device *dmadev) static void 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); @@ -1277,12 +1275,6 @@ static void fsl_qdma_remove(struct platform_device *pdev) fsl_qdma_cleanup_vchan(&fsl_qdma->dma_dev); 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); - } } static const struct of_device_id fsl_qdma_dt_ids[] = { |