Re: [PATCH v2] dmaengine: amlogic: Fix missing destroy_workqueue() at error path in aml_dma_probe()

[Xianwei Zhao <xianwei.zhao@amlogic.com>]

Reviewed-by: Xianwei Zhao <xianwei.zhao@amlogic.com>

On 2026/10/24 17:05, Christophe JAILLET wrote:
> If an error occurs after the alloc_ordered_workqueue() call, the
> corresponding memory is never released.
> 
> Use the managed version instead, as already done by most functions in the
> probe and simplify the remove function accordingly.
> 
> This avoids the leak.
> 
> Fixes: b84b5197e344 ("dmaengine: amlogic: Add general DMA driver for A9")
> Signed-off-by: Christophe JAILLET<christophe.jaillet@wanadoo.fr>
> ---
> Compile tested only.
> 
> Changes in v2:
>    - update the subject   [Franck Li]
> 
> v1:https://lore.kernel.org/lkml/93183551770e260aff993bb4cf1ce5ba8dc1e732.1792785154.git.christophe.jaillet@wanadoo.fr/
> ---
>   drivers/dma/amlogic-dma.c | 3 +--
>   1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/dma/amlogic-dma.c b/drivers/dma/amlogic-dma.c
> index 684121d13fca..791bd82743d3 100644
> --- a/drivers/dma/amlogic-dma.c
> +++ b/drivers/dma/amlogic-dma.c
> @@ -620,7 +620,7 @@ static int aml_dma_probe(struct platform_device *pdev)
>          if (!aml_dma)
>                  return -ENOMEM;
> 
> -       aml_dma->free_wq = alloc_ordered_workqueue("aml_dma_free", 0);
> +       aml_dma->free_wq = devm_alloc_ordered_workqueue(&pdev->dev, "aml_dma_free", 0);
>          if (!aml_dma->free_wq)
>                  return -ENOMEM;
> 
> @@ -712,7 +712,6 @@ static void aml_dma_remove(struct platform_device *pdev)
>                  if (aml_chan)
>                          tasklet_kill(&aml_chan->vchan.task);
>          }
> -       destroy_workqueue(aml_dma->free_wq);
>   }
> 
>   static const struct of_device_id aml_dma_ids[] = {