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List:       dmaengine
Subject:    Re: [PATCH v3 30/35] dmaengine: virt-dma: convert tasklets to use new tasklet_setup() API
From:       Peter Ujfalusi <peter.ujfalusi () ti ! com>
Date:       2020-08-31 11:30:59
Message-ID: 84ceeee1-bd19-b2a7-f969-fb96c10a1297 () ti ! com
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On 31/08/2020 13.35, Allen Pais wrote:
> In preparation for unconditionally passing the
> struct tasklet_struct pointer to all tasklet
> callbacks, switch to using the new tasklet_setup()
> and from_tasklet() to pass the tasklet pointer explicitly.

Reviewed-by: Peter Ujfalusi <peter.ujfalusi@ti.com>

> Signed-off-by: Romain Perier <romain.perier@gmail.com>
> Signed-off-by: Allen Pais <allen.lkml@gmail.com>
> ---
>  drivers/dma/virt-dma.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/dma/virt-dma.c b/drivers/dma/virt-dma.c
> index 23e33a85f033..a6f4265be0c9 100644
> --- a/drivers/dma/virt-dma.c
> +++ b/drivers/dma/virt-dma.c
> @@ -80,9 +80,9 @@ EXPORT_SYMBOL_GPL(vchan_find_desc);
>   * This tasklet handles the completion of a DMA descriptor by
>   * calling its callback and freeing it.
>   */
> -static void vchan_complete(unsigned long arg)
> +static void vchan_complete(struct tasklet_struct *t)
>  {
> -	struct virt_dma_chan *vc = (struct virt_dma_chan *)arg;
> +	struct virt_dma_chan *vc = from_tasklet(vc, t, task);
>  	struct virt_dma_desc *vd, *_vd;
>  	struct dmaengine_desc_callback cb;
>  	LIST_HEAD(head);
> @@ -131,7 +131,7 @@ void vchan_init(struct virt_dma_chan *vc, struct dma_device *dmadev)
>  	INIT_LIST_HEAD(&vc->desc_completed);
>  	INIT_LIST_HEAD(&vc->desc_terminated);
>  
> -	tasklet_init(&vc->task, vchan_complete, (unsigned long)vc);
> +	tasklet_setup(&vc->task, vchan_complete);
>  
>  	vc->chan.device = dmadev;
>  	list_add_tail(&vc->chan.device_node, &dmadev->channels);
> 

- Péter

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