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[35/35] dma: k3-udma: convert tasklets to use new tasklet_setup() API

Message ID 20200818090638.26362-36-allen.lkml@gmail.com (mailing list archive)
State Changes Requested
Headers show
Series dma: convert tasklets to use new tasklet_setup() | expand

Commit Message

Allen Aug. 18, 2020, 9:06 a.m. UTC
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.

Signed-off-by: Allen Pais <allen.lkml@gmail.com>
---
 drivers/dma/ti/k3-udma.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

Comments

Peter Ujfalusi Aug. 18, 2020, 10:24 a.m. UTC | #1
Hi Allen,

On 18/08/2020 12.06, 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.

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

> Signed-off-by: Allen Pais <allen.lkml@gmail.com>
> ---
>  drivers/dma/ti/k3-udma.c | 7 +++----
>  1 file changed, 3 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c
> index c14e6cb105cd..59cd8770334c 100644
> --- a/drivers/dma/ti/k3-udma.c
> +++ b/drivers/dma/ti/k3-udma.c
> @@ -2914,9 +2914,9 @@ static void udma_desc_pre_callback(struct virt_dma_chan *vc,
>   * This tasklet handles the completion of a DMA descriptor by
>   * calling its callback and freeing it.
>   */
> -static void udma_vchan_complete(unsigned long arg)
> +static void udma_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);
> @@ -3649,8 +3649,7 @@ static int udma_probe(struct platform_device *pdev)
>  
>  		vchan_init(&uc->vc, &ud->ddev);
>  		/* Use custom vchan completion handling */
> -		tasklet_init(&uc->vc.task, udma_vchan_complete,
> -			     (unsigned long)&uc->vc);
> +		tasklet_setup(&uc->vc.task, udma_vchan_complete);
>  		init_completion(&uc->teardown_completed);
>  		INIT_DELAYED_WORK(&uc->tx_drain.work, udma_check_tx_completion);
>  	}
> 

- Péter

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Patch

diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c
index c14e6cb105cd..59cd8770334c 100644
--- a/drivers/dma/ti/k3-udma.c
+++ b/drivers/dma/ti/k3-udma.c
@@ -2914,9 +2914,9 @@  static void udma_desc_pre_callback(struct virt_dma_chan *vc,
  * This tasklet handles the completion of a DMA descriptor by
  * calling its callback and freeing it.
  */
-static void udma_vchan_complete(unsigned long arg)
+static void udma_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);
@@ -3649,8 +3649,7 @@  static int udma_probe(struct platform_device *pdev)
 
 		vchan_init(&uc->vc, &ud->ddev);
 		/* Use custom vchan completion handling */
-		tasklet_init(&uc->vc.task, udma_vchan_complete,
-			     (unsigned long)&uc->vc);
+		tasklet_setup(&uc->vc.task, udma_vchan_complete);
 		init_completion(&uc->teardown_completed);
 		INIT_DELAYED_WORK(&uc->tx_drain.work, udma_check_tx_completion);
 	}