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Date:   Mon, 17 Aug 2020 13:47:26 +0530
From:   Allen Pais <>
        Allen Pais <>
Subject: [PATCH 35/35] dma: k3-udma: convert tasklets to use new tasklet_setup() API

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 <>
 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;
@@ -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_DELAYED_WORK(&uc->, udma_check_tx_completion);

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