dmaengine: sa11x0: 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: Romain Perier <[e-mail]>
Signed-off-by: Allen Pais <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

drivers/dma/sa11x0-dma.c

···
 	}
 }
 
-static void sa11x0_dma_tasklet(unsigned long arg)
+static void sa11x0_dma_tasklet(struct tasklet_struct *t)
 {
-	struct sa11x0_dma_dev *d = (struct sa11x0_dma_dev *)arg;
+	struct sa11x0_dma_dev *d = from_tasklet(d, t, task);
 	struct sa11x0_dma_phy *p;
 	struct sa11x0_dma_chan *c;
 	unsigned pch, pch_alloc = 0;
···
 		goto err_ioremap;
 	}
 
-	tasklet_init(&d->task, sa11x0_dma_tasklet, (unsigned long)d);
+	tasklet_setup(&d->task, sa11x0_dma_tasklet);
 
 	for (i = 0; i < NR_PHY_CHAN; i++) {
 		struct sa11x0_dma_phy *p = &d->phy[i];