ath11k: 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 <romain.perier@gmail.com>
Signed-off-by: Allen Pais <apais@linux.microsoft.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20201007103309.363737-4-allen.lkml@gmail.com

drivers/net/wireless/ath/ath11k/pci.c

@@ -380,9 +380,9 @@ static void ath11k_pci_sync_ce_irqs(struct ath11k_base *ab)
 	}
 }
 
-static void ath11k_pci_ce_tasklet(unsigned long data)
+static void ath11k_pci_ce_tasklet(struct tasklet_struct *t)
 {
-	struct ath11k_ce_pipe *ce_pipe = (struct ath11k_ce_pipe *)data;
+	struct ath11k_ce_pipe *ce_pipe = from_tasklet(ce_pipe, t, intr_tq);
 
 	ath11k_ce_per_engine_service(ce_pipe->ab, ce_pipe->pipe_num);
 
@@ -581,8 +581,7 @@ static int ath11k_pci_config_irq(struct ath11k_base *ab)
 
 		irq_idx = ATH11K_PCI_IRQ_CE0_OFFSET + i;
 
-		tasklet_init(&ce_pipe->intr_tq, ath11k_pci_ce_tasklet,
-			     (unsigned long)ce_pipe);
+		tasklet_setup(&ce_pipe->intr_tq, ath11k_pci_ce_tasklet);
 
 		ret = request_irq(irq, ath11k_pci_ce_interrupt_handler,
 				  IRQF_SHARED, irq_name[irq_idx],