[PATCH v2 11/64] dmaengine: mmp_tdma: hook completions to dma_chan BH

[Allen Pais]

Replace the per-channel tasklet with the shared dma_chan BH helper.
The handler continues to run in softirq context while dmaengine owns
the common scheduling and teardown mechanism.

Signed-off-by: Allen Pais <allen.lkml@xxxxxxxxx>
---
 drivers/dma/mmp_tdma.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c
index ba03321eeff7..d1ed2886f0e7 100644
--- a/drivers/dma/mmp_tdma.c
+++ b/drivers/dma/mmp_tdma.c
@@ -102,7 +102,6 @@ struct mmp_tdma_chan {
 	struct device			*dev;
 	struct dma_chan			chan;
 	struct dma_async_tx_descriptor	desc;
-	struct tasklet_struct		tasklet;
 
 	struct mmp_tdma_desc		*desc_arr;
 	dma_addr_t			desc_arr_phys;
@@ -320,7 +319,7 @@ static irqreturn_t mmp_tdma_chan_handler(int irq, void *dev_id)
 	struct mmp_tdma_chan *tdmac = dev_id;
 
 	if (mmp_tdma_clear_chan_irq(tdmac) == 0) {
-		tasklet_schedule(&tdmac->tasklet);
+		dma_chan_schedule_bh(&tdmac->chan);
 		return IRQ_HANDLED;
 	} else
 		return IRQ_NONE;
@@ -346,9 +345,9 @@ static irqreturn_t mmp_tdma_int_handler(int irq, void *dev_id)
 		return IRQ_NONE;
 }
 
-static void dma_do_tasklet(struct tasklet_struct *t)
+static void dma_do_tasklet(struct dma_chan *c)
 {
-	struct mmp_tdma_chan *tdmac = from_tasklet(tdmac, t, tasklet);
+	struct mmp_tdma_chan *tdmac = container_of(c, struct mmp_tdma_chan, chan);
 
 	dmaengine_desc_get_callback_invoke(&tdmac->desc, NULL);
 }
@@ -583,7 +582,7 @@ static int mmp_tdma_chan_init(struct mmp_tdma_device *tdev,
 	tdmac->pool	   = pool;
 	tdmac->status = DMA_COMPLETE;
 	tdev->tdmac[tdmac->idx] = tdmac;
-	tasklet_setup(&tdmac->tasklet, dma_do_tasklet);
+	dma_chan_init_bh(&tdmac->chan, dma_do_tasklet);
 
 	/* add the channel to tdma_chan list */
 	list_add_tail(&tdmac->chan.device_node,
-- 
2.43.0