From 370c0446af5e3c8ddefbb753a1df84c278fff6d0 Mon Sep 17 00:00:00 2001 From: Dave Jiang Date: Wed, 20 Jul 2016 13:13:16 -0700 Subject: [PATCH] dmaengine: tegra20-apb-dma: convert callback to helper function This is in preperation of moving to a callback that provides results to the callback for the transaction. The conversion will maintain current behavior and the driver must convert to new callback mechanism at a later time in order to receive results. Signed-off-by: Dave Jiang Reviewed-by: Lars-Peter Clausen Cc: Laxman Dewangan Signed-off-by: Vinod Koul --- drivers/dma/tegra20-apb-dma.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c index 6ab9eb98588a..3722b9d8d9fe 100644 --- a/drivers/dma/tegra20-apb-dma.c +++ b/drivers/dma/tegra20-apb-dma.c @@ -655,8 +655,7 @@ static void handle_cont_sngl_cycle_dma_done(struct tegra_dma_channel *tdc, static void tegra_dma_tasklet(unsigned long data) { struct tegra_dma_channel *tdc = (struct tegra_dma_channel *)data; - dma_async_tx_callback callback = NULL; - void *callback_param = NULL; + struct dmaengine_desc_callback cb; struct tegra_dma_desc *dma_desc; unsigned long flags; int cb_count; @@ -666,13 +665,12 @@ static void tegra_dma_tasklet(unsigned long data) dma_desc = list_first_entry(&tdc->cb_desc, typeof(*dma_desc), cb_node); list_del(&dma_desc->cb_node); - callback = dma_desc->txd.callback; - callback_param = dma_desc->txd.callback_param; + dmaengine_desc_get_callback(&dma_desc->txd, &cb); cb_count = dma_desc->cb_count; dma_desc->cb_count = 0; spin_unlock_irqrestore(&tdc->lock, flags); - while (cb_count-- && callback) - callback(callback_param); + while (cb_count--) + dmaengine_desc_callback_invoke(&cb, NULL); spin_lock_irqsave(&tdc->lock, flags); } spin_unlock_irqrestore(&tdc->lock, flags); -- 2.39.5