From 09d5b702b0f97dd0768dade7106b6bf7622b1355 Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Thu, 6 Jun 2019 13:45:47 +0300 Subject: dmaengine: virt-dma: store result on dma descriptor This allows each virtual channel to store information about each transfer that completed, i.e. which transfer succeeded (or which failed) and if there was any residue data on each (completed) transfer. Signed-off-by: Alexandru Ardelean Signed-off-by: Vinod Koul --- drivers/dma/virt-dma.c | 4 ++-- drivers/dma/virt-dma.h | 4 ++++ 2 files changed, 6 insertions(+), 2 deletions(-) (limited to 'drivers/dma') diff --git a/drivers/dma/virt-dma.c b/drivers/dma/virt-dma.c index 88ad8ed2a8d6..bf560a20c8a8 100644 --- a/drivers/dma/virt-dma.c +++ b/drivers/dma/virt-dma.c @@ -101,7 +101,7 @@ static void vchan_complete(unsigned long arg) } spin_unlock_irq(&vc->lock); - dmaengine_desc_callback_invoke(&cb, NULL); + dmaengine_desc_callback_invoke(&cb, &vd->tx_result); list_for_each_entry_safe(vd, _vd, &head, node) { dmaengine_desc_get_callback(&vd->tx, &cb); @@ -109,7 +109,7 @@ static void vchan_complete(unsigned long arg) list_del(&vd->node); vchan_vdesc_fini(vd); - dmaengine_desc_callback_invoke(&cb, NULL); + dmaengine_desc_callback_invoke(&cb, &vd->tx_result); } } diff --git a/drivers/dma/virt-dma.h b/drivers/dma/virt-dma.h index b09b75ab0751..eb767c583b7e 100644 --- a/drivers/dma/virt-dma.h +++ b/drivers/dma/virt-dma.h @@ -17,6 +17,7 @@ struct virt_dma_desc { struct dma_async_tx_descriptor tx; + struct dmaengine_result tx_result; /* protected by vc.lock */ struct list_head node; }; @@ -65,6 +66,9 @@ static inline struct dma_async_tx_descriptor *vchan_tx_prep(struct virt_dma_chan vd->tx.tx_submit = vchan_tx_submit; vd->tx.desc_free = vchan_tx_desc_free; + vd->tx_result.result = DMA_TRANS_NOERROR; + vd->tx_result.residue = 0; + spin_lock_irqsave(&vc->lock, flags); list_add_tail(&vd->node, &vc->desc_allocated); spin_unlock_irqrestore(&vc->lock, flags); -- cgit v1.2.3-55-g7522