Since the commit to have an allocated list of virtual descriptors was
reverted, the pxa_dma driver is broken, as it assumes the descriptor is
placed on the allocated list upon allocation.
Fix the issue in pxa_dma by making an allocated virtual descriptor a
singleton.
Fixes: 8c8fe97b2b8a ("Revert "dmaengine: virt-dma: don't always free descriptor upon completion"")
Signed-off-by: Robert Jarzmik <robert.jarzmik@xxxxxxx>
---
Vinod, this is my fallback plan as I'm getting no answer on
https://lkml.org/lkml/2015/9/6/112. If I get no answer before v4.3-rc3,
I'll put that into the pxa tree.
---
drivers/dma/pxa_dma.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/dma/pxa_dma.c b/drivers/dma/pxa_dma.c
index 9d3458e2a366..53c05ca514f1 100644
--- a/drivers/dma/pxa_dma.c
+++ b/drivers/dma/pxa_dma.c
@@ -891,6 +891,7 @@ pxad_tx_prep(struct virt_dma_chan *vc, struct virt_dma_desc *vd,
struct dma_async_tx_descriptor *tx;
struct pxad_chan *chan = container_of(vc, struct pxad_chan, vc);
+ INIT_LIST_HEAD(&vd->node);
tx = vchan_tx_prep(vc, vd, tx_flags);
tx->tx_submit = pxad_tx_submit;
dev_dbg(&chan->vc.chan.dev->device,
--
2.1.4
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