From: Tudor Ambarus <tudor.ambarus@xxxxxxxxxxxxx>
commit f645f85ae1104f8bd882f962ac0a69a1070076dd upstream.
The method was wrong because it violated the dmaengine API. For aborted
transfers the complete callback should not be called. Fix the behavior and
do not call the complete callback on device_terminate_all.
Fixes: 808347f6a317 ("dmaengine: at_hdmac: add DMA slave transfers")
Reported-by: Peter Rosin <peda@xxxxxxxxxx>
Signed-off-by: Tudor Ambarus <tudor.ambarus@xxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/lkml/13c6c9a2-6db5-c3bf-349b-4c127ad3496a@xxxxxxxxxx/
Acked-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20221025090306.297886-1-tudor.ambarus@xxxxxxxxxxxxx
Link: https://lore.kernel.org/r/20221025090306.297886-6-tudor.ambarus@xxxxxxxxxxxxx
Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/dma/at_hdmac.c | 11 ++---------
1 file changed, 2 insertions(+), 9 deletions(-)
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -1437,11 +1437,8 @@ static int atc_terminate_all(struct dma_
struct at_dma_chan *atchan = to_at_dma_chan(chan);
struct at_dma *atdma = to_at_dma(chan->device);
int chan_id = atchan->chan_common.chan_id;
- struct at_desc *desc, *_desc;
unsigned long flags;
- LIST_HEAD(list);
-
dev_vdbg(chan2dev(chan), "%s\n", __func__);
/*
@@ -1460,15 +1457,11 @@ static int atc_terminate_all(struct dma_
cpu_relax();
/* active_list entries will end up before queued entries */
- list_splice_init(&atchan->queue, &list);
- list_splice_init(&atchan->active_list, &list);
+ list_splice_tail_init(&atchan->queue, &atchan->free_list);
+ list_splice_tail_init(&atchan->active_list, &atchan->free_list);
spin_unlock_irqrestore(&atchan->lock, flags);
- /* Flush all pending and queued descriptors */
- list_for_each_entry_safe(desc, _desc, &list, desc_node)
- atc_chain_complete(atchan, desc);
-
clear_bit(ATC_IS_PAUSED, &atchan->status);
/* if channel dedicated to cyclic operations, free it */
clear_bit(ATC_IS_CYCLIC, &atchan->status);
