In interleaved mode, when numf > 1, we have only one descriptor for the transfer but this descriptor has to be added to the descs_list. If not, when doing remove_xfer, the descriptor won't be put back in the free_descs_list.
Signed-off-by: Ludovic Desroches <[email protected]> --- drivers/dma/at_xdmac.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c index 3952bff..fbd4093 100644 --- a/drivers/dma/at_xdmac.c +++ b/drivers/dma/at_xdmac.c @@ -958,6 +958,10 @@ at_xdmac_prep_interleaved(struct dma_chan *chan, xt, xt->sgl); for (i = 0; i < xt->numf; i++) at_xdmac_increment_block_count(chan, first); + + dev_dbg(chan2dev(chan), "%s: add desc 0x%p to descs_list 0x%p\n", + __func__, first, first); + list_add_tail(&first->desc_node, &first->descs_list); } else { for (i = 0; i < xt->frame_size; i++) { size_t src_icg = 0, dst_icg = 0; -- 2.5.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
