From: Kuninori Morimoto <[email protected]> Current shdma is using "last" which indicates last desc which needs to have callback function. but, that desc's chunks is always 1 We can use it as finder
Signed-off-by: Kuninori Morimoto <[email protected]> --- drivers/dma/sh/shdma-base.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/drivers/dma/sh/shdma-base.c b/drivers/dma/sh/shdma-base.c index 5239677..6786ecb 100644 --- a/drivers/dma/sh/shdma-base.c +++ b/drivers/dma/sh/shdma-base.c @@ -73,8 +73,7 @@ static void shdma_chan_xfer_ld_queue(struct shdma_chan *schan) static dma_cookie_t shdma_tx_submit(struct dma_async_tx_descriptor *tx) { struct shdma_desc *chunk, *c, *desc = - container_of(tx, struct shdma_desc, async_tx), - *last = desc; + container_of(tx, struct shdma_desc, async_tx); struct shdma_chan *schan = to_shdma_chan(tx->chan); dma_async_tx_callback callback = tx->callback; dma_cookie_t cookie; @@ -98,19 +97,20 @@ static dma_cookie_t shdma_tx_submit(struct dma_async_tx_descriptor *tx) &chunk->node == &schan->ld_free)) break; chunk->mark = DESC_SUBMITTED; - /* Callback goes to the last chunk */ - chunk->async_tx.callback = NULL; + if (chunk->chunks == 1) { + chunk->async_tx.callback = callback; + chunk->async_tx.callback_param = tx->callback_param; + } else { + /* Callback goes to the last chunk */ + chunk->async_tx.callback = NULL; + } chunk->cookie = cookie; list_move_tail(&chunk->node, &schan->ld_queue); - last = chunk; dev_dbg(schan->dev, "submit #%d@%p on %d\n", - tx->cookie, &last->async_tx, schan->id); + tx->cookie, &chunk->async_tx, schan->id); } - last->async_tx.callback = callback; - last->async_tx.callback_param = tx->callback_param; - if (power_up) { int ret; schan->pm_state = SHDMA_PM_BUSY; -- 1.7.9.5 -- 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/
