From f5485eb0b6eb8a3e5841cfea34a930822f7252bc Mon Sep 17 00:00:00 2001 From: Alexandre Bounine Date: Tue, 2 Aug 2016 14:06:46 -0700 Subject: [PATCH] rapidio/tsi721_dma: advance queue processing from transfer submit call Add advancing transfer queue immediately from transfer submit call. DMA performance improvement: This will start transfer without waiting for 'issue_pending' command if there is no DMA transfer in progress. Link: http://lkml.kernel.org/r/1469125134-16523-8-git-send-email-alexandre.bounine@idt.com Signed-off-by: Alexandre Bounine Cc: Matt Porter Cc: Andre van Herk Cc: Barry Wood Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rapidio/devices/tsi721_dma.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/rapidio/devices/tsi721_dma.c b/drivers/rapidio/devices/tsi721_dma.c index 13c669b..e2a4185 100644 --- a/drivers/rapidio/devices/tsi721_dma.c +++ b/drivers/rapidio/devices/tsi721_dma.c @@ -726,6 +726,7 @@ static dma_cookie_t tsi721_tx_submit(struct dma_async_tx_descriptor *txd) cookie = dma_cookie_assign(txd); desc->status = DMA_IN_PROGRESS; list_add_tail(&desc->desc_node, &bdma_chan->queue); + tsi721_advance_work(bdma_chan, NULL); spin_unlock_bh(&bdma_chan->lock); return cookie; -- 2.7.4