From mboxrd@z Thu Jan 1 00:00:00 1970 From: hamzahfrq.sub@gmail.com Date: Tue, 29 Sep 2015 20:44:47 +0000 Subject: [PATCH v3 5/6] dma: rcar-dma: warn if transfer cannot start as TE = 1 Message-Id: <1443559488-2416-6-git-send-email-hamzahfrq.sub@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-sh@vger.kernel.org From: Muhammad Hamza Farooq Signed-off-by: Muhammad Hamza Farooq --- drivers/dma/sh/rcar-dmac.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c index 0b5a367..6eec878 100644 --- a/drivers/dma/sh/rcar-dmac.c +++ b/drivers/dma/sh/rcar-dmac.c @@ -327,7 +327,8 @@ static void rcar_dmac_chan_start_xfer(struct rcar_dmac_chan *chan) struct rcar_dmac_desc *desc = chan->desc.running; u32 chcr = desc->chcr; - WARN_ON_ONCE(rcar_dmac_chan_is_busy(chan)); + WARN_ON_ONCE(rcar_dmac_chan_is_busy(chan) || + rcar_dmac_last_tx_complete(chan)); if (chan->mid_rid >= 0) rcar_dmac_chan_write(chan, RCAR_DMARS, chan->mid_rid); -- 1.9.1