From: hamzahfrq.sub@gmail.com
To: linux-sh@vger.kernel.org
Subject: [RESEND PATCH 5/6] dma: rcar-dma: warn if transfer cannot start as TE = 1
Date: Sun, 20 Sep 2015 19:11:01 +0000 [thread overview]
Message-ID: <1442776262-2503-6-git-send-email-hamzahfrq.sub@gmail.com> (raw)
From: Muhammad Hamza Farooq <mfarooq@visteon.com>
Signed-off-by: Muhammad Hamza Farooq <mfarooq@visteon.com>
---
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 ce21575..d007351 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
reply other threads:[~2015-09-20 19:11 UTC|newest]
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