[PATCH 2/4] dmaengine: rcar-dmac: warn if transfer cannot start as TE = 1

[Niklas Söderlund]

The documentation states one should make sure both DE and TE are cleared
before starting a transaction. This patch extends the current warning to
look at both DE and TE.

Based on previous work from Muhammad Hamza Farooq.

Suggested-by: Muhammad Hamza Farooq <mfar...@visteon.com>
Signed-off-by: Niklas Söderlund <niklas.soderlund+rene...@ragnatech.se>
---
 drivers/dma/sh/rcar-dmac.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c
index 791a064..7f26576 100644
--- a/drivers/dma/sh/rcar-dmac.c
+++ b/drivers/dma/sh/rcar-dmac.c
@@ -311,7 +311,7 @@ static bool rcar_dmac_chan_is_busy(struct rcar_dmac_chan 
*chan)
 {
        u32 chcr = rcar_dmac_chan_read(chan, RCAR_DMACHCR);
 
-       return (chcr & (RCAR_DMACHCR_DE | RCAR_DMACHCR_TE)) == RCAR_DMACHCR_DE;
+       return !!(chcr & (RCAR_DMACHCR_DE | RCAR_DMACHCR_TE));
 }
 
 static void rcar_dmac_chan_start_xfer(struct rcar_dmac_chan *chan)
-- 
2.8.3