diff options
Diffstat (limited to 'drivers/dma/sh')
| -rw-r--r-- | drivers/dma/sh/rcar-dmac.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c index 9dc73ac92359..9906a9c7220b 100644 --- a/drivers/dma/sh/rcar-dmac.c +++ b/drivers/dma/sh/rcar-dmac.c @@ -772,8 +772,9 @@ static void rcar_dmac_sync_tcr(struct rcar_dmac_chan *chan) /* make sure all remaining data was flushed */ rcar_dmac_chcr_de_barrier(chan); - /* back DE */ - rcar_dmac_chan_write(chan, RCAR_DMACHCR, chcr); + /* back DE if remain data exists */ + if (rcar_dmac_chan_read(chan, RCAR_DMATCR)) + rcar_dmac_chan_write(chan, RCAR_DMACHCR, chcr); } static void rcar_dmac_chan_halt(struct rcar_dmac_chan *chan) |