rcar-hpbdma: fixup channel busy check for double plane

The device busy check method is different between
single and double planes.
It will always return "busy" without this patch
if channel used as double plane.

Reviewed-by: Max Filippov <max.filippov@cogentembedded.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

diff --git a/drivers/dma/sh/rcar-hpbdma.c b/drivers/dma/sh/rcar-hpbdma.c
index 496180a6a5e57369bf1a5522c5001831208e0098..83de1dbb7505e735e30e37595dbffa005815e62c 100644 (file)
--- a/drivers/dma/sh/rcar-hpbdma.c
+++ b/drivers/dma/sh/rcar-hpbdma.c
@@ -60,6 +60,7 @@
 #define HPB_DMAE_DSTPR_DMSTP   BIT(0)
 
 /* DMA status register (DSTSR) bits */
+#define HPB_DMAE_DSTSR_DQSTS   BIT(2)
 #define HPB_DMAE_DSTSR_DMSTS   BIT(0)
 
 /* DMA common registers */
@@ -385,7 +386,10 @@ static bool hpb_dmae_channel_busy(struct shdma_chan *schan)
        struct hpb_dmae_chan *chan = to_chan(schan);
        u32 dstsr = ch_reg_read(chan, HPB_DMAE_DSTSR);
 
-       return (dstsr & HPB_DMAE_DSTSR_DMSTS) == HPB_DMAE_DSTSR_DMSTS;
+       if (chan->xfer_mode == XFER_DOUBLE)
+               return dstsr & HPB_DMAE_DSTSR_DQSTS;
+       else
+               return dstsr & HPB_DMAE_DSTSR_DMSTS;
 }
 
 static int