diff options
-rw-r--r-- | drivers/dma/sh/rcar-dmac.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c index af2f2639cec9..9dc73ac92359 100644 --- a/drivers/dma/sh/rcar-dmac.c +++ b/drivers/dma/sh/rcar-dmac.c | |||
@@ -1522,7 +1522,15 @@ static irqreturn_t rcar_dmac_isr_channel(int irq, void *dev) | |||
1522 | 1522 | ||
1523 | chcr = rcar_dmac_chan_read(chan, RCAR_DMACHCR); | 1523 | chcr = rcar_dmac_chan_read(chan, RCAR_DMACHCR); |
1524 | if (chcr & RCAR_DMACHCR_CAE) { | 1524 | if (chcr & RCAR_DMACHCR_CAE) { |
1525 | rcar_dmac_chan_halt(chan); | 1525 | struct rcar_dmac *dmac = to_rcar_dmac(chan->chan.device); |
1526 | |||
1527 | /* | ||
1528 | * We don't need to call rcar_dmac_chan_halt() | ||
1529 | * because channel is already stopped in error case. | ||
1530 | * We need to clear register and check DE bit as recovery. | ||
1531 | */ | ||
1532 | rcar_dmac_write(dmac, RCAR_DMACHCLR, 1 << chan->index); | ||
1533 | rcar_dmac_chcr_de_barrier(chan); | ||
1526 | reinit = true; | 1534 | reinit = true; |
1527 | goto spin_lock_end; | 1535 | goto spin_lock_end; |
1528 | } | 1536 | } |