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[RESEND,4/6] dma: rcar-dma: use result of updated get_residue in tx_status

Message ID 1442776262-2503-5-git-send-email-hamzahfrq.sub@gmail.com
State Superseded
Delegated to: Geert Uytterhoeven
Headers show

Commit Message

hamzahfrq.sub@gmail.com Sept. 20, 2015, 7:11 p.m. UTC
From: Muhammad Hamza Farooq <mfarooq@visteon.com>

Signed-off-by: Muhammad Hamza Farooq <mfarooq@visteon.com>
---
 drivers/dma/sh/rcar-dmac.c | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c
index 668fd2b..ce21575 100644
--- a/drivers/dma/sh/rcar-dmac.c
+++ b/drivers/dma/sh/rcar-dmac.c
@@ -1258,6 +1258,10 @@  static enum dma_status rcar_dmac_tx_status(struct dma_chan *chan,
 	residue = rcar_dmac_chan_get_residue(rchan, cookie);
 	spin_unlock_irqrestore(&rchan->lock, flags);
 
+	/* if there's no residue, the cookie is complete */
+	if (!residue)
+		return DMA_COMPLETE;
+
 	dma_set_residue(txstate, residue);
 
 	return status;