ARM: S3C64XX: DMA: Free node for non-circular queues

We need to free the buff and lli nodes if the buffer queue is
not CIRCULAR.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/arch/arm/plat-s3c64xx/dma.c b/arch/arm/plat-s3c64xx/dma.c
index 7d12eb8fa58d..d554b936fcfb 100644
--- a/arch/arm/plat-s3c64xx/dma.c
+++ b/arch/arm/plat-s3c64xx/dma.c
@@ -610,6 +610,12 @@ static irqreturn_t s3c64xx_dma_irq(int irq, void *pw)
 
                 s3c64xx_dma_bufffdone(chan, buff, res);
 
+                /* Free the node and update curr, if non-circular queue */
+                if (!(chan->flags & S3C2410_DMAF_CIRCULAR)) {
+                        chan->curr = buff->next;
+                        s3c64xx_dma_freebuff(buff);
+                }
+
                 /* Update 'next' */
                 buff = chan->next;
                 if (chan->next == chan->end) {