[Sound-open-firmware] [PATCH] dai: cache: Make sure we only writeback the amount copied

[Liam Girdwood]

The DAI IRQ hanlder was always writing back full period size even when
less data was copied. Only writeback the amount of data copied.

Signed-off-by: Liam Girdwood <liam.r.girdwood at linux.intel.com>
---
 src/audio/dai.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/audio/dai.c b/src/audio/dai.c
index ebec519..cf8de72 100644
--- a/src/audio/dai.c
+++ b/src/audio/dai.c
@@ -103,7 +103,7 @@ static void dai_dma_cb(void *data, uint32_t type, struct dma_sg_elem *next)
 		comp_update_buffer_consume(dma_buffer, copied_size);
 
 		/* writeback buffer contents from cache */
-		dcache_writeback_region(dma_buffer->r_ptr, dd->period_bytes);
+		dcache_writeback_region(dma_buffer->r_ptr, copied_size);
 
 		/* update host position(in bytes offset) for drivers */
 		dev->position += copied_size;
@@ -498,6 +498,7 @@ static int dai_position(struct comp_dev *dev, struct sof_ipc_stream_posn *posn)
 
 	/* set stream start wallclock */
 	posn->wallclock = dd->wallclock;
+
 	return 0;
 }
 
-- 
2.11.0