[media] coda: drop dma_sync_single_for_device in coda_bitstream_queue

Issuing a cache flush for the whole bitstream buffer is not optimal in the first
place when only a part of it was written. But given that the buffer is mapped in
writecombine mode, it is not needed at all.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Tested-by: Ian Molton <imolton@ad-holdings.co.uk>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/platform/coda/coda-bit.c b/drivers/media/platform/coda/coda-bit.c
index d39789d59d1749d94ddc4eb5add47fdf57f36b52..d336cb66b42b9b8632e4ece2c6495935aa758866 100644 (file)
--- a/drivers/media/platform/coda/coda-bit.c
+++ b/drivers/media/platform/coda/coda-bit.c
@@ -181,10 +181,6 @@ static int coda_bitstream_queue(struct coda_ctx *ctx,
        if (n < src_size)
                return -ENOSPC;
 
-       dma_sync_single_for_device(&ctx->dev->plat_dev->dev,
-                                  ctx->bitstream.paddr, ctx->bitstream.size,
-                                  DMA_TO_DEVICE);
-
        src_buf->v4l2_buf.sequence = ctx->qsequence++;
 
        return 0;