On Mon, Nov 19, 2012 at 09:37:27AM -0700, Mark A. Greer wrote: > From: "Mark A. Greer" <[email protected]> > > Enable DMA prefetching for non-cyclic DMAs by setting the > 'OMAP_DMA_DST_SYNC_PREFETCH' flag when there is a destination > synchronized DMA transfer. Prefetching is not allowed on > source synchronized DMA transfers. It is not allowed on > cyclic DMAs either since that can cause issues with some > users (e.g., suspending/resuming audio). > > CC: Russell King <[email protected]> > CC: Péter Ujfalusi <[email protected]> > Signed-off-by: Mark A. Greer <[email protected]> > --- > drivers/dma/omap-dma.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/dma/omap-dma.c b/drivers/dma/omap-dma.c > index bb2d8e7..3932eab 100644 > --- a/drivers/dma/omap-dma.c > +++ b/drivers/dma/omap-dma.c > @@ -310,7 +310,7 @@ static struct dma_async_tx_descriptor > *omap_dma_prep_slave_sg( > dev_addr = c->cfg.dst_addr; > dev_width = c->cfg.dst_addr_width; > burst = c->cfg.dst_maxburst; > - sync_type = OMAP_DMA_DST_SYNC; > + sync_type = OMAP_DMA_DST_SYNC_PREFETCH; > } else { > dev_err(chan->device->dev, "%s: bad direction?\n", __func__); > return NULL; > -- > 1.7.12
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