Message ID | 20121119163727.GB9758@animalcreek.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
On Mon, Nov 19, 2012 at 09:37:27AM -0700, Mark A. Greer wrote: > From: "Mark A. Greer" <mgreer@animalcreek.com> > > 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 <rmk+kernel@arm.linux.org.uk> > CC: Péter Ujfalusi <peter.ujfalusi@ti.com> > Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> > --- > 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 Ping? -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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;