If the client (audio) does not request interrupts for every period we can disable them. With updated audio driver stack we can play audio w/o the need to process any edma interrupts.
Signed-off-by: Peter Ujfalusi <[email protected]> --- drivers/dma/edma.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c index d5017abcf7cb..69f1f5250120 100644 --- a/drivers/dma/edma.c +++ b/drivers/dma/edma.c @@ -723,10 +723,10 @@ static struct dma_async_tx_descriptor *edma_prep_dma_cyclic( edesc->absync = ret; /* - * Enable interrupts for every period because callback - * has to be called for every period. + * Enable period interrupt only if it is requested */ - edesc->pset[i].param.opt |= TCINTEN; + if (tx_flags & DMA_PREP_INTERRUPT) + edesc->pset[i].param.opt |= TCINTEN; } /* Place the cyclic channel to highest priority queue */ -- 2.0.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
