From: Peter Ujfalusi Date: Tue, 4 Oct 2011 08:09:52 +0000 (+0300) Subject: ASoC: omap-pcm: Fix the no period wakeup implementation X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b1b6cffeb71d363693d15444c79d828153a70865;p=linux-beck.git ASoC: omap-pcm: Fix the no period wakeup implementation After omap_request_dma the BLOCK_IRQ is enabled as default configuration for the channel. If we are requested for no period wakeup, we need to disable the BLOCK_IRQ in order to not receive any interrupts. Signed-off-by: Peter Ujfalusi Acked-by: Jarkko Nikula Signed-off-by: Mark Brown --- diff --git a/sound/soc/omap/omap-pcm.c b/sound/soc/omap/omap-pcm.c index 9b5c88ac35b9..5e37ec915de2 100644 --- a/sound/soc/omap/omap-pcm.c +++ b/sound/soc/omap/omap-pcm.c @@ -198,6 +198,14 @@ static int omap_pcm_prepare(struct snd_pcm_substream *substream) OMAP_DMA_LAST_IRQ | OMAP_DMA_BLOCK_IRQ); else if (!substream->runtime->no_period_wakeup) omap_enable_dma_irq(prtd->dma_ch, OMAP_DMA_FRAME_IRQ); + else { + /* + * No period wakeup: + * we need to disable BLOCK_IRQ, which is enabled by the omap + * dma core at request dma time. + */ + omap_disable_dma_irq(prtd->dma_ch, OMAP_DMA_BLOCK_IRQ); + } if (!(cpu_class_is_omap1())) { omap_set_dma_src_burst_mode(prtd->dma_ch,