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ASoC: rsnd: dma.c: spin lock is no longer needed in IRQ handler

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DMA handler had needed to calculate pointer before, but it doesn't
need now. Thus, we can remove unnecessary spin lock from DMAC handler.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kuninori Morimoto 2017-11-29 03:08:35 +00:00 committed by Mark Brown
parent b2fb31bb74
commit 65bedda1fe
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1 changed files with 0 additions and 18 deletions
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18
sound/soc/sh/rcar/dma.c
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@ -71,25 +71,7 @@ static struct rsnd_mod mem = {
static void __rsnd_dmaen_complete(struct rsnd_mod *mod,
struct rsnd_dai_stream *io)
{
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
bool elapsed = false;
unsigned long flags;
/*
* Renesas sound Gen1 needs 1 DMAC,
* Gen2 needs 2 DMAC.
* In Gen2 case, it are Audio-DMAC, and Audio-DMAC-peri-peri.
* But, Audio-DMAC-peri-peri doesn't have interrupt,
* and this driver is assuming that here.
*/
spin_lock_irqsave(&priv->lock, flags);
if (rsnd_io_is_working(io))
elapsed = true;
spin_unlock_irqrestore(&priv->lock, flags);
if (elapsed)
rsnd_dai_period_elapsed(io);
}