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

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);
}