diff options
Diffstat (limited to 'sound/soc/sh/rcar/dma.c')
| -rw-r--r-- | sound/soc/sh/rcar/dma.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/sound/soc/sh/rcar/dma.c b/sound/soc/sh/rcar/dma.c index 41de23417c4a..ef82b94d038b 100644 --- a/sound/soc/sh/rcar/dma.c +++ b/sound/soc/sh/rcar/dma.c @@ -253,6 +253,13 @@ static int rsnd_dmaen_attach(struct rsnd_dai_stream *io, return -EAGAIN; } + /* + * use it for IPMMU if needed + * see + * rsnd_preallocate_pages() + */ + io->dmac_dev = chan->device->dev; + dma_release_channel(chan); dmac->dmaen_num++; @@ -695,7 +702,7 @@ static int rsnd_dma_alloc(struct rsnd_dai_stream *io, struct rsnd_mod *mod, rsnd_dma_of_path(mod, io, is_play, &mod_from, &mod_to); - /* for Gen2 */ + /* for Gen2 or later */ if (mod_from && mod_to) { ops = &rsnd_dmapp_ops; attach = rsnd_dmapp_attach; @@ -773,7 +780,7 @@ int rsnd_dma_probe(struct rsnd_priv *priv) return 0; /* - * for Gen2 + * for Gen2 or later */ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "audmapp"); dmac = devm_kzalloc(dev, sizeof(*dmac), GFP_KERNEL); |