diff options
Diffstat (limited to 'sound/soc/generic/audio-graph-card.c')
| -rw-r--r-- | sound/soc/generic/audio-graph-card.c | 49 |
1 files changed, 35 insertions, 14 deletions
diff --git a/sound/soc/generic/audio-graph-card.c b/sound/soc/generic/audio-graph-card.c index 30a4e8399ec3..6007e6305735 100644 --- a/sound/soc/generic/audio-graph-card.c +++ b/sound/soc/generic/audio-graph-card.c @@ -63,6 +63,7 @@ static int graph_get_dai_id(struct device_node *ep) struct device_node *endpoint; struct of_endpoint info; int i, id; + const u32 *reg; int ret; /* use driver specified DAI ID if exist */ @@ -83,8 +84,9 @@ static int graph_get_dai_id(struct device_node *ep) return info.id; node = of_get_parent(ep); + reg = of_get_property(node, "reg", NULL); of_node_put(node); - if (of_get_property(node, "reg", NULL)) + if (reg) return info.port; } node = of_graph_get_port_parent(ep); @@ -127,6 +129,25 @@ static int asoc_simple_parse_dai(struct device_node *ep, args.args[0] = graph_get_dai_id(ep); args.args_count = (of_graph_get_endpoint_count(node) > 1); + /* + * FIXME + * + * Here, dlc->dai_name is pointer to CPU/Codec DAI name. + * If user unbinded CPU or Codec driver, but not for Sound Card, + * dlc->dai_name is keeping unbinded CPU or Codec + * driver's pointer. + * + * If user re-bind CPU or Codec driver again, ALSA SoC will try + * to rebind Card via snd_soc_try_rebind_card(), but because of + * above reason, it might can't bind Sound Card. + * Because Sound Card is pointing to released dai_name pointer. + * + * To avoid this rebind Card issue, + * 1) It needs to alloc memory to keep dai_name eventhough + * CPU or Codec driver was unbinded, or + * 2) user need to rebind Sound Card everytime + * if he unbinded CPU or Codec. + */ ret = snd_soc_get_dai_name(&args, &dlc->dai_name); if (ret < 0) return ret; @@ -208,10 +229,6 @@ static int graph_dai_link_of_dpcm(struct asoc_simple_priv *priv, dev_dbg(dev, "link_of DPCM (%pOF)\n", ep); - of_node_put(ports); - of_node_put(port); - of_node_put(node); - if (li->cpu) { int is_single_links = 0; @@ -229,17 +246,17 @@ static int graph_dai_link_of_dpcm(struct asoc_simple_priv *priv, ret = asoc_simple_parse_cpu(ep, dai_link, &is_single_links); if (ret) - return ret; + goto out_put_node; ret = asoc_simple_parse_clk_cpu(dev, ep, dai_link, dai); if (ret < 0) - return ret; + goto out_put_node; ret = asoc_simple_set_dailink_name(dev, dai_link, "fe.%s", cpus->dai_name); if (ret < 0) - return ret; + goto out_put_node; /* card->num_links includes Codec */ asoc_simple_canonicalize_cpu(dai_link, is_single_links); @@ -263,17 +280,17 @@ static int graph_dai_link_of_dpcm(struct asoc_simple_priv *priv, ret = asoc_simple_parse_codec(ep, dai_link); if (ret < 0) - return ret; + goto out_put_node; ret = asoc_simple_parse_clk_codec(dev, ep, dai_link, dai); if (ret < 0) - return ret; + goto out_put_node; ret = asoc_simple_set_dailink_name(dev, dai_link, "be.%s", codecs->dai_name); if (ret < 0) - return ret; + goto out_put_node; /* check "prefix" from top node */ snd_soc_of_parse_node_prefix(top, cconf, codecs->of_node, @@ -293,19 +310,23 @@ static int graph_dai_link_of_dpcm(struct asoc_simple_priv *priv, ret = asoc_simple_parse_tdm(ep, dai); if (ret) - return ret; + goto out_put_node; ret = asoc_simple_parse_daifmt(dev, cpu_ep, codec_ep, NULL, &dai_link->dai_fmt); if (ret < 0) - return ret; + goto out_put_node; dai_link->dpcm_playback = 1; dai_link->dpcm_capture = 1; dai_link->ops = &graph_ops; dai_link->init = asoc_simple_dai_init; - return 0; +out_put_node: + of_node_put(ports); + of_node_put(port); + of_node_put(node); + return ret; } static int graph_dai_link_of(struct asoc_simple_priv *priv, |