diff options
| author | Chancel Liu <chancel.liu@nxp.com> | 2024-03-04 16:21:28 +0900 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2024-03-04 20:27:36 +0000 |
| commit | 755bb9a44f52dcc386c8db84d7c5a0f94ee95640 (patch) | |
| tree | 29db71c90d2f3e7cd5110a5c2594e35ef282d92e | |
| parent | 177862317a98adde284233aee074fc6e6a51cf95 (diff) | |
ASoC: soc-core.c: Prefer to return dai->driver->name in snd_soc_dai_name_get()
ASoC machine driver can use snd_soc_{of_}get_dlc() (A) to get DAI name
for dlc (snd_soc_dai_link_component). In this function call
dlc->dai_name is parsed via snd_soc_dai_name_get() (B).
(A) int snd_soc_get_dlc(...)
{
...
(B) dlc->dai_name = snd_soc_dai_name_get(dai);
...
}
(B) has a priority to return dai->name as dlc->dai_name. In most cases
card can probe successfully. However it has an issue that ASoC tries to
rebind card. Here is a simplified flow for example:
| a) Card probes successfully at first
| b) One of the component bound to this card is removed for some
| reason the component->dev is released
| c) That component is re-registered
v d) ASoC calls snd_soc_try_rebind_card()
a) points dlc->dai_name to dai->name. b) releases all resource of the
old DAI. c) creates new DAI structure. In result d) can not use
dlc->dai_name to add new created DAI.
So it's reasonable that prefer to return dai->driver->name in
snd_soc_dai_name_get() because dai->driver is a pre-defined global
variable. Also update snd_soc_is_matching_dai() for alignment.
Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
Link: https://msgid.link/r/20240304072128.2845432-1-chancel.liu@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | sound/soc/soc-core.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 507cd3015ff4..1e94edba12eb 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -283,13 +283,13 @@ static int snd_soc_is_matching_dai(const struct snd_soc_dai_link_component *dlc, /* see snd_soc_dai_name_get() */ - if (strcmp(dlc->dai_name, dai->name) == 0) - return 1; - if (dai->driver->name && strcmp(dlc->dai_name, dai->driver->name) == 0) return 1; + if (strcmp(dlc->dai_name, dai->name) == 0) + return 1; + if (dai->component->name && strcmp(dlc->dai_name, dai->component->name) == 0) return 1; @@ -300,12 +300,12 @@ static int snd_soc_is_matching_dai(const struct snd_soc_dai_link_component *dlc, const char *snd_soc_dai_name_get(struct snd_soc_dai *dai) { /* see snd_soc_is_matching_dai() */ - if (dai->name) - return dai->name; - if (dai->driver->name) return dai->driver->name; + if (dai->name) + return dai->name; + if (dai->component->name) return dai->component->name; |