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ASoC: core: Don't defer probe on optional, NULL components 

cpu and platform are optional components in DAI links. For example
codec-codec links usually have no platform set.

Call snd_soc_find_component only if the name or of_node of
a cpu or platform is set. Otherwise it will return NULL and
soc_init_dai_link bails out immediately with -EPROBE_DEFER,
meaning registering a card with NULL cpu or platform in DAI links
can never succeed.

Fixes: 8780cf1142 ("ASoC: soc-core: defer card probe until all component is added to list")

Signed-off-by: Matthias Reichl <hias@horus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Matthias Reichl 2019-01-15 17:51:07 +01:00 committed by Mark Brown
parent 5a7b2aabc1
commit 2833548ecb
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GPG Key ID: 24D68B725D5487D0
1 changed files with 4 additions and 2 deletions
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6
sound/soc/soc-core.c
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@ -1135,7 +1135,8 @@ static int soc_init_dai_link(struct snd_soc_card *card,
* Defer card registartion if platform dai component is not added to
* component list.
*/
if (!soc_find_component(link->platform->of_node, link->platform->name))
if ((link->platform->of_node || link->platform->name) &&
!soc_find_component(link->platform->of_node, link->platform->name))
return -EPROBE_DEFER;
/*
@ -1154,7 +1155,8 @@ static int soc_init_dai_link(struct snd_soc_card *card,
* Defer card registartion if cpu dai component is not added to
* component list.
*/
if (!soc_find_component(link->cpu_of_node, link->cpu_name))
if ((link->cpu_of_node || link->cpu_name) &&
!soc_find_component(link->cpu_of_node, link->cpu_name))
return -EPROBE_DEFER;
/*