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Date:   Wed,  9 Jan 2019 14:17:07 +0530
From:   Rohit kumar <rohitkr@...eaurora.org>
To:     plai@...eaurora.org, bgoswami@...eaurora.org,
        asishb@...eaurora.org, lgirdwood@...il.com, broonie@...nel.org,
        perex@...ex.cz, tiwai@...e.com, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org, rohkumar@....qualcomm.com,
        srinivas.kandagatla@...aro.org, vinod.koul@...aro.org
Cc:     Ajit Pandey <ajitp@...eaurora.org>,
        Rohit kumar <rohitkr@...eaurora.org>
Subject: [PATCH v2] ASoC: soc-core: defer card probe until all component is added to list

From: Ajit Pandey <ajitp@...eaurora.org>

DAI component probe is not called if it is not present
in component list during sound card registration.
Check if component is available in component list for
platform and cpu dai before soundcard registration.

Signed-off-by: Ajit Pandey <ajitp@...eaurora.org>
Signed-off-by: Rohit kumar <rohitkr@...eaurora.org>
---
Changes since v1:
Moved component find logic to soc-core instead of machine driver
as suggested by Mark.

 sound/soc/soc-core.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 0462b3e..eec92f1 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1027,7 +1027,6 @@ static int snd_soc_init_platform(struct snd_soc_card *card,
 				 struct snd_soc_dai_link *dai_link)
 {
 	struct snd_soc_dai_link_component *platform = dai_link->platform;
-
 	/*
 	 * FIXME
 	 *
@@ -1129,6 +1128,14 @@ static int soc_init_dai_link(struct snd_soc_card *card,
 			link->name);
 		return -EINVAL;
 	}
+
+	/*
+	 * Defer card registartion if platform dai component is not added to
+	 * component list.
+	 */
+	if (!soc_find_component(link->platform->of_node, link->platform->name))
+		return -EPROBE_DEFER;
+
 	/*
 	 * CPU device may be specified by either name or OF node, but
 	 * can be left unspecified, and will be matched based on DAI
@@ -1140,6 +1147,14 @@ static int soc_init_dai_link(struct snd_soc_card *card,
 			link->name);
 		return -EINVAL;
 	}
+
+	/*
+	 * Defer card registartion if cpu dai component is not added to
+	 * component list.
+	 */
+	if (!soc_find_component(link->cpu_of_node, link->cpu_name))
+		return -EPROBE_DEFER;
+
 	/*
 	 * At least one of CPU DAI name or CPU device name/node must be
 	 * specified
-- 
Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc.,
is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.

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