Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18;
From:   Sasha Levin <sashal@kernel.org>
To:     linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc:     Shengjiu Wang <shengjiu.wang@nxp.com>,
        Mark Brown <broonie@kernel.org>,
        Sasha Levin <sashal@kernel.org>, lgirdwood@gmail.com,
        perex@perex.cz, tiwai@suse.com, alsa-devel@alsa-project.org
Subject: [PATCH AUTOSEL 5.16 34/59] ASoC: soc-core: skip zero num_dai component in searching dai name
Date:   Wed, 30 Mar 2022 07:48:06 -0400
Message-Id: <20220330114831.1670235-34-sashal@kernel.org>
In-Reply-To: <20220330114831.1670235-1-sashal@kernel.org>
References: <20220330114831.1670235-1-sashal@kernel.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

From: Shengjiu Wang <shengjiu.wang@nxp.com>

[ Upstream commit f7d344a2bd5ec81fbd1ce76928fd059e57ec9bea ]

In the case like dmaengine which's not a dai but as a component, the
num_dai is zero, dmaengine component has the same component_of_node
as cpu dai, when cpu dai component is not ready, but dmaengine component
is ready, try to get cpu dai name, the snd_soc_get_dai_name() return
-EINVAL, not -EPROBE_DEFER, that cause below error:

asoc-simple-card <card name>: parse error -22
asoc-simple-card: probe of <card name> failed with error -22

The sound card failed to probe.

So this patch fixes the issue above by skipping the zero num_dai
component in searching dai name.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1644491952-7457-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/soc-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index dcf6be4c4aaa..0dc89f568407 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -3184,7 +3184,7 @@ int snd_soc_get_dai_name(const struct of_phandle_args *args,
 	for_each_component(pos) {
 		struct device_node *component_of_node = soc_component_to_node(pos);
 
-		if (component_of_node != args->np)
+		if (component_of_node != args->np || !pos->num_dai)
 			continue;
 
 		ret = snd_soc_component_of_xlate_dai_name(pos, args, dai_name);
-- 
2.34.1