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[211.23.39.77]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2d0a9f8fc8csm15721095ad.15.2026.08.05.00.55.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 05 Aug 2026 00:55:49 -0700 (PDT) From: LiangCheng Wang Date: Wed, 05 Aug 2026 15:55:43 +0800 Subject: [PATCH] ASoC: fsl-asoc-card: defer probe when the CPU DAI device is not ready Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260805-fsl-asoc-defer-cpu-dai-v1-1-43f7f538e384@gmail.com> X-B4-Tracking: v=1; b=H4sIAH7scmoC/x3MSQqAMAxA0atI1gbqUKeriIvaphoQlQZFkN7d4 vIt/n9BKDAJDNkLgW4WPvaEIs/ArmZfCNklQ6nKRnVKo5cNjRwWHXkKaM8LnWHsZ11T13rtVAU pPgN5fv7xOMX4AcLdSt1oAAAA X-Change-ID: 20260805-fsl-asoc-defer-cpu-dai-9b54e87f5d03 To: Shengjiu Wang , Xiubo Li , Fabio Estevam , Nicolin Chen , Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai Cc: Mark Brown , linux-sound@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, Wig Cheng , LiangCheng Wang X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1785916546; l=1593; i=zaq14760@gmail.com; h=from:subject:message-id; bh=m1v76Ag+Fp0S33OQgA4ftyBRk7je3Dir+slUcySG738=; b=MsFHsJDqkEdPoHI6b3SB9AdaBRM1iziM7cEjo6ZAz/pZg6LSeBVgxuR9qdTF4W1PUTZX61fIg nLAnfBL/cC9B8OweVgjJiqWzLAO9HbmVJbj2KAUV1m8dM98x8K5/g64 X-Developer-Key: i=zaq14760@gmail.com; a=ed25519; pk=5IaLhzvMqasgGPT47dsa8HEpfb0/Dv2BZC0TzSLj6E0= fsl_asoc_card_probe() hard-fails with -EINVAL when the CPU DAI (SAI) platform device is not found. Like the codec, the CPU DAI may just be probed later than the machine driver; the order is not guaranteed and varies across kernel versions, so a permanent -EINVAL leaves the card unregistered with no analog playback or capture. Defer probe instead, mirroring commit e396dec46c56 ("ASoC: fsl-asoc-card: Defer probe when fail to find codec device"). Tested on i.MX8MP with an ALC5672 on SAI3: the card that failed to register on v6.18 now comes up during boot. Fixes: 708b4351f08c ("ASoC: fsl: Add Freescale Generic ASoC Sound Card with= ASRC support") Signed-off-by: LiangCheng Wang --- sound/soc/fsl/fsl-asoc-card.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/soc/fsl/fsl-asoc-card.c b/sound/soc/fsl/fsl-asoc-card.c index 709543308fe9e9dc508a791b7125e5f467182cee..eff46666c8add604d0edbf9537e= e2d275813c1b7 100644 --- a/sound/soc/fsl/fsl-asoc-card.c +++ b/sound/soc/fsl/fsl-asoc-card.c @@ -728,8 +728,8 @@ static int fsl_asoc_card_probe(struct platform_device *= pdev) =20 cpu_pdev =3D of_find_device_by_node(cpu_np); if (!cpu_pdev) { - dev_err(&pdev->dev, "failed to find CPU DAI device\n"); - ret =3D -EINVAL; + ret =3D dev_err_probe(&pdev->dev, -EPROBE_DEFER, + "failed to find CPU DAI device\n"); goto fail; } =20 --- base-commit: a13c140cc289c0b7b3770bce5b3ad42ab35074aa change-id: 20260805-fsl-asoc-defer-cpu-dai-9b54e87f5d03 Best regards, --=20 LiangCheng Wang