linux-kernel - [PATCH 8/8] ASoC: core: suppress probe deferral errors

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Date:   Wed,  5 Jul 2023 14:30:18 +0200
From:   Johan Hovold <johan+linaro@...nel.org>
To:     Mark Brown <broonie@...nel.org>, Vinod Koul <vkoul@...nel.org>
Cc:     Bard Liao <yung-chuan.liao@...ux.intel.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Sanyog Kale <sanyog.r.kale@...el.com>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Banajit Goswami <bgoswami@...cinc.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org,
        Johan Hovold <johan+linaro@...nel.org>
Subject: [PATCH 8/8] ASoC: core: suppress probe deferral errors

Suppress probe deferral error messages when probing link components to
avoid spamming the logs, for example, if a required component has not
yet been registered:

	snd-sc8280xp sound: ASoC: failed to instantiate card -517

Note that dev_err_probe() is not used as the card can be unbound and
rebound while the underlying platform device remains bound to its
driver.

Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
---
 sound/soc/soc-core.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index b48efc3a08d2..b9cb5c4e3685 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1988,8 +1988,10 @@ static int snd_soc_bind_card(struct snd_soc_card *card)
 	/* probe all components used by DAI links on this card */
 	ret = soc_probe_link_components(card);
 	if (ret < 0) {
-		dev_err(card->dev,
-			"ASoC: failed to instantiate card %d\n", ret);
+		if (ret != -EPROBE_DEFER) {
+			dev_err(card->dev,
+				"ASoC: failed to instantiate card %d\n", ret);
+		}
 		goto probe_end;
 	}
 
-- 
2.39.3