linux-kernel - [PATCH] ASoC: bcm: bcm63xx-pcm-whistler: Check return value of of_dma

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Message-ID: <20251202101642.492-1-vulab@iscas.ac.cn>
Date: Tue,  2 Dec 2025 18:16:42 +0800
From: Haotian Zhang <vulab@...as.ac.cn>
To: Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>
Cc: linux-sound@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Haotian Zhang <vulab@...as.ac.cn>
Subject: [PATCH] ASoC: bcm: bcm63xx-pcm-whistler: Check return value of of_dma_configure()

bcm63xx_soc_pcm_new() does not check the return value of
of_dma_configure(), which may fail with -EPROBE_DEFER or
other errors, allowing PCM setup to continue with incomplete
DMA configuration.

Add error checking for of_dma_configure() and return on failure.

Fixes: 88eb404ccc3e ("ASoC: brcm: Add DSL/PON SoC audio driver")
Signed-off-by: Haotian Zhang <vulab@...as.ac.cn>
---
 sound/soc/bcm/bcm63xx-pcm-whistler.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sound/soc/bcm/bcm63xx-pcm-whistler.c b/sound/soc/bcm/bcm63xx-pcm-whistler.c
index e3a4fcc63a56..efeb06ddabeb 100644
--- a/sound/soc/bcm/bcm63xx-pcm-whistler.c
+++ b/sound/soc/bcm/bcm63xx-pcm-whistler.c
@@ -358,7 +358,9 @@ static int bcm63xx_soc_pcm_new(struct snd_soc_component *component,
 
 	i2s_priv = dev_get_drvdata(snd_soc_rtd_to_cpu(rtd, 0)->dev);
 
-	of_dma_configure(pcm->card->dev, pcm->card->dev->of_node, 1);
+	ret = of_dma_configure(pcm->card->dev, pcm->card->dev->of_node, 1);
+	if (ret)
+		return ret;
 
 	ret = dma_coerce_mask_and_coherent(pcm->card->dev, DMA_BIT_MASK(32));
 	if (ret)
-- 
2.50.1.windows.1