linux-kernel - [PATCH] ASoC: sunxi: sun50i-dmic: Add missing check for devm_regmap_init

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Message-Id: <20260127033250.2044608-1-nichen@iscas.ac.cn>
Date: Tue, 27 Jan 2026 11:32:50 +0800
From: Chen Ni <nichen@...as.ac.cn>
To: fengzheng923@...il.com,
	lgirdwood@...il.com,
	broonie@...nel.org,
	perex@...ex.cz,
	tiwai@...e.com,
	wens@...nel.org,
	jernej.skrabec@...il.com,
	samuel@...lland.org
Cc: linux-sound@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-sunxi@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Chen Ni <nichen@...as.ac.cn>
Subject: [PATCH] ASoC: sunxi: sun50i-dmic: Add missing check for devm_regmap_init_mmio

Add check for the return value of devm_regmap_init_mmio() and return the
error if it fails in order to catch the error.

Signed-off-by: Chen Ni <nichen@...as.ac.cn>
---
 sound/soc/sunxi/sun50i-dmic.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/soc/sunxi/sun50i-dmic.c b/sound/soc/sunxi/sun50i-dmic.c
index bab1e29c9988..69d2478ffc95 100644
--- a/sound/soc/sunxi/sun50i-dmic.c
+++ b/sound/soc/sunxi/sun50i-dmic.c
@@ -358,6 +358,9 @@ static int sun50i_dmic_probe(struct platform_device *pdev)
 
 	host->regmap = devm_regmap_init_mmio(&pdev->dev, base,
 					     &sun50i_dmic_regmap_config);
+	if (IS_ERR(host->regmap))
+		return dev_err_probe(&pdev->dev, PTR_ERR(host->regmap),
+				     "failed to initialise regmap\n");
 
 	/* Clocks */
 	host->bus_clk = devm_clk_get(&pdev->dev, "bus");
-- 
2.25.1