From nobody Fri Sep 25 01:22:23 2026 Received: from cstnet.cn (smtp25.cstnet.cn [159.226.251.25]) (using TLSv1.2 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E12602DB79F; Thu, 17 Sep 2026 16:51:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.226.251.25 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789663900; cv=none; b=EfcvxHlIQs1aQumraEUfZzzJ5AXjkAo939Ef3jNsCcMGIGL1SEluyeAWGloWexayzBt5bdaWQj53u2JLZgfYfngqrZUAHrrgRWNji+nCvgGGBOxWcBPtIqr0JrFbN3PafGHR5mqNw6H7Cp1eqaFCFr1L6ojixcA1fI1Jtok7RJ8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789663900; c=relaxed/simple; bh=syyvC04pOKZpxGgq1oPwRcYuvMyyc7WD8rEDfR8kBCc=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=DZJFm27qlj9O87ojZQ6I/+/hF0RO8ylAH2EEjsDGSNp1kD6nlJzSq9B4UmRUngYB/28LLM+fWyST2izcN9ieDK9ifG6OKRDFxZY+u0I7N+cUC7g4XCPDxjSB5zllro65CNvs4qaTt7OE6OinlBcul49OHrdg68fophnMhHln45Q= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn; spf=pass smtp.mailfrom=iscas.ac.cn; arc=none smtp.client-ip=159.226.251.25 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=iscas.ac.cn Received: from dfae2b116770.home.arpa (unknown [36.110.52.2]) by APP-05 (Coremail) with SMTP id zQCowACH8z2SGqxq+9OECA--.7119S2; Fri, 18 Sep 2026 00:51:30 +0800 (CST) From: Wentao Liang To: broonie@kernel.org Cc: ckeepax@opensource.cirrus.com, krzk@kernel.org, lgirdwood@gmail.com, linux-kernel@vger.kernel.org, linux-sound@vger.kernel.org, patches@opensource.cirrus.com, perex@perex.cz, s.nawrocki@samsung.com, tiwai@suse.com, Wentao Liang , stable@vger.kernel.org Subject: [PATCH] ASoC: codecs: wm8994: Fix runtime PM leak in wm8994_mic_detect() Date: Thu, 17 Sep 2026 16:51:30 +0000 Message-Id: <20260917165130.2163278-1-vulab@iscas.ac.cn> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: zQCowACH8z2SGqxq+9OECA--.7119S2 X-Coremail-Antispam: 1UD129KBjvdXoW7XrWUtryrWw1DXFy8GF1xZrb_yoWDtrg_Wa n5Wa97Zry5KFZxKrZrKF4rZF93ZF4xC3y8tr90vrnxJa42yF4rJrn8JFs8CrW7Ww48Z3W3 ZFnI9F47AryIvjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbfAFc2x0x2IEx4CE42xK8VAvwI8IcIk0rVWrJVCq3wAFIxvE14AK wVWUJVWUGwA2ocxC64kIII0Yj41l84x0c7CEw4AK67xGY2AK021l84ACjcxK6xIIjxv20x vE14v26r4j6ryUM28EF7xvwVC0I7IYx2IY6xkF7I0E14v26r4UJVWxJr1l84ACjcxK6I8E 87Iv67AKxVWxJVW8Jr1l84ACjcxK6I8E87Iv6xkF7I0E14v26r4UJVWxJr1le2I262IYc4 CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E2Ix0cI8IcVAFwI0_ Jw0_WrylYx0Ex4A2jsIE14v26r4j6F4UMcvjeVCFs4IE7xkEbVWUJVW8JwACjcxG0xvY0x 0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lFIxGxcIEc7CjxVA2Y2ka0xkIwI1lc7Cj xVAaw2AFwI0_Jw0_GFyl42xK82IYc2Ij64vIr41l42xK82IY6x8ErcxFaVAv8VW8GFyrJr 1UJwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480 Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Jw0_GFylIxkGc2Ij64vIr41lIxAIcVC0I7 IYx2IY67AKxVWUCVW8JwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Cr0_Gr1UMIIF0xvE42xK 8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxVW8JVWxJwCI42IY6I8E87Iv6xkF7I 0E14v26r4UJVWxJrUvcSsGvfC2KfnxnUUI43ZEXa7VUbUPEDUUUUU== X-CM-SenderInfo: pyxotu46lvutnvoduhdfq/1tbiBwMNA2qr9thUTgAAs- Content-Type: text/plain; charset="utf-8" wm8994_mic_detect() resumes the component before configuring the MICBIAS pins, but the default case of the micbias switch returns -EINVAL right after taking that reference, skipping the pm_runtime_put() on the success path. This leaks a runtime PM reference on every call with an invalid micbias. Release the reference before returning -EINVAL. Fixes: f5a2cda4f1db ("ASoC: wm8994: Ensure the device is resumed in wm89xx_= mic_detect functions") Cc: stable@vger.kernel.org Signed-off-by: Wentao Liang Reviewed-by: Charles Keepax --- sound/soc/codecs/wm8994.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c index 1d64c7c42ed1..bfbb8a56b563 100644 --- a/sound/soc/codecs/wm8994.c +++ b/sound/soc/codecs/wm8994.c @@ -3535,6 +3535,7 @@ int wm8994_mic_detect(struct snd_soc_component *compo= nent, struct snd_soc_jack * break; default: dev_warn(component->dev, "Invalid MICBIAS %d\n", micbias); + pm_runtime_put(component->dev); return -EINVAL; } =20 --=20 2.34.1