From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 022601B0131; Mon, 9 Sep 2024 07:53:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725868433; cv=none; b=JhTVicgjUsDhB1NIpYqiHFqwXVEHgGAEYwhN352Z9Fmo6PR4EEWnGo+nLCZ+PpduuUfZdWQBkVnf4k4J35SlnkwiPkViGk9YkpJ67Z+mVRn+VLPwcUYV8z0euu5LFs4KPHw9p6X7qZ8zAlBdq798RRdw8ZEvIv3SRwbugQkJA20= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725868433; c=relaxed/simple; bh=ahLJCzH38r4amWW2OkSmwBXliEUmYNpHeiVErh4CIIo=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=agjxGij2aXL88mezbWWcTbu2UuaDfoWot7BJ1/n5O8HQFWsReqr2R7CRF+0rlYrLiLYV+dcBBBGX6xzTX9UYz6+JdMPjbt9/mKTxIRoN75MXBChJ3MyKUtc9F9m3BKJYxGij49HoFVKKOtNxh+Do7Ag/m2Kia393X5yFENutC4E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=RPm6VSh6; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="RPm6VSh6" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 05A40C4CEC5; Mon, 9 Sep 2024 07:53:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1725868432; bh=ahLJCzH38r4amWW2OkSmwBXliEUmYNpHeiVErh4CIIo=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=RPm6VSh6M/WpCkCX9Jc14cJ+kH6OlULTKpiRNukROhDXrJIP1KOw8mapxyd/cg/KS gbpD6HAg/3LY3uxdgO35x5tuqq0AVbSH2HO0CGHl3ih0qOcpSjsJSLR4ILCrp4nHWs pc5R6ghcf2w53LyW2lgb4GF9q6q1vOj1IvpiQUTo9BGm2odQz8qp+QzaK2teY8kmuj iX8azkoAhpDueJZPdB9lNLaKNB2q68KgMpYqDPgBPKVjnUrVcNIQqiOgHFT/48606r 70FCJd/Ek8RSqsgJGLq4mR+h4ajO2MowodcKyByGVE8uSyGx/ydyqHLcB8FzsLxuAr JNHbsnBmfIcnA== Message-ID: Date: Mon, 9 Sep 2024 09:53:43 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1 06/10] ASoC: loongson: Fix codec detection failure on FDT systems To: Binbin Zhou Cc: Binbin Zhou , Huacai Chen , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai , Huacai Chen , devicetree@vger.kernel.org, linux-sound@vger.kernel.org, Xuerui Wang , loongarch@lists.linux.dev References: From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 09/09/2024 09:51, Binbin Zhou wrote: >> >>> + return ret; >>> +} >>> + >>> +static int loongson_parse_codec(struct device *dev, struct device_node **dai_node, >>> + const char **dai_name) >>> +{ >>> + struct of_phandle_args args; >>> + struct device_node *codec; >>> + int ret = 0; >>> >>> codec = of_get_child_by_name(dev->of_node, "codec"); >>> - if (!codec) { >>> - dev_err(dev, "audio-codec property missing or invalid\n"); >>> + if (!codec) >> >> Hm? So you exit here and then caller does of_node_put on stack value. >> This is buggy. > > Sorry, I can not get your point, I think there is nothing that should be put. You drop reference from a pointer which is a random stack value. Best regards, Krzysztof