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 D94001EA6F; Tue, 2 Sep 2025 19:24:05 +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=1756841046; cv=none; b=ixWBxxfumGM1FGYqkmKIJcq87dEyrULjQVMlfuezqaosXDGUEK02ZFxmaWa6bxQTaPd3B29lZtT/HOyQgkB47FIz18kdHzq7NUm7GagDlR0dHQ0wQLxVsCH1kigCpKS4mLcwBGBWSdJJr7E3ZnTQLiNMoqh6nsf49sxrF35MipM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756841046; c=relaxed/simple; bh=PrZQF7DqB4WBGDbfe5rYBm3EXfW8hqYfhzp4dywtRUc=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=thU2kRkY6ks8a+8BqAlsjEdA0nn++VbsQwloMYXL2zDnlJ7xOEgVugFgaHeMRvZWyea9ouddcUEoR6QaFz5AYD9BYp1L4dI2/2bqx03/JYmrY1HiCwgoHDVwhD2JbjE5eM055hbSYc74dyfXt2WAANulqMzu0Wf8Bh1py1Mup1Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=EXsvfV+N; 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="EXsvfV+N" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CC7A3C4CEED; Tue, 2 Sep 2025 19:24:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1756841045; bh=PrZQF7DqB4WBGDbfe5rYBm3EXfW8hqYfhzp4dywtRUc=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=EXsvfV+Ne7vgcn5U5Fc1+XxrWxVoYYaW29WTNVPML1WFeSc/1I8o2pQa7ehxasEXQ UipAW0puLRedbEhatK49RsbW5qQn/VoB871BJ98eqp7/Y2WugHv8iirge3vn6cVdvs HU04+bYBixr8aTOMI0fYgEmKzkKs9tCAcMucugNu2pB4ngBfpOAAbmIt/c8rueOj1p SBwEVwDt5sO0+iDZCSIIcatxlnqvM/bni8v7Je26DCHc/wxXJrf9FLqY7c0KjIbLgA PNzSyYTVG+j+zEyp2Kt4sqVErFYfr7ByvgObDmYgkxVVZLqG6tLeKd2WXUtoiguC+p UzmlxkYVRgIRQ== Message-ID: <893dff7a-2a31-4054-bc93-38544b1d6576@kernel.org> Date: Tue, 2 Sep 2025 21:24:00 +0200 Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] pinctrl: eswin: Fix regulator error check and Kconfig dependency To: Yulin Lu , linus.walleij@linaro.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org Cc: ningyu@eswincomputing.com, zhengyu@eswincomputing.com, linmin@eswincomputing.com, huangyifeng@eswincomputing.com, fenglin@eswincomputing.com, lianghujun@eswincomputing.com, Dan Carpenter References: <20250902094508.288-1-luyulin@eswincomputing.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 02/09/2025 11:45, Yulin Lu wrote: > Smatch reported the following warning in eic7700_pinctrl_probe(): > > drivers/pinctrl/pinctrl-eic7700.c:638 eic7700_pinctrl_probe() > warn: passing zero to 'PTR_ERR' > > The root cause is that devm_regulator_get() may return NULL when > CONFIG_REGULATOR is disabled. In such case, IS_ERR_OR_NULL() triggers > PTR_ERR(NULL) which evaluates to 0, leading to passing a success code > as an error. > > However, this driver cannot work without a regulator. To fix this: > > - Change the check from IS_ERR_OR_NULL() to IS_ERR() > - Update Kconfig to explicitly select REGULATOR and > REGULATOR_FIXED_VOLTAGE, ensuring that the regulator framework is > always available. > > This resolves the Smatch warning and enforces the correct dependency. > > Suggested-by: Dan Carpenter Wrong tag. Didn't Dan give you proper way to attribute reported? See submitting-patches. You need Reported-by with Closes. Best regards, Krzysztof