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 CFDA030C360; Mon, 11 May 2026 19:56:18 +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=1778529378; cv=none; b=TLMzxGXFB9u27SjP+gyE3sGArmM3QY8vTCVbX4vPm75qpIv96RU3zsGzildtcV8gIaw/lODjf4EGFra2dJpAIBkM4pjCkKTXWFZmlwTONviNd1tjQfpzWTHtu+RiF/U5VAyW8TAjo6vfcbcT+rNt6urxGQvVPVcmn1bX78jWsE8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778529378; c=relaxed/simple; bh=93lVSHJd6NyfiSRTkX2eDf3XB5gzNVLnf/Bvh2fKnxY=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=fX9RFjxqp0n2nZRPhefgrNmD2UL1Y5YQ+2aC7LPjxazPWKjJRij7h7W+FMSuoVTFJsIAwRJ81PsNfit7IA1/OZShvJjUPNaez4pZf0vneqWAdCrdKoTSjjcvXaVLpYscirbTl7amIpcHx9Tr/b6wmsUG2u0FeURue6Mg6IVv9qY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=CykrfC3+; 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="CykrfC3+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DC5F7C2BCB0; Mon, 11 May 2026 19:56:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778529378; bh=93lVSHJd6NyfiSRTkX2eDf3XB5gzNVLnf/Bvh2fKnxY=; h=From:To:Cc:Subject:Date:From; b=CykrfC3+sRaCnDLwoKKSXf0giciFOW9XsZDEQ7nEGk2uiB74+m9pf0bx4Gl2pQNtQ 9xpUDDEvm2vx+tASC2JwJky/eqC9LvxHMWItcUeteMGKPnd1iGPSLyZPKck+6L+Oqp P46vDJnQyKLLdLO4ZTaGDPGmMaXljw6om2sd/cs/r5j7aRG18w/+72sXMSMl622j7W 0losqq39mMpdwuKiPiEyrsQiijrYhslCenWuPjG+Hgt6/fQf2DhDDn6T66LflLrFvo Z4FJFjXEFNkqU2DPKZP3LFkZ+jzCkVUX0inCeG4UujgupHGFSIsRYLmiA3yHU2aRN2 SjQGOG8EE0hsg== From: "Rafael J. Wysocki" To: Guenter Roeck Cc: linux-hwmon@vger.kernel.org, LKML , Linux ACPI , Andy Shevchenko , Linux PM , Luca Tettamanti Subject: [PATCH v1] hwmon: (asus_atk0110) Check ACPI_COMPANION() against NULL Date: Mon, 11 May 2026 21:56:14 +0200 Message-ID: <2261594.irdbgypaU6@rafael.j.wysocki> Organization: Linux Kernel Development Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="UTF-8" From: "Rafael J. Wysocki" Every platform driver can be forced to match a device that doesn't match its list of device IDs because of device_match_driver_override(), so platform drivers that rely on the existence of a device's ACPI companion object need to verify its presence. Accordingly, add a requisite ACPI_HANDLE() check against NULL to the asus_atk0110 hwmon driver. Fixes: ee1752590733 ("hwmon: (asus_atk0110) Convert ACPI driver to a platform one") Signed-off-by: Rafael J. Wysocki --- drivers/hwmon/asus_atk0110.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) --- a/drivers/hwmon/asus_atk0110.c +++ b/drivers/hwmon/asus_atk0110.c @@ -1273,15 +1273,20 @@ static int atk_probe(struct platform_dev struct acpi_buffer buf; union acpi_object *obj; struct atk_data *data; + acpi_handle handle; dev_dbg(&pdev->dev, "adding...\n"); + handle = ACPI_HANDLE(&pdev->dev); + if (!handle) + return -ENODEV; + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); if (!data) return -ENOMEM; data->dev = &pdev->dev; - data->atk_handle = ACPI_HANDLE(&pdev->dev); + data->atk_handle = handle; INIT_LIST_HEAD(&data->sensor_list); data->disable_ec = false;