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 97BEF35A123; Tue, 18 Nov 2025 11:32:22 +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=1763465542; cv=none; b=ZL9rpZwT3uhku6gJ+J/XBzDXsxjV+w2hUVHP5yN7odmvQYC3a3uWDFClzWWgT3g5C165laifw6gRBeX2I2rZ5d/15gB1NsEHFUKgtHMvwG3VYEyDbq5ll0mbk0SB1ZRqq9GrsNwp84AYyVxaXq6kjP5AsTSWxz+k159Aa50nQkA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763465542; c=relaxed/simple; bh=A9yChllo1ZD40QC3/OgevvgCNZCZ7NsMgL9U8cpUQSk=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=kjFSdEEFHQWFWnvoejZuFx9XljwgM7xj2ZDB6NhOOZ7COAksU6i6u39z0ep9xl/GQfIaJ1ex9WhW/8Mk7Jt4GzHc46hoxZ+LbhgbdYQFYuHpjzBf8pRhda6OAUbmhw/j3NOoD7ChFYmhVtO0uujkwWHrL/cJTvHGJIhbxwRljs0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=qc1PJK3u; 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="qc1PJK3u" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 76FFBC19425; Tue, 18 Nov 2025 11:32:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1763465542; bh=A9yChllo1ZD40QC3/OgevvgCNZCZ7NsMgL9U8cpUQSk=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=qc1PJK3uerTPNEpxFCiKxk4R7E1SMzH6jFTXUJewoD2oW/5XDrV2/Vc0q0a+GorDF FAeVZ5OxTUldMn7KHW4Egr0syCDveC5BTEbRpo0FQ5MEl1NOfdBnQn30hcwqL0nRoM 7o1aikDKgqD6fS3DbEVD/jhtcNrEFX7tcXVLTy4p18JgboVS0FUU7Z1xTeCNDkabZv hDuJSWpryh7f2foyDVH8+YxU3IjEGeaIaDvX6PFknAxaw69gq+QuQruvUqT2qxifOo j2sjRCOEsY9A51s6hk/ZjbIw7GGM/OHjbL19xYDKg8Ciym5h3v69eSMWd8voUCEb41 D7vZv/qqpApUw== Message-ID: Date: Tue, 18 Nov 2025 12:32:15 +0100 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 v8 1/2] firmware: qcom: scm: Register gunyah watchdog device To: Kathiravan Thirumoorthy , hrishabh.rajput@oss.qualcomm.com, Bjorn Andersson , Konrad Dybcio , Wim Van Sebroeck , Guenter Roeck , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-arm-msm@vger.kernel.org, linux-watchdog@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Pavan Kondeti , Neil Armstrong , Dmitry Baryshkov , Shivendra Pratap References: <20251118-gunyah_watchdog-v8-0-e5de12e2eef5@oss.qualcomm.com> <20251118-gunyah_watchdog-v8-1-e5de12e2eef5@oss.qualcomm.com> <88e538ee-9e70-4249-bee5-5127d344edad@oss.qualcomm.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 18/11/2025 12:18, Kathiravan Thirumoorthy wrote: > > On 11/18/2025 4:10 PM, Hrishabh Rajput via B4 Relay wrote: >> From: Hrishabh Rajput >> >> To restrict Gunyah watchdog initialization to Qualcomm platforms running >> under the Gunyah Hypervisor, register the watchdog device in the QCOM >> SCM driver. >> >> When Gunyah is not present or Gunyah emulates MMIO-based watchdog, we >> expect Qualcomm watchdog or ARM SBSA watchdog device to be present in >> the devicetree. First, we make sure we're running under the Gunyah >> Hypervisor. Then we move to check if any of the above mentioned >> watchdog device nodes are present, if not then we proceed to register >> the SMC-based Gunyah watchdog device. >> >> Reviewed-by: Dmitry Baryshkov >> Tested-by: Shivendra Pratap >> Tested-by: Neil Armstrong >> Signed-off-by: Hrishabh Rajput >> --- >> drivers/firmware/qcom/qcom_scm.c | 53 ++++++++++++++++++++++++++++++++++++++++ >> 1 file changed, 53 insertions(+) >> >> diff --git a/drivers/firmware/qcom/qcom_scm.c b/drivers/firmware/qcom/qcom_scm.c >> index e777b7cb9b12..14d0663316e6 100644 >> --- a/drivers/firmware/qcom/qcom_scm.c >> +++ b/drivers/firmware/qcom/qcom_scm.c >> @@ -2182,6 +2182,56 @@ int qcom_scm_qtee_callback_response(phys_addr_t buf, size_t buf_size, >> } >> EXPORT_SYMBOL(qcom_scm_qtee_callback_response); >> >> +static void qcom_scm_gunyah_wdt_free(void *data) >> +{ >> + struct platform_device *gunyah_wdt_dev = data; >> + >> + platform_device_unregister(gunyah_wdt_dev); >> +} >> + >> +static void qcom_scm_gunyah_wdt_init(struct qcom_scm *scm) >> +{ >> + struct platform_device *gunyah_wdt_dev; >> + struct device_node *np; > > nit: Can we use the __cleanup() attribute for device_node like below and > drop the explicit of_node_put()? > > struct device_node *np __free(device_node) = NULL; Please don't. It is not desired style, error prone and not helping. Don't use cleanup.h if you are not accustomed to its specific style. Best regards, Krzysztof