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 06AE91FDE01; Sat, 18 Oct 2025 17:24:30 +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=1760808271; cv=none; b=f3DKAfIJhTXbOPelA4mgsv6ji+emZC6ouUX/mGhlV4uvCo4hVyWExSMjJtwKDZ3oj5rWJKixhyejfs1dkodP3anGDEEIP3vlbLr+0E/Fcxe74WebxXbFJaK/3DIBR5lUeFHJfyoZVK6XK99zlK4xeM4GJqPxm2VySeV+EAZPfOo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760808271; c=relaxed/simple; bh=KsqONM8Uey1/4uUZWdJNiRLzHIhnk7XWl6ndenefG6w=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=KlgC1O43rOYknL0iX+fZfiqlI0/gEVhgHG8rMQkm4h9taUK34kb3GL5F594YJFZ9cehK6502CffvQYc2LRkbIDl3ow7KOjvsTD6SYAxdkmZPcCW+SInnLcTT1rj+Qt546rfSWv09WUZlJsAs3jdjv+Yqb757h/wzpi4omQrIcTc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=XSYF+3Uu; 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="XSYF+3Uu" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2775DC4CEF8; Sat, 18 Oct 2025 17:24:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1760808270; bh=KsqONM8Uey1/4uUZWdJNiRLzHIhnk7XWl6ndenefG6w=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=XSYF+3UuVGb5fC+GZqdsaXHIFMw8IoNjc00ILmTEVTlKjL13L9ajPYzyRR7Z/RO6j lZtKin5Y35BhdK61OG+Ocopac8tCG63/nsRgNNGMYkWGnueE24MajSbhKFbCrsOdeb 1Bq66BBabq647Be3sT1XgKmA20sprHZFfRxMfakzH3sIi7Wd3tzQRwzkSvUrpeTwfg 996vz6u9rmuvtL4oyY5TmPrJREOujYPlcrxhmZHvlKWzcWylj6ETyxkKzfyuxgjo8p AoNq52J4JnI2LO+qy+fjMCLo1oYze2evLWSRLWyq3JMcgdVEFN8fvWtrJ4v7afTZME 733ZpybuREb4Q== Message-ID: <14213195-29fa-48d9-8fc4-ccdc9b6f7ecc@kernel.org> Date: Sat, 18 Oct 2025 19:24:25 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 2/3] misc: fastrpc: Add support for new DSP IOVA formatting To: Kumari Pallavi , kpallavi@qti.qualcomm.com, srini@kernel.org, amahesh@qti.qualcomm.com, arnd@arndb.de, gregkh@linuxfoundation.org Cc: quic_bkumar@quicinc.com, ekansh.gupta@oss.qualcomm.com, linux-kernel@vger.kernel.org, quic_chennak@quicinc.com, dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, jingyi.wang@oss.qualcomm.com, aiqun.yu@oss.qualcomm.com, ktadakam@qti.qualcomm.com References: <20251015045702.3022060-1-kumari.pallavi@oss.qualcomm.com> <20251015045702.3022060-3-kumari.pallavi@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 15/10/2025 06:57, Kumari Pallavi wrote: > static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev) > { > struct device *rdev = &rpdev->dev; > @@ -2291,6 +2319,22 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev) > const char *domain; > bool secure_dsp; > unsigned int vmids[FASTRPC_MAX_VMIDS]; > + struct device_node *root; > + const struct of_device_id *match; > + const struct fastrpc_soc_data *soc_data = NULL; > + > + root = of_find_node_by_path("/"); > + if (!root) > + return -ENODEV; > + > + match = of_match_node(qcom_soc_match_table, root); This is really odd way of doing things. You want to check machine, not some node. Use proper API for that. OTOH, I don't understand why you are checking machine in the first place. If your device is different, then please follow writing bindings - it explains exactly this case here. > + of_node_put(root); > + if (!match || !match->data) { > + soc_data = &default_soc_data; > + dev_dbg(rdev, "no compatible SoC found at root node\n"); > + } else { > + soc_data = match->data; > + } > Best regards, Krzysztof