From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C62D5C433EF for ; Wed, 24 Nov 2021 07:28:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241021AbhKXHbL (ORCPT ); Wed, 24 Nov 2021 02:31:11 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:41246 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233172AbhKXHbJ (ORCPT ); Wed, 24 Nov 2021 02:31:09 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1637738879; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=7OMKb/dKyQjD+7Ebuijop8gviQ0xaO52iurY6HFF7Ms=; b=iO1+v94mNylZmgixiiLOgVtReL0FM/QM7jlI+jNAojIazL5Y49gRRmHQaV9ZzQ/8EpvTtT YSSVp/XM2ZO9LCT/oOQ1Cqtt1vK0hGsgxJN/G1e/xEDH5BZTiywl5kfNmXGvRaiUzP+QJu aoYNBZqd3YagolwL77E/TTAt3ImyXu4= Received: from mail-wm1-f70.google.com (mail-wm1-f70.google.com [209.85.128.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-414-C62exlaCMWiKcIZ8gN4oMQ-1; Wed, 24 Nov 2021 02:27:58 -0500 X-MC-Unique: C62exlaCMWiKcIZ8gN4oMQ-1 Received: by mail-wm1-f70.google.com with SMTP id y141-20020a1c7d93000000b0033c2ae3583fso872106wmc.5 for ; Tue, 23 Nov 2021 23:27:57 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=7OMKb/dKyQjD+7Ebuijop8gviQ0xaO52iurY6HFF7Ms=; b=06fyK28WPVhN7uI0quV4p4v6WaCdMaT0bfkrEar6rcPe+da1RzIgwAvpJqv3r75gAc X32pSsJkuhl/8GOdodBn9pZ9Du+nJ4lWyMPj/0qDVFKoYFVoysxgR4PG3+G6M6r7Q9uv VzajxK6zLMBYCL2ufnby1qXhgq5aH5wlE+Wc6IbzUrYDXThXcGKvvJNdx935BqB8UEdJ v28guS85CZ168ot2kmngmUq3SefYShQ12H9WGTVPaij7QNeSPNNMQmFKWCe0mnX9k7dc m4uRZZdfe/qLMK/MR5yTqxxmNv0ieytS5LMVdFtr5nqRr70aG8mSCsFgyUr8Eo0O33pm 1qyg== X-Gm-Message-State: AOAM532A99paz1kABmGq89E5hvL+XMWNE6L7rShDFb+qC7vRNWVT0F/H t2wrA+n3HD3RQ0blXzDqVaAT8cc1qAFHfMVdHO0bV0t83uIWFxTOh7/u5oudUcrC4Bs5ojcFOS1 jt3RgYqWGJMrixgB9iApkGf1h X-Received: by 2002:a05:600c:896:: with SMTP id l22mr12220761wmp.127.1637738876726; Tue, 23 Nov 2021 23:27:56 -0800 (PST) X-Google-Smtp-Source: ABdhPJxKOF81PKuYHScyvKNeh2HR3n1yW8CNky/HtkVkC3Rw5qTxlFr0FyufIKB0etRC53vcTyWsTw== X-Received: by 2002:a05:600c:896:: with SMTP id l22mr12220733wmp.127.1637738876497; Tue, 23 Nov 2021 23:27:56 -0800 (PST) Received: from [192.168.1.102] ([92.176.231.205]) by smtp.gmail.com with ESMTPSA id t17sm446705wmq.15.2021.11.23.23.27.55 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 23 Nov 2021 23:27:56 -0800 (PST) Message-ID: <10d86e45-67fa-a361-db74-468c1cc686fb@redhat.com> Date: Wed, 24 Nov 2021 08:27:55 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.3.0 Subject: Re: [PATCH] spidev: Make probe to fail early if a spidev compatible is used Content-Language: en-US To: Mark Brown Cc: =?UTF-8?Q?Uwe_Kleine-K=c3=b6nig?= , linux-spi@vger.kernel.org, kernel@pengutronix.de, linux-kernel@vger.kernel.org References: <20211109225920.1158920-1-javierm@redhat.com> <20211110074247.g7eaq2z27bwdt4m5@pengutronix.de> <20211119074015.kji2hzarevxgfl5l@pengutronix.de> <9b41eb05-a095-39af-8b76-a73fa2532e92@redhat.com> From: Javier Martinez Canillas In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello Mark, On 11/23/21 15:55, Mark Brown wrote: > On Fri, Nov 19, 2021 at 09:32:32AM +0100, Javier Martinez Canillas wrote: >> On 11/19/21 08:40, Uwe Kleine-König wrote: > >>> Not this affects also devices that use > >>> compatible = "myvender,devicename", "spidev"; > >> This is indeed a corner case and I'm less sure what the kernel should do >> about it. I just learned now that of_device_is_compatible() return value > > TBH I feel like that falls into the same bucket as any other uses of > spidev so I'm not overly worried. Grepping around it looks like we have > no examples of this in tree, only a few plain spidevs in DTs for older > platforms that were most likely converted from board files and *probably* > aren't too relevant at this point. > Agreed. >> Or just consider DT nodes with a general "spidev" compatible string to >> also not be valid. I would lean towards this one I think. > > Yes, I think so. Your other options are worth exploring if it turns out > to be an issue but hopefully it's not. > I think that's a good plan. Best regards, -- Javier Martinez Canillas Linux Engineering Red Hat