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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E1334C4332F for ; Mon, 8 Nov 2021 16:28:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CAB2761378 for ; Mon, 8 Nov 2021 16:28:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241271AbhKHQbS (ORCPT ); Mon, 8 Nov 2021 11:31:18 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40154 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236934AbhKHQbF (ORCPT ); Mon, 8 Nov 2021 11:31:05 -0500 Received: from mail-pf1-x42b.google.com (mail-pf1-x42b.google.com [IPv6:2607:f8b0:4864:20::42b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 85D56C061570; Mon, 8 Nov 2021 08:28:21 -0800 (PST) Received: by mail-pf1-x42b.google.com with SMTP id c126so8079344pfb.0; Mon, 08 Nov 2021 08:28:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=message-id:date:mime-version:user-agent:subject:content-language:to :cc:references:from:in-reply-to:content-transfer-encoding; bh=W522cAUz1VNkkWpIk8aeKJnn1WX3utZOCRBlk8dVNxo=; b=j8QJip8KJf/J7pjefQLQ+QHjwUGyXHhZo5OosP3NxTxH4L9Tcr1neULNputik59V4U 0/w/eHRfLo6y22q6UUEEcJe3r7HB6IJuzUJa8sXmyEfF3QghNrBLk80+X7e7C2VzJMcw fGfv2K1tsl3B9efOYpcZMvUA0Mtv5OEIB+RENgHndrbUSj6LTxpkABhm/P44aNQ8R0PH vSBeHMhELaSfUN6dsp11ANnCOz8tiFUq1D49bHtQfdnvfKgJri/nPswG2CODs59gT4ne 5IDCrq2ARLdNV4kyErloFDELnjnRcQVC7JJofxspmMjv/RCHiEQUeRhNHn4VeokRt/yV jGJQ== 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=W522cAUz1VNkkWpIk8aeKJnn1WX3utZOCRBlk8dVNxo=; b=lM5O6VoKve9pWNnDgsni9IBlkMLLtkywAJQpDeZcQvvi9Zbxli8FefDColPDgsjMuS x5qe4ubBG97wbBaPNEfdYTljbdzC3YpjmfkUSd0Pb8kywESWN1Xuu3gVRDDr69KQ9NN2 b7BOwYYlLm9hX0q24AC35BAGTEHYsC5lepzfxSm6kwzBQvthAvE3p6cDd8oUrB3i+7uk xXO8pIy6qDSF6SijXOja1fREI4DJmvinj7buXibOp4Iq7WiJ11oQNrrW8wkjl3lqtF94 RpYVtq/BwlD+fOgfqghXCsl+DcFbZ+MnUmCH2d/N4cFUcLG5JxLvprtGuasZJqNvmNyg Jweg== X-Gm-Message-State: AOAM530jZkKm/FhuqJvi2xSANR2txKSQ7Dcz24CPHmTGRUu0H3WMQWMn CfUNl0yrUnmKOEHk5G/Zj8Y= X-Google-Smtp-Source: ABdhPJwYgtOPk/If8ZqeWazasT3ASjNeyFgwley+9ngPczU5N6qjaS1xCT1DRfcK8wfav40jqC8Z1g== X-Received: by 2002:a62:6184:0:b0:480:1759:b74 with SMTP id v126-20020a626184000000b0048017590b74mr390634pfb.82.1636388900985; Mon, 08 Nov 2021 08:28:20 -0800 (PST) Received: from [10.230.24.142] ([192.19.224.250]) by smtp.gmail.com with ESMTPSA id h3sm17596989pfi.207.2021.11.08.08.28.18 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 08 Nov 2021 08:28:20 -0800 (PST) Message-ID: <4d556ac3-b936-b99c-5a50-9add8607047d@gmail.com> Date: Mon, 8 Nov 2021 08:28:16 -0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.3.0 Subject: Re: [PATCH] PCI: brcmstb: Declare a bitmap as a bitmap, not as a plain 'unsigned long' Content-Language: en-US To: =?UTF-8?Q?Krzysztof_Wilczy=c5=84ski?= , Christophe JAILLET Cc: nsaenz@kernel.org, jim2101024@gmail.com, f.fainelli@gmail.com, bcm-kernel-feedback-list@broadcom.com, lorenzo.pieralisi@arm.com, robh@kernel.org, bhelgaas@google.com, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org References: From: Florian Fainelli In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/7/2021 5:34 PM, Krzysztof Wilczyński wrote: > Hi Christophe! > > [...] >> This bitmap can be BRCM_INT_PCI_MSI_LEGACY_NR or BRCM_INT_PCI_MSI_NR long. > > Ahh. OK. Given this an option would be to: do nothing (keep current > status quo); allocate memory dynamically passing the "msi->nr" after it > has been set accordingly; use BRCM_INT_PCI_MSI_NR and waste a little bit > of space. > > Perhaps moving to using the DECLARE_BITMAP() would be fine in this case > too, at least to match style of other drivers more closely. > > Jim, Florian and Lorenzo - is this something that would be OK with you, > or you would rather keep things as they were? I would be tempted to leave the code as-is, but if we do we are probably bound to seeing patches like Christophe's in the future to address the problem, unless we place a coverity specific comment in the source tree, which is probably frowned upon. The addition of the BUILD_BUG_ON() is a good addition though. -- Florian 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AC236C433F5 for ; Mon, 8 Nov 2021 16:29:38 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7B41461378 for ; Mon, 8 Nov 2021 16:29:38 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 7B41461378 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; 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Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.3.0 Subject: Re: [PATCH] PCI: brcmstb: Declare a bitmap as a bitmap, not as a plain 'unsigned long' Content-Language: en-US To: =?UTF-8?Q?Krzysztof_Wilczy=c5=84ski?= , Christophe JAILLET Cc: nsaenz@kernel.org, jim2101024@gmail.com, f.fainelli@gmail.com, bcm-kernel-feedback-list@broadcom.com, lorenzo.pieralisi@arm.com, robh@kernel.org, bhelgaas@google.com, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org References: From: Florian Fainelli In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211108_082822_270270_BF482063 X-CRM114-Status: GOOD ( 12.92 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org CgpPbiAxMS83LzIwMjEgNTozNCBQTSwgS3J6eXN6dG9mIFdpbGN6ecWEc2tpIHdyb3RlOgo+IEhp IENocmlzdG9waGUhCj4gCj4gWy4uLl0KPj4gVGhpcyBiaXRtYXAgY2FuIGJlIEJSQ01fSU5UX1BD SV9NU0lfTEVHQUNZX05SIG9yIEJSQ01fSU5UX1BDSV9NU0lfTlIgbG9uZy4KPiAKPiBBaGguICBP Sy4gIEdpdmVuIHRoaXMgYW4gb3B0aW9uIHdvdWxkIGJlIHRvOiBkbyBub3RoaW5nIChrZWVwIGN1 cnJlbnQKPiBzdGF0dXMgcXVvKTsgYWxsb2NhdGUgbWVtb3J5IGR5bmFtaWNhbGx5IHBhc3Npbmcg dGhlICJtc2ktPm5yIiBhZnRlciBpdAo+IGhhcyBiZWVuIHNldCBhY2NvcmRpbmdseTsgdXNlIEJS Q01fSU5UX1BDSV9NU0lfTlIgYW5kIHdhc3RlIGEgbGl0dGxlIGJpdAo+IG9mIHNwYWNlLgo+IAo+ IFBlcmhhcHMgbW92aW5nIHRvIHVzaW5nIHRoZSBERUNMQVJFX0JJVE1BUCgpIHdvdWxkIGJlIGZp bmUgaW4gdGhpcyBjYXNlCj4gdG9vLCBhdCBsZWFzdCB0byBtYXRjaCBzdHlsZSBvZiBvdGhlciBk cml2ZXJzIG1vcmUgY2xvc2VseS4KPiAKPiBKaW0sIEZsb3JpYW4gYW5kIExvcmVuem8gLSBpcyB0 aGlzIHNvbWV0aGluZyB0aGF0IHdvdWxkIGJlIE9LIHdpdGggeW91LAo+IG9yIHlvdSB3b3VsZCBy YXRoZXIga2VlcCB0aGluZ3MgYXMgdGhleSB3ZXJlPwoKSSB3b3VsZCBiZSB0ZW1wdGVkIHRvIGxl YXZlIHRoZSBjb2RlIGFzLWlzLCBidXQgaWYgd2UgZG8gd2UgYXJlIHByb2JhYmx5IApib3VuZCB0 byBzZWVpbmcgcGF0Y2hlcyBsaWtlIENocmlzdG9waGUncyBpbiB0aGUgZnV0dXJlIHRvIGFkZHJl c3MgdGhlIApwcm9ibGVtLCB1bmxlc3Mgd2UgcGxhY2UgYSBjb3Zlcml0eSBzcGVjaWZpYyBjb21t ZW50IGluIHRoZSBzb3VyY2UgdHJlZSwgCndoaWNoIGlzIHByb2JhYmx5IGZyb3duZWQgdXBvbi4K ClRoZSBhZGRpdGlvbiBvZiB0aGUgQlVJTERfQlVHX09OKCkgaXMgYSBnb29kIGFkZGl0aW9uIHRo b3VnaC4KLS0gCkZsb3JpYW4KCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fCmxpbnV4LWFybS1rZXJuZWwgbWFpbGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxA bGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xp c3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK