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 X-Spam-Level: X-Spam-Status: No, score=-6.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 08258C4741F for ; Mon, 28 Sep 2020 09:38:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BCC48221E8 for ; Mon, 28 Sep 2020 09:38:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="RNQZbpFD" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726709AbgI1JiA (ORCPT ); Mon, 28 Sep 2020 05:38:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51364 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726691AbgI1Jh7 (ORCPT ); Mon, 28 Sep 2020 05:37:59 -0400 Received: from mail-pf1-x441.google.com (mail-pf1-x441.google.com [IPv6:2607:f8b0:4864:20::441]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6BCCCC0613CE for ; Mon, 28 Sep 2020 02:37:59 -0700 (PDT) Received: by mail-pf1-x441.google.com with SMTP id n14so463321pff.6 for ; Mon, 28 Sep 2020 02:37:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to; bh=ZUJmPhWJIYHWvFD2F8kcv8N43U4QftiZ+PPagv543+k=; b=RNQZbpFDn56aR5appVKjCGXgwv+0pd+qTwv0esHcofY8IZsGHpT4KvCqGbkA+F9mU3 mhmeB9/BJdUzDZXleuP1RWxaZLIKXfCb5ROLAtAHnpxX239qcHRtWARFrBFnnBis9wjK OrJLoadOT4hzs9VGKiyFcFQd+qPUZH0WfLE3o= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to; bh=ZUJmPhWJIYHWvFD2F8kcv8N43U4QftiZ+PPagv543+k=; b=PfRYhWfo5Lm1OfEpXRccaQFE7djVX4z6JQ7+TCQcgvcqw1V6+3P2Mtr8dxRTAsHjRu dZ8A262pD6T5MpWWS2m6c26q7gsV6AB5hyvPEAtqUNHgmamSdT7IG+wqzvcwwkSHJEZb RpFb/j213rb66swJ+XvJm1Kaj9EwiU9fyD+QVjv0RnD5M7d/U2cVU8SCgYnTIbWF+qqR dXls0IO14YznBx+GfAiIASRHXIuaOly9zIa1R4UEm40ygchTceZwVMWYyU/rkarPUa4P xtZxLZJE6rwp7jyS3t0enG9mm3GSuCXZJe7sOI1wOt1M2ZppdXWCsijSSUcSbgkCkfKu 0tcA== X-Gm-Message-State: AOAM532zefVg/0I+h/YYQXMF4iB8mT61C1RYZh1XpDLUMDmlmjEJgz9b e7gs12L9kJs/N/oFrZvoOZOQHw== X-Google-Smtp-Source: ABdhPJyemDFL7r+2PdsUHoTKU7TMLK2rERZ9p6v5icCK3Rxv4Ba0GXXxZ0740QJWtvzp6cnN1OAshQ== X-Received: by 2002:a17:902:8c8b:b029:d2:42fe:370a with SMTP id t11-20020a1709028c8bb02900d242fe370amr761183plo.83.1601285878755; Mon, 28 Sep 2020 02:37:58 -0700 (PDT) Received: from [192.168.178.129] (f140230.upc-f.chello.nl. [80.56.140.230]) by smtp.gmail.com with ESMTPSA id ca6sm599621pjb.53.2020.09.28.02.37.47 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 28 Sep 2020 02:37:57 -0700 (PDT) Subject: Re: [patch 24/35] net: brcmfmac: Replace in_interrupt() To: Ulf Hansson Cc: Thomas Gleixner , LKML , Peter Zijlstra , Linus Torvalds , Paul McKenney , Matthew Wilcox , Sebastian Andrzej Siewior , Franky Lin , Hante Meuleman , Chi-Hsien Lin , Wright Feng , Kalle Valo , "David S. Miller" , Jakub Kicinski , linux-wireless , brcm80211-dev-list.pdl@broadcom.com, brcm80211-dev-list , netdev , Christian Benvenuti , Govindarajulu Varadarajan <_govind@gmx.com>, Jonathan Corbet , Mauro Carvalho Chehab , Linux Documentation , Luc Van Oostenryck , Jay Cliburn , Chris Snook , Vishal Kulkarni , Jeff Kirsher , intel-wired-lan@lists.osuosl.org, Shannon Nelson , Pensando Drivers , Andrew Lunn , Heiner Kallweit , Russell King , Thomas Bogendoerfer , Solarflare linux maintainers , Edward Cree , Martin Habets , Jon Mason , Daniel Drake , Ulrich Kunitz , Linux USB List , Greg Kroah-Hartman , Stanislav Yakovlev , Stanislaw Gruszka , Johannes Berg , Emmanuel Grumbach , Luca Coelho , Intel Linux Wireless , Jouni Malinen , Amitkumar Karwar , Ganapathi Bhat , Xinming Hu , libertas-dev@lists.infradead.org, Pascal Terjan , Ping-Ke Shih References: <20200927194846.045411263@linutronix.de> <20200927194922.245750969@linutronix.de> From: Arend Van Spriel Message-ID: Date: Mon, 28 Sep 2020 11:37:43 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.2.2 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="0000000000000369a805b05c6c6d" Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org --0000000000000369a805b05c6c6d Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit On 9/28/2020 11:19 AM, Ulf Hansson wrote: > On Mon, 28 Sep 2020 at 09:35, Arend Van Spriel > wrote: >> >> + Uffe >> >> On 9/27/2020 9:49 PM, Thomas Gleixner wrote: >>> @@ -85,7 +85,7 @@ static void brcmf_sdiod_ib_irqhandler(st >>> >>> brcmf_dbg(INTR, "IB intr triggered\n"); >>> >>> - brcmf_sdio_isr(sdiodev->bus); >>> + brcmf_sdio_isr(sdiodev->bus, false); >>> } >> >> Hi Uffe, >> >> I assume the above code is okay, but want to confirm. Is the SDIO >> interrupt guaranteed to be on a worker thread? > > Correct. > > As a matter of fact, the sdio irqs can be delivered through a couple > of different paths. The legacy (scheduled for removal), is from a > dedicated kthread. The more "modern" way is either from the context of > a threaded IRQ handler or via a workqueue. > > However, there are also so-called out of band SDIO irqs, typically > routed via a separate GPIO line. This isn't managed by the MMC/SDIO > subsystem, but the SDIO functional driver itself. In brcmfmac we indeed support the out-of-band interrupt. That scnenario is also taken care of in this patch. Thanks for the confirmation. Regards, Arend --0000000000000369a805b05c6c6d Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIIQTAYJKoZIhvcNAQcCoIIQPTCCEDkCAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg gg2hMIIE6DCCA9CgAwIBAgIOSBtqCRO9gCTKXSLwFPMwDQYJKoZIhvcNAQELBQAwTDEgMB4GA1UE CxMXR2xvYmFsU2lnbiBSb290IENBIC0gUjMxEzARBgNVBAoTCkdsb2JhbFNpZ24xEzARBgNVBAMT Ckdsb2JhbFNpZ24wHhcNMTYwNjE1MDAwMDAwWhcNMjQwNjE1MDAwMDAwWjBdMQswCQYDVQQGEwJC RTEZMBcGA1UEChMQR2xvYmFsU2lnbiBudi1zYTEzMDEGA1UEAxMqR2xvYmFsU2lnbiBQZXJzb25h bFNpZ24gMiBDQSAtIFNIQTI1NiAtIEczMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA tpZok2X9LAHsYqMNVL+Ly6RDkaKar7GD8rVtb9nw6tzPFnvXGeOEA4X5xh9wjx9sScVpGR5wkTg1 fgJIXTlrGESmaqXIdPRd9YQ+Yx9xRIIIPu3Jp/bpbiZBKYDJSbr/2Xago7sb9nnfSyjTSnucUcIP ZVChn6hKneVGBI2DT9yyyD3PmCEJmEzA8Y96qT83JmVH2GaPSSbCw0C+Zj1s/zqtKUbwE5zh8uuZ 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