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=-2.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 437FAC07E95 for ; Wed, 7 Jul 2021 12:52:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 267DE61C73 for ; Wed, 7 Jul 2021 12:52:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231545AbhGGMz2 (ORCPT ); Wed, 7 Jul 2021 08:55:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47102 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229757AbhGGMz1 (ORCPT ); Wed, 7 Jul 2021 08:55:27 -0400 Received: from mail-pj1-x1030.google.com (mail-pj1-x1030.google.com [IPv6:2607:f8b0:4864:20::1030]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6F2E2C061574; Wed, 7 Jul 2021 05:52:46 -0700 (PDT) Received: by mail-pj1-x1030.google.com with SMTP id b5-20020a17090a9905b029016fc06f6c5bso1561165pjp.5; Wed, 07 Jul 2021 05:52:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=uYB6y4B7ttXJD3mqpNqkRqzcO9CmDNYO1GY2p2ckyxU=; b=Ark4QFeQHfTkcPVm6YpE+D3m4DlXkOnE6Omlb4vpjElS1l4UTbKggPwUGb9uqqUWQC +Pdb2iyS8Ot7XzqM5ioj4RNUotyUY+UO2PEAF8YmR9g9ZCfjZ0oj/8g8hRIQpIPGEqnB uPzp5AMsad8AArxf0+/iMFFLJ6wcXZNZDy5WrRG2pEmi/Zzoxa2vY7S3tXgIxfN5EYB9 2atrtdbQJxTUvd/AA1kEM+5lVJ8LsXmGPzpWvQL9UAV4DdAOnxOEBse5xhVej3q9n8uA WgGi8cGFVCxENnf09xHjjVh6qHS56/fDRHQH0bA2XD3EjWTysjTNPWQmkcFfVG463SKT H88w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=uYB6y4B7ttXJD3mqpNqkRqzcO9CmDNYO1GY2p2ckyxU=; b=VHyeTefVS0AmdO+wlboxOhGXvNJ+vx+xqj+FBkAuz5tCPJPbIpxDxePRMn3B1Wd8l1 dKf4441348UfHt2BqgqbII4LbHLVa28PmDsHH1ZOcV0b1T+Fe06qH+8OrEDO5pJnP952 3lxIjjtA8K6IJsCvZj3xRIEIlBPzIuVwKPAwI1+zr9Z4DwG/ot81weZwidNOF6btgSfi PXFTyzOtUFUyUyubqdPKTXYiG9A/P0j7FgTaDBH8ZFb1c22allTj2QeDAmXyVFvV53qX 1XW5PZ0HYU/6KBFT8qJaivL5LBdpnrP3WPk+LHGu2+9GOoJWLfdTPOzM0yzK9VcdKjXw AaGA== X-Gm-Message-State: AOAM533aePJP9LuMX78aipLSce1HymnPBompJ1LFVClGs7SH24b6goEB AUOFuWePvZsNqliVHvm9fA0RvC5o5HU8BaxlXog= X-Google-Smtp-Source: ABdhPJxzPNL1Sb6yz54q3TfE3RQvCI3igey4qf7fPE97SG/jPpG9giKdufmNdwrHNmCrovED/Eu4NZe/nvdD5/9cO9A= X-Received: by 2002:a17:90a:17ad:: with SMTP id q42mr5986234pja.181.1625662365935; Wed, 07 Jul 2021 05:52:45 -0700 (PDT) MIME-Version: 1.0 References: <1625489588-26079-1-git-send-email-zheyuma97@gmail.com> In-Reply-To: From: Andy Shevchenko Date: Wed, 7 Jul 2021 15:52:07 +0300 Message-ID: Subject: Re: [PATCH v4] tty: serial: jsm: allocate queue buffer at probe time To: Jiri Slaby Cc: Zheyu Ma , Greg Kroah-Hartman , "open list:SERIAL DRIVERS" , Linux Kernel Mailing List Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jul 7, 2021 at 10:50 AM Jiri Slaby wrote: > On 05. 07. 21, 14:53, Zheyu Ma wrote: > So how it comes an interrupt came before > neo_param() in jsm_tty_open was called? If IRQ is shared we have a special debug feature to test shared IRQs on freeing IRQ stage (*). But it doesn't matter, the IRQ handler must survive at any stage after the action has been listed. *) I believe we have quite a lot of drivers that will fail that test... -- With Best Regards, Andy Shevchenko