Received: by 2002:a05:6a10:f347:0:0:0:0 with SMTP id d7csp5005449pxu; Tue, 22 Dec 2020 06:17:04 -0800 (PST) X-Google-Smtp-Source: ABdhPJza7JjZZOMdwOL9svmVJqZVA5e+0Hb8mEGmxx44ZM8tw/goGk0h1CLbyHOD/VhBlVDDskBF X-Received: by 2002:a05:6402:14c5:: with SMTP id f5mr20189483edx.232.1608646624216; Tue, 22 Dec 2020 06:17:04 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1608646624; cv=none; d=google.com; s=arc-20160816; b=qLbPYq5eABG/XY5cDVOVrCm44z0qu92apBRQB0RmqJzGWgNc2Zj08Vtuoo4xsMlqF/ Fdw6/IAn8qFjuPK63ApXrf+jH/vcqcqeRkBnPdFGoIuktfSs/BOI49sV2/Q8QB0n+OMg 5d7nDukmIsk/yXMmm8I9vNxebco49scGCFTJd5XEgTIy0reM4y1xcwjgnevxtks0Hlcs Ds2WXESWwUSNw8ArAZv1Qqp7LVvA5+Hkbk7RwjQOVfuf/WJNxTdAv7owfsQL2rqXFxF4 4FWrLjT7aIQouajn569B0PXC6nQz98zCq97j9ZrrmXbUoCdh1CCW2d9/8shK8VYyGiBx tLxA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:user-agent:references:in-reply-to :subject:cc:to:from:message-id:date; bh=mZlOWqXOO91yCK5HreoA9+a9s6Lk0Zulj0szGy2Egkg=; b=B9GA2OxnYnWGte87lHXvqjDQ5OvVtfaR/XviM9TPWxJBVJQKAKVthYTHog9qWCcVGo aq41KOiYvahElLB4miEXbOjehk4GJ9QZze7/brU4xpHvNzqDYq2Kgf5zCjdr8KheAse3 AoBBZ5KaRgucAXxhq4ArruxjB1zOxCb+xCvt+Y7azWRWEwKUIzCbKneBWrrbR57d7NCM nz5nVWxIFviceVIfev2z2ZmEjK/UYsPs3n9EZTKnkZxef9BVypCl5RYOjSG/+tsSHNbe 5Ql4E2iWjn4vR9+49yVhc6TaTwOUHnLWAsxisPaJeSpwF/SdErrPhJmK/EreouLBJ4cc 9EPQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id 88si12133300edr.151.2020.12.22.06.16.40; Tue, 22 Dec 2020 06:17:04 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727341AbgLVOP7 (ORCPT + 99 others); Tue, 22 Dec 2020 09:15:59 -0500 Received: from mx2.suse.de ([195.135.220.15]:52494 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727310AbgLVOP7 (ORCPT ); Tue, 22 Dec 2020 09:15:59 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id C36D4B74C; Tue, 22 Dec 2020 14:15:17 +0000 (UTC) Date: Tue, 22 Dec 2020 15:15:17 +0100 Message-ID: From: Takashi Iwai To: Ravulapati Vishnu vardhan rao Cc: , Liam Girdwood , Mark Brown , Jaroslav Kysela , "Takashi Iwai" , Akshu Agrawal , Dan Carpenter , Vijendar Mukunda , "moderated list:SOUND - SOC LAYER / DYNAMIC AUDIO POWER MANAGEM..." , open list Subject: Re: [PATCH] ASoC: amd:Replacing MSI with Legacy IRQ model In-Reply-To: <20201222115929.11222-1-Vishnuvardhanrao.Ravulapati@amd.com> References: <20201222115929.11222-1-Vishnuvardhanrao.Ravulapati@amd.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI/1.14.6 (Maruoka) FLIM/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL/10.8 Emacs/25.3 (x86_64-suse-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 22 Dec 2020 12:59:18 +0100, Ravulapati Vishnu vardhan rao wrote: > > When we try to play and capture simultaneously we see that > interrupts are genrated but our handler is not being acknowledged, > After investigating further more in detail on this issue we found > that IRQ delivery via MSI from the ACP IP is unreliable and so sometimes > interrupt generated will not be acknowledged so MSI model shouldn't be used > and using legacy IRQs will resolve interrupt handling issue. > > This patch replaces MSI interrupt handling with legacy IRQ model. > > Issue can be reproduced easily by running below python script: > > import subprocess > import time > import threading > > def do2(): > cmd = 'aplay -f dat -D hw:2,1 /dev/zero -d 1' > subprocess.call(cmd, stdin=subprocess.PIPE, > stderr=subprocess.PIPE, shell=True) > print('Play Done') > > def run(): > for i in range(1000): > do2() > > def do(i): > cmd = 'arecord -f dat -D hw:2,2 /dev/null -d 1' > subprocess.call(cmd, stdout=subprocess.PIPE, > stderr=subprocess.PIPE, shell=True) > print(datetime.datetime.now(), i) > > t = threading.Thread(target=run) > t.start() > for i in range(1000): > do(i) > > t.join() > > After applying this patch issue is resolved. > > Signed-off-by: Ravulapati Vishnu vardhan rao Is this specific to Raven, i.e. Renoir doesn't need the same fix? If so, it should be mentioned in the patch description. thanks, Takashi