From patchwork Tue Apr 5 07:14:04 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 558259 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 4D42EC433F5 for ; Tue, 5 Apr 2022 07:48:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232252AbiDEHuO (ORCPT ); Tue, 5 Apr 2022 03:50:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46470 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233321AbiDEHrm (ORCPT ); Tue, 5 Apr 2022 03:47:42 -0400 Received: from sin.source.kernel.org (sin.source.kernel.org [IPv6:2604:1380:40e1:4800::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E8B3C13F97; Tue, 5 Apr 2022 00:43:54 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sin.source.kernel.org (Postfix) with ESMTPS id 54CEACE1BF0; Tue, 5 Apr 2022 07:43:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 69BC9C340EE; Tue, 5 Apr 2022 07:43:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1649144631; bh=n+BFEzwOApYau1OiRTnqO3M1ncuHVMLsMx7/cfFVaHU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=y5k68wUKq/np2ZH1R+XOOYT9FoESx6/ebvzBEwlxZqsDG+PvjHQVt/CnV9q4NzZor THzTefW2kVJv4zgjDZw4Na1y3z72CabqIUOF5c7nWMN/d52wRKmFOhO5+2u7HcLZ6z IIoF0AnTSzUjbKQg69Bs7CGSbafoMb79ULcuKYTc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Mohan Kumar , Takashi Iwai Subject: [PATCH 5.17 0097/1126] ALSA: hda: Avoid unsol event during RPM suspending Date: Tue, 5 Apr 2022 09:14:04 +0200 Message-Id: <20220405070410.416023633@linuxfoundation.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220405070407.513532867@linuxfoundation.org> References: <20220405070407.513532867@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Mohan Kumar commit 6ddc2f749621d5d45ca03edc9f0616bcda136d29 upstream. There is a corner case with unsol event handling during codec runtime suspending state. When the codec runtime suspend call initiated, the codec->in_pm atomic variable would be 0, currently the codec runtime suspend function calls snd_hdac_enter_pm() which will just increments the codec->in_pm atomic variable. Consider unsol event happened just after this step and before snd_hdac_leave_pm() in the codec runtime suspend function. The snd_hdac_power_up_pm() in the unsol event flow in hdmi_present_sense_via_verbs() function would just increment the codec->in_pm atomic variable without calling pm_runtime_get_sync function. As codec runtime suspend flow is already in progress and in parallel unsol event is also accessing the codec verbs, as soon as codec suspend flow completes and clocks are switched off before completing the unsol event handling as both functions doesn't wait for each other. This will result in below errors [ 589.428020] tegra-hda 3510000.hda: azx_get_response timeout, switching to polling mode: last cmd=0x505f2f57 [ 589.428344] tegra-hda 3510000.hda: spurious response 0x80000074:0x5, last cmd=0x505f2f57 [ 589.428547] tegra-hda 3510000.hda: spurious response 0x80000065:0x5, last cmd=0x505f2f57 To avoid this, the unsol event flow should not perform any codec verb related operations during RPM_SUSPENDING state. Signed-off-by: Mohan Kumar Cc: Link: https://lore.kernel.org/r/20220329155940.26331-1-mkumard@nvidia.com Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman --- sound/pci/hda/patch_hdmi.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1617,6 +1617,7 @@ static void hdmi_present_sense_via_verbs struct hda_codec *codec = per_pin->codec; struct hdmi_spec *spec = codec->spec; struct hdmi_eld *eld = &spec->temp_eld; + struct device *dev = hda_codec_dev(codec); hda_nid_t pin_nid = per_pin->pin_nid; int dev_id = per_pin->dev_id; /* @@ -1630,8 +1631,13 @@ static void hdmi_present_sense_via_verbs int present; int ret; +#ifdef CONFIG_PM + if (dev->power.runtime_status == RPM_SUSPENDING) + return; +#endif + ret = snd_hda_power_up_pm(codec); - if (ret < 0 && pm_runtime_suspended(hda_codec_dev(codec))) + if (ret < 0 && pm_runtime_suspended(dev)) goto out; present = snd_hda_jack_pin_sense(codec, pin_nid, dev_id);