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=-15.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=unavailable 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 D5198C433DB for ; Fri, 22 Jan 2021 17:02:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9EA01239D4 for ; Fri, 22 Jan 2021 17:02:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728136AbhAVRCZ (ORCPT ); Fri, 22 Jan 2021 12:02:25 -0500 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:42405 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728710AbhAVQmv (ORCPT ); Fri, 22 Jan 2021 11:42:51 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1611333683; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Plq0uVqHArj1imXTiAJxxFqxi2R/1cNns3nS6i3IABY=; b=aY8m5OTPIV8YQTE4+/PzWuWNF+5kAx4AhoWqjxSjtBTa+sm92mDj1F5fSXCULQ/105+kYH WfR+Yawixhj1IZ1qXtq3Ou5VEkvptuYyyIMbXRqe7uB8wTK7GJd0OjpBZyr4ug5utbkw1D KvbIoP5LFYnWXWQmof/eLqWdMgo+5w4= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-96-a-pD0fUXPluRTPkGcYKSCg-1; Fri, 22 Jan 2021 11:41:18 -0500 X-MC-Unique: a-pD0fUXPluRTPkGcYKSCg-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id DDD41107ACE6; Fri, 22 Jan 2021 16:41:16 +0000 (UTC) Received: from x1.localdomain (ovpn-112-174.ams2.redhat.com [10.36.112.174]) by smtp.corp.redhat.com (Postfix) with ESMTP id A5FDF6EF46; Fri, 22 Jan 2021 16:41:14 +0000 (UTC) From: Hans de Goede To: Lee Jones , Cezary Rojewski , Pierre-Louis Bossart , Liam Girdwood , Jie Yang , Mark Brown Cc: Hans de Goede , patches@opensource.cirrus.com, linux-kernel@vger.kernel.org, Andy Shevchenko , Charles Keepax , alsa-devel@alsa-project.org Subject: [PATCH v3 02/13] extcon: arizona: Fix some issues when HPDET IRQ fires after the jack has been unplugged Date: Fri, 22 Jan 2021 17:40:56 +0100 Message-Id: <20210122164107.361939-3-hdegoede@redhat.com> In-Reply-To: <20210122164107.361939-1-hdegoede@redhat.com> References: <20210122164107.361939-1-hdegoede@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When the jack is partially inserted and then removed again it may be removed while the hpdet code is running. In this case the following may happen: 1. The "JACKDET rise" or ""JACKDET fall" IRQ triggers 2. arizona_jackdet runs and takes info->lock 3. The "HPDET" IRQ triggers 4. arizona_hpdet_irq runs, blocks on info->lock 5. arizona_jackdet calls arizona_stop_mic() and clears info->hpdet_done 6. arizona_jackdet releases info->lock 7. arizona_hpdet_irq now can continue running and: 7.1 Calls arizona_start_mic() (if a mic was detected) 7.2 sets info->hpdet_done Step 7 is undesirable / a bug: 7.1 causes the device to stay in a high power-state (with MICVDD enabled) 7.2 causes hpdet to not run on the next jack insertion, which in turn causes the EXTCON_JACK_HEADPHONE state to never get set This fixes both issues by skipping these 2 steps when arizona_hpdet_irq runs after the jack has been unplugged. Reviewed-by: Andy Shevchenko Acked-by: Charles Keepax Signed-off-by: Hans de Goede --- drivers/extcon/extcon-arizona.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c index aae82db542a5..f7ef247de46a 100644 --- a/drivers/extcon/extcon-arizona.c +++ b/drivers/extcon/extcon-arizona.c @@ -601,7 +601,7 @@ static irqreturn_t arizona_hpdet_irq(int irq, void *data) struct arizona *arizona = info->arizona; int id_gpio = arizona->pdata.hpdet_id_gpio; unsigned int report = EXTCON_JACK_HEADPHONE; - int ret, reading; + int ret, reading, state; bool mic = false; mutex_lock(&info->lock); @@ -614,12 +614,11 @@ static irqreturn_t arizona_hpdet_irq(int irq, void *data) } /* If the cable was removed while measuring ignore the result */ - ret = extcon_get_state(info->edev, EXTCON_MECHANICAL); - if (ret < 0) { - dev_err(arizona->dev, "Failed to check cable state: %d\n", - ret); + state = extcon_get_state(info->edev, EXTCON_MECHANICAL); + if (state < 0) { + dev_err(arizona->dev, "Failed to check cable state: %d\n", state); goto out; - } else if (!ret) { + } else if (!state) { dev_dbg(arizona->dev, "Ignoring HPDET for removed cable\n"); goto done; } @@ -667,7 +666,7 @@ static irqreturn_t arizona_hpdet_irq(int irq, void *data) gpio_set_value_cansleep(id_gpio, 0); /* If we have a mic then reenable MICDET */ - if (mic || info->mic) + if (state && (mic || info->mic)) arizona_start_mic(info); if (info->hpdet_active) { @@ -675,7 +674,9 @@ static irqreturn_t arizona_hpdet_irq(int irq, void *data) info->hpdet_active = false; } - info->hpdet_done = true; + /* Do not set hp_det done when the cable has been unplugged */ + if (state) + info->hpdet_done = true; out: mutex_unlock(&info->lock); -- 2.28.0