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b=PF4jH4upx+9ZMe+1xjfJ8F9XmIWYw5jSDOciAkm983Ld65N1KOapRq82Zl2uwfxU21gADN LecvedOoEkydk7ZLIc2LIVsbTQpqwWS09U+ByAD4eVELM8ua7EzGTqH1zoHQgPj0NpEufq 8k1pR7S5/agmXS6MjRiXkxMui7pqdes= 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-594-C5NIzWiZOM6QACV5DXixcQ-1; Sun, 27 Dec 2020 16:12:50 -0500 X-MC-Unique: C5NIzWiZOM6QACV5DXixcQ-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 0FEF91800D42; Sun, 27 Dec 2020 21:12:49 +0000 (UTC) Received: from x1.localdomain.com (ovpn-112-25.ams2.redhat.com [10.36.112.25]) by smtp.corp.redhat.com (Postfix) with ESMTP id DB27862A23; Sun, 27 Dec 2020 21:12:46 +0000 (UTC) From: Hans de Goede To: Lee Jones , MyungJoo Ham , Chanwoo Choi , Cezary Rojewski , Pierre-Louis Bossart , Liam Girdwood , Jie Yang , Mark Brown Subject: [PATCH 05/14] extcon: arizona: Fix some issues when HPDET IRQ fires after the jack has been unplugged Date: Sun, 27 Dec 2020 22:12:23 +0100 Message-Id: <20201227211232.117801-6-hdegoede@redhat.com> In-Reply-To: <20201227211232.117801-1-hdegoede@redhat.com> References: <20201227211232.117801-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Cc: Hans de Goede , alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, patches@opensource.cirrus.com X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" 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 undeseriable / 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. 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);