linux-kernel - [PATCH v2 3/3] ASoC: SOF: Intel: hda: Avoid checking jack on system suspend

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20210104140853.228448-3-kai.heng.feng@canonical.com>
Date:   Mon,  4 Jan 2021 22:08:52 +0800
From:   Kai-Heng Feng <kai.heng.feng@...onical.com>
To:     pierre-louis.bossart@...ux.intel.com, lgirdwood@...il.com,
        ranjani.sridharan@...ux.intel.com, kai.vehmanen@...ux.intel.com,
        daniel.baluta@....com
Cc:     Kai-Heng Feng <kai.heng.feng@...onical.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Keyon Jie <yang.jie@...ux.intel.com>,
        Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
        Marcin Rajwa <marcin.rajwa@...ux.intel.com>,
        Payal Kshirsagar <payalskshirsagar1234@...il.com>,
        sound-open-firmware@...a-project.org (moderated list:SOUND - SOUND OPEN
        FIRMWARE (SOF) DRIVERS),
        alsa-devel@...a-project.org (moderated list:SOUND - SOC LAYER / DYNAMIC
        AUDIO POWER MANAGEM...), linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v2 3/3] ASoC: SOF: Intel: hda: Avoid checking jack on system suspend

System takes a very long time to suspend after commit 215a22ed31a1
("ALSA: hda: Refactor codec PM to use direct-complete optimization"):
[   90.065964] PM: suspend entry (s2idle)
[   90.067337] Filesystems sync: 0.001 seconds
[   90.185758] Freezing user space processes ... (elapsed 0.002 seconds) done.
[   90.188713] OOM killer disabled.
[   90.188714] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
[   90.190024] printk: Suspending console(s) (use no_console_suspend to debug)
[   90.904912] intel_pch_thermal 0000:00:12.0: CPU-PCH is cool [49C], continue to suspend
[  321.262505] snd_hda_codec_realtek ehdaudio0D0: Unable to sync register 0x2b8000. -5
[  328.426919] snd_hda_codec_realtek ehdaudio0D0: Unable to sync register 0x2b8000. -5
[  329.490933] ACPI: EC: interrupt blocked

That commit keeps codec suspended during the system suspend. However,
SOF driver's runtime resume, which is for system suspend, calls
hda_codec_jack_check() and schedules jackpoll_work. The jackpoll
work uses snd_hda_power_up_pm() which tries to resume the codec in
system suspend path, hence blocking the suspend process.

So only check jack status if it's not in system PM process.

Fixes: 215a22ed31a1 ("ALSA: hda: Refactor codec PM to use direct-complete optimization")
Signed-off-by: Kai-Heng Feng <kai.heng.feng@...onical.com>
---
v2:
 No change.

 sound/soc/sof/intel/hda-dsp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/soc/sof/intel/hda-dsp.c b/sound/soc/sof/intel/hda-dsp.c
index 7d00107cf3b2..1c5e05b88a90 100644
--- a/sound/soc/sof/intel/hda-dsp.c
+++ b/sound/soc/sof/intel/hda-dsp.c
@@ -685,7 +685,8 @@ static int hda_resume(struct snd_sof_dev *sdev, bool runtime_resume)
 	/* check jack status */
 	if (runtime_resume) {
 		hda_codec_jack_wake_enable(sdev, false);
-		hda_codec_jack_check(sdev);
+		if (sdev->system_suspend_target == SOF_SUSPEND_NONE)
+			hda_codec_jack_check(sdev);
 	}
 
 	/* turn off the links that were off before suspend */
-- 
2.29.2