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.f...@canonical.com>
---
 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

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