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From: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
To: alsa-devel@alsa-project.org
Cc: Takashi Iwai <tiwai@suse.de>, intel-gfx@lists.freedesktop.org
Subject: snd-hda-intel runtime PM fail after module reload
Date: Thu, 25 Feb 2016 21:19:08 +0200	[thread overview]
Message-ID: <20160225191908.GN15993@intel.com> (raw)

Hi,

My investigation into some sporadic i915 runtime PM failures seem to
point the finger at snd-hda-intel.

I just tried to play around unloding and reloading snd-hda-intel and
sometimes I get snd-hda-intel loaded with runtime PM supposedly enabled,
but actually the device won't runtime suspend. At which point frobbing
with power/control is enough to kick it back into submission.

# for i in `seq 1 3`; do sleep 1 ; grep . /sys/bus/pci/devices/0000\:00\:03.0/power/*  ; done
/sys/bus/pci/devices/0000:00:03.0/power/async:enabled
grep: /sys/bus/pci/devices/0000:00:03.0/power/autosuspend_delay_ms: Input/output error
/sys/bus/pci/devices/0000:00:03.0/power/control:auto
/sys/bus/pci/devices/0000:00:03.0/power/runtime_active_kids:0
/sys/bus/pci/devices/0000:00:03.0/power/runtime_active_time:117045
/sys/bus/pci/devices/0000:00:03.0/power/runtime_enabled:enabled
/sys/bus/pci/devices/0000:00:03.0/power/runtime_status:suspended
/sys/bus/pci/devices/0000:00:03.0/power/runtime_suspended_time:222657
/sys/bus/pci/devices/0000:00:03.0/power/runtime_usage:0
/sys/bus/pci/devices/0000:00:03.0/power/async:enabled
grep: /sys/bus/pci/devices/0000:00:03.0/power/autosuspend_delay_ms: Input/output error
/sys/bus/pci/devices/0000:00:03.0/power/control:auto
/sys/bus/pci/devices/0000:00:03.0/power/runtime_active_kids:0
/sys/bus/pci/devices/0000:00:03.0/power/runtime_active_time:117045
/sys/bus/pci/devices/0000:00:03.0/power/runtime_enabled:enabled
/sys/bus/pci/devices/0000:00:03.0/power/runtime_status:suspended
/sys/bus/pci/devices/0000:00:03.0/power/runtime_suspended_time:223666
/sys/bus/pci/devices/0000:00:03.0/power/runtime_usage:0
/sys/bus/pci/devices/0000:00:03.0/power/async:enabled
grep: /sys/bus/pci/devices/0000:00:03.0/power/autosuspend_delay_ms: Input/output error
/sys/bus/pci/devices/0000:00:03.0/power/control:auto
/sys/bus/pci/devices/0000:00:03.0/power/runtime_active_kids:0
/sys/bus/pci/devices/0000:00:03.0/power/runtime_active_time:117045
/sys/bus/pci/devices/0000:00:03.0/power/runtime_enabled:enabled
/sys/bus/pci/devices/0000:00:03.0/power/runtime_status:suspended
/sys/bus/pci/devices/0000:00:03.0/power/runtime_suspended_time:224674
/sys/bus/pci/devices/0000:00:03.0/power/runtime_usage:0
# rmmod snd-hda-intel
# modprobe snd-hda-intel
# for i in `seq 1 3`; do sleep 1 ; grep . /sys/bus/pci/devices/0000\:00\:03.0/power/*  ; done
/sys/bus/pci/devices/0000:00:03.0/power/async:enabled
grep: /sys/bus/pci/devices/0000:00:03.0/power/autosuspend_delay_ms: Input/output error
/sys/bus/pci/devices/0000:00:03.0/power/control:auto
/sys/bus/pci/devices/0000:00:03.0/power/runtime_active_kids:0
/sys/bus/pci/devices/0000:00:03.0/power/runtime_active_time:121454
/sys/bus/pci/devices/0000:00:03.0/power/runtime_enabled:enabled
/sys/bus/pci/devices/0000:00:03.0/power/runtime_status:active
/sys/bus/pci/devices/0000:00:03.0/power/runtime_suspended_time:228560
/sys/bus/pci/devices/0000:00:03.0/power/runtime_usage:0
/sys/bus/pci/devices/0000:00:03.0/power/async:enabled
grep: /sys/bus/pci/devices/0000:00:03.0/power/autosuspend_delay_ms: Input/output error
/sys/bus/pci/devices/0000:00:03.0/power/control:auto
/sys/bus/pci/devices/0000:00:03.0/power/runtime_active_kids:0
/sys/bus/pci/devices/0000:00:03.0/power/runtime_active_time:122463
/sys/bus/pci/devices/0000:00:03.0/power/runtime_enabled:enabled
/sys/bus/pci/devices/0000:00:03.0/power/runtime_status:active
/sys/bus/pci/devices/0000:00:03.0/power/runtime_suspended_time:228560
/sys/bus/pci/devices/0000:00:03.0/power/runtime_usage:0
/sys/bus/pci/devices/0000:00:03.0/power/async:enabled
grep: /sys/bus/pci/devices/0000:00:03.0/power/autosuspend_delay_ms: Input/output error
/sys/bus/pci/devices/0000:00:03.0/power/control:auto
/sys/bus/pci/devices/0000:00:03.0/power/runtime_active_kids:0
/sys/bus/pci/devices/0000:00:03.0/power/runtime_active_time:123472
/sys/bus/pci/devices/0000:00:03.0/power/runtime_enabled:enabled
/sys/bus/pci/devices/0000:00:03.0/power/runtime_status:active
/sys/bus/pci/devices/0000:00:03.0/power/runtime_suspended_time:228560
/sys/bus/pci/devices/0000:00:03.0/power/runtime_usage:0
# echo on > /sys/bus/pci/devices/0000:00:03.0/power/control
# echo auto > /sys/bus/pci/devices/0000:00:03.0/power/control
# for i in `seq 1 3`; do sleep 1 ; grep . /sys/bus/pci/devices/0000\:00\:03.0/power/*  ; done
/sys/bus/pci/devices/0000:00:03.0/power/async:enabled
grep: /sys/bus/pci/devices/0000:00:03.0/power/autosuspend_delay_ms: Input/output error
/sys/bus/pci/devices/0000:00:03.0/power/control:auto
/sys/bus/pci/devices/0000:00:03.0/power/runtime_active_kids:0
/sys/bus/pci/devices/0000:00:03.0/power/runtime_active_time:141459
/sys/bus/pci/devices/0000:00:03.0/power/runtime_enabled:enabled
/sys/bus/pci/devices/0000:00:03.0/power/runtime_status:suspended
/sys/bus/pci/devices/0000:00:03.0/power/runtime_suspended_time:231699
/sys/bus/pci/devices/0000:00:03.0/power/runtime_usage:0
/sys/bus/pci/devices/0000:00:03.0/power/async:enabled
grep: /sys/bus/pci/devices/0000:00:03.0/power/autosuspend_delay_ms: Input/output error
/sys/bus/pci/devices/0000:00:03.0/power/control:auto
/sys/bus/pci/devices/0000:00:03.0/power/runtime_active_kids:0
/sys/bus/pci/devices/0000:00:03.0/power/runtime_active_time:141459
/sys/bus/pci/devices/0000:00:03.0/power/runtime_enabled:enabled
/sys/bus/pci/devices/0000:00:03.0/power/runtime_status:suspended
/sys/bus/pci/devices/0000:00:03.0/power/runtime_suspended_time:232706
/sys/bus/pci/devices/0000:00:03.0/power/runtime_usage:0
/sys/bus/pci/devices/0000:00:03.0/power/async:enabled
grep: /sys/bus/pci/devices/0000:00:03.0/power/autosuspend_delay_ms: Input/output error
/sys/bus/pci/devices/0000:00:03.0/power/control:auto
/sys/bus/pci/devices/0000:00:03.0/power/runtime_active_kids:0
/sys/bus/pci/devices/0000:00:03.0/power/runtime_active_time:141459
/sys/bus/pci/devices/0000:00:03.0/power/runtime_enabled:enabled
/sys/bus/pci/devices/0000:00:03.0/power/runtime_status:suspended
/sys/bus/pci/devices/0000:00:03.0/power/runtime_suspended_time:233713
/sys/bus/pci/devices/0000:00:03.0/power/runtime_usage:0

-- 
Ville Syrjälä
Intel OTC
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Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

             reply	other threads:[~2016-02-25 19:19 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-25 19:19 Ville Syrjälä [this message]
2016-02-25 20:28 ` snd-hda-intel runtime PM fail after module reload Takashi Iwai
2016-02-25 21:57   ` Ville Syrjälä
2016-02-26  7:49     ` Takashi Iwai

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