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authorTakashi Iwai <tiwai@suse.de>2021-03-10 12:28:08 +0100
committerTakashi Iwai <tiwai@suse.de>2021-03-10 12:51:49 +0100
commit5ff9dde42e8c72ed8102eb8cb62e03f9dc2103ab (patch)
tree451a4f338bb74e31b80429e171ceabe832249b02 /sound/pci
parent13661fc48461282e43fe8f76bf5bf449b3d40687 (diff)
downloadlinux-5ff9dde42e8c72ed8102eb8cb62e03f9dc2103ab.tar.gz
ALSA: hda: Avoid spurious unsol event handling during S3/S4
When HD-audio bus receives unsolicited events during its system suspend/resume (S3 and S4) phase, the controller driver may still try to process events although the codec chips are already (or yet) powered down. This might screw up the codec communication, resulting in CORB/RIRB errors. Such events should be rather skipped, as the codec chip status such as the jack status will be fully refreshed at the system resume time. Since we're tracking the system suspend/resume state in codec power.power_state field, let's add the check in the common unsol event handler entry point to filter out such events. BugLink: https://bugzilla.suse.com/show_bug.cgi?id=1182377 Tested-by: Abhishek Sahu <abhsahu@nvidia.com> Cc: <stable@vger.kernel.org> # 183ab39eb0ea: ALSA: hda: Initialize power_state Link: https://lore.kernel.org/r/20210310112809.9215-3-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
-rw-r--r--sound/pci/hda/hda_bind.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_bind.c b/sound/pci/hda/hda_bind.c
index 6a8564566375..17a25e453f60 100644
--- a/sound/pci/hda/hda_bind.c
+++ b/sound/pci/hda/hda_bind.c
@@ -47,6 +47,10 @@ static void hda_codec_unsol_event(struct hdac_device *dev, unsigned int ev)
if (codec->bus->shutdown)
return;
+ /* ignore unsol events during system suspend/resume */
+ if (codec->core.dev.power.power_state.event != PM_EVENT_ON)
+ return;
+
if (codec->patch_ops.unsol_event)
codec->patch_ops.unsol_event(codec, ev);
}