Author: mav
Date: Thu Oct 29 00:30:38 2020
New Revision: 367124
URL: https://svnweb.freebsd.org/changeset/base/367124
Log:
MFC r366733: Drop unsolicited responses to the still attaching CODECs.
It is reported to fix kernel panics when early unsolicited responses
delivered to the CODEC device not having driver attached yet.
PR: 250248
Modified:
stable/12/sys/dev/sound/pci/hda/hdac.c
Directory Properties:
stable/12/ (props changed)
Modified: stable/12/sys/dev/sound/pci/hda/hdac.c
==============================================================================
--- stable/12/sys/dev/sound/pci/hda/hdac.c Thu Oct 29 00:23:16 2020
(r367123)
+++ stable/12/sys/dev/sound/pci/hda/hdac.c Thu Oct 29 00:30:38 2020
(r367124)
@@ -1001,7 +1001,8 @@ hdac_unsolq_flush(struct hdac_softc *sc)
sc->unsolq_rp %= HDAC_UNSOLQ_MAX;
cad = sc->unsolq[sc->unsolq_rp++];
sc->unsolq_rp %= HDAC_UNSOLQ_MAX;
- if ((child = sc->codecs[cad].dev) != NULL)
+ if ((child = sc->codecs[cad].dev) != NULL &&
+ device_is_attached(child))
HDAC_UNSOL_INTR(child, resp);
ret++;
}
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