Author: gonzo
Date: Tue Aug 30 01:31:03 2016
New Revision: 305039
URL: https://svnweb.freebsd.org/changeset/base/305039
Log:
Fix TI PRUSS driver panic with INVARIANTS enabled
Value passed as islocked argument to knlist_add should
be consistent with actual lock state so add lock/unlock
calls around knlist_add
PR: 212120
Submitted by: Manuel Stuhn
Modified:
head/sys/arm/ti/ti_pruss.c
Modified: head/sys/arm/ti/ti_pruss.c
==============================================================================
--- head/sys/arm/ti/ti_pruss.c Tue Aug 30 01:01:41 2016 (r305038)
+++ head/sys/arm/ti/ti_pruss.c Tue Aug 30 01:31:03 2016 (r305039)
@@ -310,7 +310,9 @@ ti_pruss_kqfilter(struct cdev *cdev, str
case EVFILT_READ:
kn->kn_hook = sc;
kn->kn_fop = &ti_pruss_kq_read;
+ mtx_lock(&sc->sc_mtx);
knlist_add(&sc->sc_selinfo.si_note, kn, 1);
+ mtx_unlock(&sc->sc_mtx);
break;
default:
return (EINVAL);
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