svn commit: r367084 - head/sys/arm64/arm64

[Ruslan Bukin]

Author: br
Date: Tue Oct 27 15:18:10 2020
New Revision: 367084
URL: https://svnweb.freebsd.org/changeset/base/367084

Log:
  Take the ITS device lock around gicv3_its_release_irqsrc() since that
  function checks that the mutex lock is owned.
  
  This fixes 'devctl disable re0' operation.
  
  Sponsored by:	Innovate DSbD
  Differential Revision:	https://reviews.freebsd.org/D26904

Modified:
  head/sys/arm64/arm64/gicv3_its.c

Modified: head/sys/arm64/arm64/gicv3_its.c
==============================================================================
--- head/sys/arm64/arm64/gicv3_its.c	Tue Oct 27 15:10:50 2020	(r367083)
+++ head/sys/arm64/arm64/gicv3_its.c	Tue Oct 27 15:18:10 2020	(r367084)
@@ -1418,7 +1418,9 @@ gicv3_its_release_msix(device_t dev, device_t child, s
 
 	sc = device_get_softc(dev);
 	girq = (struct gicv3_its_irqsrc *)isrc;
+	mtx_lock_spin(&sc->sc_its_dev_lock);
 	gicv3_its_release_irqsrc(sc, girq);
+	mtx_unlock_spin(&sc->sc_its_dev_lock);
 	its_dev->lpis.lpi_busy--;
 
 	if (its_dev->lpis.lpi_busy == 0)