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From: Emmanuel Vadot <manu@FreeBSD.org>
Date: Sat, 30 Apr 2016 18:07:13 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r298855 - head/sys/arm/allwinner
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Author: manu
Date: Sat Apr 30 18:07:13 2016
New Revision: 298855
URL: https://svnweb.freebsd.org/changeset/base/298855

Log:
  ACK the interrupt after disabling it, this avoid an interrupt storm.
  
  Approved by:	andrew (mentor)

Modified:
  head/sys/arm/allwinner/aw_nmi.c

Modified: head/sys/arm/allwinner/aw_nmi.c
==============================================================================
--- head/sys/arm/allwinner/aw_nmi.c	Sat Apr 30 17:27:33 2016	(r298854)
+++ head/sys/arm/allwinner/aw_nmi.c	Sat Apr 30 18:07:13 2016	(r298855)
@@ -277,8 +277,11 @@ aw_nmi_teardown_intr(device_t dev, struc
 static void
 aw_nmi_pre_ithread(device_t dev, struct intr_irqsrc *isrc)
 {
+	struct aw_nmi_softc *sc;
 
+	sc = device_get_softc(dev);
 	aw_nmi_disable_intr(dev, isrc);
+	SC_NMI_WRITE(sc, NMI_IRQ_PENDING_REG, NMI_IRQ_ACK);
 }
 
 static void