Author: sephe
Date: Mon May 30 09:44:17 2016
New Revision: 300994
URL: https://svnweb.freebsd.org/changeset/base/300994

Log:
  hyperv/et: Allow Hyper-V event timer be disabled
  
  MFC after:    1 week
  Sponsored by: Microsoft OSTC
  Differential Revision:        https://reviews.freebsd.org/D6599

Modified:
  head/sys/dev/hyperv/vmbus/hv_et.c

Modified: head/sys/dev/hyperv/vmbus/hv_et.c
==============================================================================
--- head/sys/dev/hyperv/vmbus/hv_et.c   Mon May 30 09:35:36 2016        
(r300993)
+++ head/sys/dev/hyperv/vmbus/hv_et.c   Mon May 30 09:44:17 2016        
(r300994)
@@ -113,6 +113,9 @@ vmbus_et_identify(driver_t *driver, devi
 static int
 vmbus_et_probe(device_t dev)
 {
+       if (resource_disabled(VMBUS_ET_NAME, 0))
+               return (ENXIO);
+
        device_set_desc(dev, "Hyper-V event timer");
 
        return (BUS_PROBE_NOWILDCARD);
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