svn commit: r276855 - head/sys/kern

[John Baldwin]

Author: jhb
Date: Thu Jan  8 21:46:28 2015
New Revision: 276855
URL: https://svnweb.freebsd.org/changeset/base/276855

Log:
  Change the default method for device_quiesce() to return 0 instead of
  EOPNOTSUPP.  The current behavior can mask real quiesce errors since
  devclass_quiesce_driver() stops iterating over drivers as soon as it
  gets an error (incluiding EOPNOTSUPP), but the caller it returns the
  error to explicitly ignores EOPNOTSUPP.
  
  Reviewed by:	imp

Modified:
  head/sys/kern/device_if.m

Modified: head/sys/kern/device_if.m
==============================================================================
--- head/sys/kern/device_if.m	Thu Jan  8 21:17:35 2015	(r276854)
+++ head/sys/kern/device_if.m	Thu Jan  8 21:46:28 2015	(r276855)
@@ -60,7 +60,7 @@ CODE {
 
 	static int null_quiesce(device_t dev)
 	{
-	    return EOPNOTSUPP;
+	    return 0;
 	}
 };