Patch-ID# 108224-01
Keywords: envctrl mutex panic
Synopsis: SunOS 5.7: envctrl driver patch
Date: Oct/22/99

Solaris Release: 7

SunOS Release: 5.7

Unbundled Product: 

Unbundled Release: 

Topic: SunOS 5.7: envctrl driver patch

	**********************************************************************
	NOTE: This patch may contain one or more OEM-specific platform ports.
	      See the appropriate OEM_NOTES file within the patch for
              information specific to these platforms.
 
              DO NOT INSTALL this patch on an OEM system if a corresponding
              OEM_NOTES file is not present (or is present, but instructs not
              to install the patch), unless the OEM vendor directs otherwise.
	**********************************************************************

BugId's fixed with this patch: 4257172 

Changes incorporated in this version: 

Relevant Architectures: sparc

Patches accumulated and obsoleted by this patch:  

Patches which conflict with this patch: 

Patches required with this patch: 

Obsoleted by: 

Files included with this patch:

/platform/sun4u/kernel/drv/envctrl
/platform/sun4u/kernel/drv/sparcv9/envctrl

Problem Description:

4257172 envctrl: recursive mutex enter panic during power supply hotswap


Patch Installation Instructions:
--------------------------------
For Solaris 2.0-2.6 releases, refer to the Install.info file and/or
the README within the patch for instructions on using the generic
'installpatch' and 'backoutpatch' scripts provided with each patch.

For Solaris 7 release, refer to the man pages for instructions on
using 'patchadd' and 'patchrm' scripts provided with Solaris.
Any other special or non-generic installation instructions should be
described below as special instructions.  The following example
installs a patch to a standalone machine:

       example# patchadd /var/spool/patch/104945-02

The following example removes a patch from a standalone system:

       example# patchrm 104945-02

For additional examples please see the appropriate man pages.


Special Install Instructions: 
----------------------------- 
None.