Patch-ID# 106216-03
Keywords: bus lockup L1/a i2c_util fan envctrl
Synopsis: SunOS 5.6: /platform/sun4u/kernel/drv/envctrl patch
Date: Dec/20/99

Solaris Release: 2.6

SunOS Release: 5.6

Unbundled Product: 

Unbundled Release: 

Topic: SunOS 5.6: /platform/sun4u/kernel/drv/envctrl patch

BugId's fixed with this patch: 4058804 4097475 4139830 4257172 

Changes incorporated in this version: 4257172

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

Problem Description:

4257172 envctrl: recursive mutex enter panic during power supply hotswap

(from 106216-02)

4139830 On some Enterprise 450 systems, fans blast every minute.

(from 106216-01)

4058804 i2c: random bus lockup
4097475 L1/a causes hard hang while i2c_util monitor program is running on Ultra-4


Patch Installation Instructions: 
-------------------------------- 
Refer to the Install.info file within the patch for instructions on
using the generic 'installpatch' and 'backoutpatch' scripts provided
with each patch.  Any other special or non-generic installation
instructions should be described below.


Special Install Instructions: 
----------------------------- 
Reboot the system after patch installation.
