Bug 7438 - tg3 re-confuration fails
Summary: tg3 re-confuration fails
Status: RESOLVED CODE_FIX
Alias: None
Product: Drivers
Classification: Unclassified
Component: Network (show other bugs)
Hardware: i386 Linux
: P2 normal
Assignee: Michael Chan
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2006-10-31 07:20 UTC by Manfred Wimmer
Modified: 2006-11-02 13:11 UTC (History)
0 users

See Also:
Kernel Version: > 2.6.16
Subsystem:
Regression: ---
Bisected commit-id:

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Description Manfred Wimmer 2006-10-31 07:20:57 UTC 
Most recent kernel where this bug did not occur: 2.6.16
Distribution: Debian / sid, unstable
Hardware Environment: Thinkpad Z61p
Software Environment: 
Problem Description: network configuration only succeeds the first time. affer
an ifdown/ifup the network doesnt work anymore, without any messages in dmesg or
log files

Steps to reproduce:
ifdown/ifup eth0 (or equivalent)
Comment 1 Michael Chan 2006-10-31 12:52:14 UTC 
After 1st ifup when the device is working, run ethtool -t eth0 to test the 
device.  After ifdown and 2nd ifup, run ethtool -t eth0 again.  Compare and 
post the test results.
Comment 2 Michael Chan 2006-11-02 12:03:24 UTC 
The problem is caused by tg3_close() turning off the PHY.  On the next ifup, 
some of the register initializations take no effect because the PHY clock isn't 
available.  The following patch should fix this issue by performing a PHY reset 
early in the sequence.

http://marc.theaimsgroup.com/?l=linux-netdev&m=116249817612181&w=2
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