RE: tg3 access hangs on system shutdown with 2.6.11-rc5, tg3_stop_block timed out

["Michael Chan" <mchan@xxxxxxxxxxxx>]

> 
> my JS20 blades hang on system reboot with current Linus tree. 
> I think it started after rc3. Maybe this line in dmesg gives a hint:
> 
> tg3: tg3_stop_block timed out, ofs=4000 enable_bit=2
> 

Olaf,

This error message means that the memory arbiter cannot be disabled for some
reason. Looking at the code, tg3_abort_hw() will return -ENODEV and skip the
2 memset calls to zero out the hw_status and hw_stats memory. I don't believe
skipping the memset calls can cause a hang. After tg3_abort_hw(), the chip
should then be reset to a known state.

The 5704S changes in 2.6.11-rc4 are mainly related to serdes link-up and tx
signal. I don't see how those changes can cause a hang or the tg3_stop_block
error. The stack trace did not show any tg3 function calls. Can you narrow it
down further to a specific patch that is causing the problem?

Michael