Hi Tejun,

On Wednesday 18 August 2010, 08:12:24 Tejun Heo wrote:

On 08/17/2010 11:28 PM, Stephan Diestelhorst wrote:

quoted

2010/8/17 Tejun Heo [off-list ref]:

quoted

On 08/17/2010 12:51 PM, Stephan Diestelhorst wrote:

quoted

I've also confirmed that the "XXX ahci_set_ipm" is present in
libahci.ko. So either I've screwed up badly when compiling the initrd,
the code is not executed or the printout does not make it into any
logfile anymore.

Yeah, that's weird.  You're enabling IPM, right?

You can check whether it's enabled by

$ cat /sys/class/scsi_host/host0/link_power_management_policy

If it says max_performance, it's disabled.  If it says anything else,
it's enabled.

It says "max_performance", I have not touched anyhting. So it has been
like that all the time. Would this explain why your patch did not show
the debug printout?

Thanks,
  Stephan
-- 
Stephan Diestelhorst, AMD Operating System Research Center
stephan.diestelhorst@amd.com, Tel. +49 (0)351 448 356 719

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