Hello, On 08/17/2010 11:28 PM, Stephan Diestelhorst wrote: > 2010/8/17 Tejun Heo <htejun@xxxxxxxxx>: >> On 08/17/2010 12:51 PM, Stephan Diestelhorst wrote: >>> I *think* I have applied the patch correctly. Please find a copy of >>> "git show" in the build directory attached. This should be the right >>> thing, shouldn't it? >> >>> Maybe I forgot to speify a particular debug option / verbosity? >> >>> 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? > > Erm... Honestly, I have no clue. What is IPM? How do I enable it? This is a > Kubuntu Lucid 10.04 distribution, and I have not touched too much. In > particular, the kernels have been from upstream git, just with the Ubuntu config > copied over. > > Maybe it is just not enabled? I am guessing that IPM might be IDE power > management? Or intelligent, integrated? Google turns up this email thread > as one of the first hits and nothing else conclusive. It's interface power management, also called link power management. 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. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
