Kristen Carlson Accardi wrote: >>>>> I'm not sure about this. We need better PM framework to support >>>>> powersaving in other controllers and some ahcis don't save much >>>>> when only link power management is used, >>>> do you have data to support this? >>> Yeah, it was some Lenovo notebook. Pavel is more familiar with the >>> hardware. Pavel, what was the notebook which didn't save much power >>> with standard SATA power save but needed port to be completely turned off? >> Thinkpad x60. Some one Kristen probably used while developing the >> patch :-). > > Yes - that confirms my conclusion that the first patch just wasn't > done correctly - cause when I measure the power savings with a power > meter on the X60 with my patches I see ~ 1W. Hmmm... Could it be that the controller doesn't enter powersave state when SControl is written to? -- 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
