On Wednesday 29 May 2013 16:32:38 Don Zickus wrote: > On Wed, May 29, 2013 at 12:38:28PM -0700, Sarah Sharp wrote: > > On Tue, May 28, 2013 at 02:41:18PM -0700, Julius Werner wrote: > > > The policy we want to achieve is to disable runtime PM iff there is a > > > device connected that doesn't have persist_enabled or a reset_resume() > > > handler and whose parent/root hub resets on resume, right? > > > > Makes sense. However, not all distros may want that policy, so there > > should be a way to change that policy via sysfs. Some distros may > > choose to take the power savings over having a particular USB device > > work, especially in the server market. > > > > Don, Oliver, what do you think of this patch: > > http://marc.info/?l=linux-usb&m=136941922715772&w=2 > > That is limited only to certain controllers right? RHEL6 doesn't support > runtime suspend, so we don't hear to many complaints. Most of our server > customers don't have much plugged into USB, so I don't expect much > problems there. Our laptop customers prefer the power savings, but I > don't know how many of them have chipsets with XHCI_RESET_ON_RESUME. Power savings are good, but reliability is better. For what it's worth,ior I like the patch. It is a logical extension of the current behavior. Regards Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
