> -----Original Message----- > From: Sarah Sharp [mailto:sarah.a.sharp@xxxxxxxxxxxxxxx] > Sent: Friday, July 22, 2011 12:16 AM > To: Xu, Andiry > Cc: greg@xxxxxxxxx; linux-usb@xxxxxxxxxxxxxxx; > stern@xxxxxxxxxxxxxxxxxxx > Subject: Re: [PATCH] usbcore: get BOS descriptor set > > Hi Andiry, > > Are you getting the BOS descriptor in order to implement link power > management? That was next on my todo list, and I want to make sure I'm > not duplicating your efforts. :) > Yes, the BOS descriptor patch is for LPM. However it's independent so I submitted it separately. Yes, I'm working on LPM now, but only implemented partly, includes testing USB2.0 device software LPM and enable hardware LPM(xHCI 1.0) if the test passed. I've fixed the issue we discussed in the last LPM email and more tests are running now, will submit them next week if everything is OK. For USB3 and USB2 runtime LPM, it's more complicated because driver must decide when to put the link into lower power state. Maybe usbcore needs to give the command, or we can provide interfaces to userspace, such as EHCI does. Maybe you have decided the mechanism? Thanks, Andiry -- 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
