On Wed, 30 Dec 2009, Crane Cai wrote: > Hi Alan, > > Sorry to disturb. One question related to it: > On Tue, Dec 29, 2009 at 10:55:00AM -0500, Alan Stern wrote: > > The way I see it, keeping URBs alive while doing a bus suspend just > > adds unnecessary complexity without providing any comparable benefit. > The actual source clip in function usb_suspend_both show: now first > usb_suspend_device do, then usb_hcd_flush_endpoint. Actually these URB are > running between them, and indeed if usb_suspend_device return OK, the port is > closed, who insure these URB work well? They probably _don't_ work. That was part of the point I was making. Alan Stern -- 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