Please instruct your email client to wrap lines after 72 columns or so. Long lines are hard to deal with. On Wed, 5 May 2010, Rob Duncan wrote: > On May 5, 2010, at 9:00 AM, Alan Stern wrote: > > > You will have to do some debugging to find out why your driver isn't > > getting suspended. A good place to start is in > > drivers/usb/core/driver.c:autosuspend_check(). > > I may be doing something stupid, but I'm not seeing > autosuspend_check() being called for my device. In fact, it looks > like it is only being called for the controller devices. I'm going > to add more debug printing in likely looking places. Any additional > suggestions gratefully accepted! The most likely reason for autosuspend_check() not getting called is that either the device or one of its interfaces has a nonzero usage_count. The central place where you will get the most information (perhaps a little too much!) is in drivers/base/power/runtime.c. Try to trace what's happening in __pm_runtime_idle() and __pm_runtime_suspend(). 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
