On Sun, Jun 07, 2009 at 04:41:30PM +0100, Alan Jenkins wrote: > Hmm, some cameras have input devices (i.e. buttons). In fact, uvcvideo > registers an input device on my EEE even though it has no buttons. I > think that needs investigating :-(. > > It's quite likely that the buttons can stop working when suspended. > And there might be other devices with the same IDs, which have a > button wired up. A change has recently been committed that results in the button only working if the v4l device is open. Otherwise you've got several wakeups a second due to the polling of the button endpoint. I'm assuming that opening the device disables autosuspend, so I wouldn't worry about that. It'd be interesting to try enabling autosuspend on all UVC devices. Can a driver indicate that its hardware supports it? -- Matthew Garrett | mjg59@xxxxxxxxxxxxx -- 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
