Ping! On Mon, Jul 07, 2014 at 12:53:45PM +0200, Michael Grzeschik wrote: > I am currently working with an udc where the userspace should react on plugging > and unplugging of the device. The layers used trigger the usb_gadget_state_work > as expected, but the sysfs_notify never cross the userspace layer. > > > static void usb_gadget_state_work(struct work_struct *work) > { > struct usb_gadget *gadget = work_to_gadget(work); > > sysfs_notify(&gadget->dev.kobj, NULL, "state"); > } > > When I create my own device attribute and call this function on it, everything > works fine and my test application reacts on the event. > > I thing we mess with an regression where the attribute is not found in > sysfs_notify. I see that kernfs_find_and_get is returning NULL and therefor > never call kernfs_notify. > > Does anybody know what could be the matter here? -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | -- 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