Hi, Marek Vasut writes: > This driver handles claiming of clocks and memory areas. These are later > properly delegated to it's child devices, the USB Host (ehci-mxs) and > USB Gadget (ci13xxx-mxs). > [...] There is a conceptual bug in the following code. Did you ever run it? > + INIT_WORK(&priv->work, imx_otg_work); > + [...] > + if (pdata->gadget_mode) { > + data->pdev_gadget = add_platform_device("ci13xxx-mxs", -1, > + data, sizeof(*data), > + DMA_BIT_MASK(32)); This will blow up due to 'BUG_ON(!list_empty(&work->entry));' in kernel/workqueue.c when schedule_work() is called in imx_otg_set_host() or imx_otg_set_peripheral(). platform_add_data() (called from add_platform_device()) will make a copy of the data structure which contains the initialized work queue. INIT_WORK() will have initialized a list_head embedded in the work queue (making 'next' and 'prev' member pointing to the list_head itself). The copied list_head will thus have its members pointing to the original data structure rather than the respective copies and thus fail the 'list_empty()' check. Lothar Waßmann -- ___________________________________________________________ Ka-Ro electronics GmbH | Pascalstraße 22 | D - 52076 Aachen Phone: +49 2408 1402-0 | Fax: +49 2408 1402-10 Geschäftsführer: Matthias Kaussen Handelsregistereintrag: Amtsgericht Aachen, HRB 4996 www.karo-electronics.de | info@xxxxxxxxxxxxxxxxxxx ___________________________________________________________ -- 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