Hi Felipe, I see the following warning when g_zero is loaded and USB cable is plugged to host on dra7-evm's USB1 port. It happens only once and no longer appears on re-loading gadget or plugging/unplugging cable. root@rockdesk:~# modprobe g_zero [ 28.414895] zero gadget: Gadget Zero, version: Cinco de Mayo 2008 [ 28.421284] zero gadget: zero ready root@rockdesk:~# [ 35.298997] zero gadget: high-speed config #3: source/sink [ 35.305079] ------------[ cut here ]------------ [ 35.309948] WARNING: CPU: 1 PID: 2269 at drivers/usb/dwc3/gadget.c:697 dwc3_gadget_ep_disable+0xa8/0xc8 [dwc3]() [ 35.320613] dwc3 48890000.usb: ep1in is already disabled [ 35.326174] Modules linked in: usb_f_ss_lb g_zero libcomposite xhci_plat_hcd xhci_hcd usbcore dwc3 m25p80 spi_nor udc_core usb_common c_can_platform c_can spi_ti_qspi can_dev cpufreq_dt omap_wdt extcon_usb_gx [ 35.353787] CPU: 1 PID: 2269 Comm: irq/415-dwc3 Not tainted 4.3.0-rc2-00001-g895eac6 #289 [ 35.362349] Hardware name: Generic DRA74X (Flattened Device Tree) [ 35.368749] [<c0016ed4>] (unwind_backtrace) from [<c00131d4>] (show_stack+0x10/0x14) [ 35.376877] [<c00131d4>] (show_stack) from [<c033c94c>] (dump_stack+0x80/0x9c) [ 35.384459] [<c033c94c>] (dump_stack) from [<c003e684>] (warn_slowpath_common+0x7c/0xb8) [ 35.392952] [<c003e684>] (warn_slowpath_common) from [<c003e754>] (warn_slowpath_fmt+0x30/0x40) [ 35.402088] [<c003e754>] (warn_slowpath_fmt) from [<bf098acc>] (dwc3_gadget_ep_disable+0xa8/0xc8 [dwc3]) [ 35.412080] [<bf098acc>] (dwc3_gadget_ep_disable [dwc3]) from [<bf149ac0>] (disable_ep+0x2c/0x6c [usb_f_ss_lb]) [ 35.422676] [<bf149ac0>] (disable_ep [usb_f_ss_lb]) from [<bf14a6b0>] (disable_endpoints+0x18/0x50 [usb_f_ss_lb]) [ 35.433445] [<bf14a6b0>] (disable_endpoints [usb_f_ss_lb]) from [<bf14a714>] (disable_source_sink+0x2c/0x34 [usb_f_ss_lb]) [ 35.445032] [<bf14a714>] (disable_source_sink [usb_f_ss_lb]) from [<bf14a74c>] (sourcesink_set_alt+0x2c/0x264 [usb_f_ss_lb]) [ 35.456810] [<bf14a74c>] (sourcesink_set_alt [usb_f_ss_lb]) from [<bf131730>] (composite_setup+0xc28/0x1574 [libcomposite]) [ 35.468500] [<bf131730>] (composite_setup [libcomposite]) from [<bf099ac0>] (dwc3_ep0_delegate_req+0x2c/0x40 [dwc3]) [ 35.479559] [<bf099ac0>] (dwc3_ep0_delegate_req [dwc3]) from [<bf09a840>] (dwc3_ep0_interrupt+0x984/0xc40 [dwc3]) [ 35.490353] [<bf09a840>] (dwc3_ep0_interrupt [dwc3]) from [<bf09821c>] (dwc3_thread_interrupt+0x7a8/0x9c8 [dwc3]) [ 35.501195] [<bf09821c>] (dwc3_thread_interrupt [dwc3]) from [<c009c5d8>] (irq_thread_fn+0x1c/0x34) [ 35.510689] [<c009c5d8>] (irq_thread_fn) from [<c009c78c>] (irq_thread+0x148/0x1a4) [ 35.518724] [<c009c78c>] (irq_thread) from [<c005de20>] (kthread+0xd0/0xec) [ 35.526024] [<c005de20>] (kthread) from [<c000f870>] (ret_from_fork+0x14/0x24) [ 35.533593] ---[ end trace fe01e35c4677ca2f ]--- cheers, -roger -- 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
